MFS GOVERNMENT LIMITED MATURITY FUND /MA/
485BPOS, 1998-04-29
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<PAGE>

   
     As filed with the Securities and Exchange Commission on April 29, 1998
    

                                                      1933 Act File No. 2-96738
                                                      1940 Act File No. 811-4253

================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                              ---------------------

   
                                    FORM N-1A
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933
                         POST-EFFECTIVE AMENDMENT NO. 19
    

                                       AND

   
                          REGISTRATION STATEMENT UNDER
                       THE INVESTMENT COMPANY ACT OF 1940
                                AMENDMENT NO. 20
    

                      MFS GOVERNMENT LIMITED MATURITY FUND
               (Exact Name of Registrant as Specified in Charter)

                500 Boylston Street, Boston, Massachusetts 02116
                    (Address of Principal Executive Offices)

        Registrant's Telephone Number, Including Area Code: 617-954-5000
           Stephen E. Cavan, Massachusetts Financial Services Company
                500 Boylston Street, Boston, Massachusetts 02116
                     (Name and Address of Agent for Service)

                  APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
  It is proposed that this filing will become effective (check appropriate box)

   
|_| immediately upon filing pursuant to paragraph (b)
|X| on April 30, 1998 pursuant to paragraph (b)
|_| 60 days after filing pursuant to paragraph (a)(i)
|_| on [date] pursuant to paragraph (a)(i)
|_| 75 days after filing pursuant to paragraph (a)(ii)
|_| on [date] pursuant to paragraph (a)(ii) of rule 485.
    

If appropriate, check the following box:
|_| this post-effective amendment designates a new effective date for a
    previously filed post-effective amendment

================================================================================
<PAGE>

                      MFS GOVERNMENT LIMITED MATURITY FUND

                              Cross Reference Sheet

(Pursuant to Rule 404 showing location in Prospectus and/or Statement of
Additional Information of the responses to the Items in Parts A and B of Form
N-1A).

<TABLE>
<CAPTION>
     ITEM NUMBER                                                           STATEMENT OF ADDITIONAL
FORM N-1A, PART A                   PROSPECTUS CAPTION                        INFORMATION CAPTION
<C>                        <S>                                             <C> 

   1  (a), (b)             Front Cover Page                                           *

   2  (a)                  Expense Summary                                            *

      (b), (c)                                *                                       *

   3  (a)                  Condensed Financial Information                            *

      (b)                                     *                                       *

      (c)                  Information Concerning Shares of                           *
                             the Fund - Performance Information

      (d)                  Condensed Financial Information                            *

   4  (a)                  The Fund; Investment Objective                             *
                             and Policies

      (b), (c)             Investment Objective and Policies                          *

   5  (a)                  The Fund; Management of the                                *
                             Fund - Investment Adviser

      (b)                  Front Cover Page; Management of                            *
                             the Fund - Investment Adviser;
                             Back Cover Page

      (c)                  Management of the Fund -                                   *
                             Investment Adviser

      (d)                  Management of the Fund -                                   *
                             Administrator

      (e)                  Management of the Fund -                                   *
                             Shareholder Servicing Agent;
                             Back Cover Page

      (f)                  Expense Summary; Condensed                                 *
                             Financial Information

      (g)                  Information Concerning Shares                              *
                             of the Fund - Purchases

      (h)                                     *                                       *

   5A (a),(b),(c)                           **                                        **

   6  (a)                  Information Concerning Shares                              *
                             of the Fund - Description of
                             Shares, Voting Rights and
                             Liabilities; Information Concerning
                             Shares of the Fund - Redemptions
                             and Repurchases; Information
                             Concerning Shares of the Fund -
                             Purchases; Information Concerning
                             Shares of the Fund - Exchanges

      (b), (c), (d)                           *                                       *

      (e)                  Shareholder Services                                       *

      (f)                  Information Concerning Shares                              *
                             of the Fund - Distributions;
                             Shareholder Services - Distribution
                             Options

      (g)                  Information Concerning Shares                              *
                             of the Fund - Tax Status;
                             Information Concerning Shares
                             of the Fund - Distributions

      (h)                                     *                                       *

   7  (a)                  Front Cover Page; Management                               *
                             of the Fund - Distributor;
                             Back Cover Page

      (b)                  Information Concerning Shares                              *
                             of the Fund - Purchases; Net
                             Asset Value

      (c)                  Information Concerning Shares                              *
                             of the Fund - Purchases;
                             Information Concerning Shares
                             of the Fund - Exchanges;
                             Shareholder Services

      (d)                  Front Cover Page; Information                              *
                             Concerning Shares of the Fund -
                             Purchases

      (e)                  Information Concerning Shares                              *
                             of the Fund - Distribution Plan;
                             Expense Summary

      (f)                  Information Concerning Shares                              *
                             of the Fund - Distribution Plan

      (g)                  Expense Summary; Information                               *
                             Concerning Shares of the Fund -
                             Purchases; Information Concerning
                             Shares of the Fund - Exchanges;
                             Information Concerning Shares of
                             the Fund - Redemptions and
                             Repurchases; Information Concerning
                             Shares of the Fund - Distribution Plan;
                             Information Concerning Shares of the
                             Fund - Distributions; Information
                             Concerning Shares of the Fund -
                             Performance Information; Shareholder
                             Services

  8   (a)                  Information Concerning Shares                              *
                             of the Fund - Redemptions and
                             Repurchases; Information
                             Concerning Shares of the Fund -
                             Purchases

      (b), (c), (d)        Information Concerning Shares                              *
                             of the Fund - Redemptions and
                             Repurchases

  9                                        *                                          *

</TABLE>

<PAGE>

<TABLE>
<CAPTION>
   ITEM NUMBER                                                             STATEMENT OF ADDITIONAL
FORM N-1A, PART B                   PROSPECTUS CAPTION                       INFORMATION CAPTION
<C>                                 <C>                                    <S>
  10  (a), (b)                             *                               Front Cover Page

  11                                       *                               Front Cover Page

  12                                       *                               Definitions

  13  (a), (b), (c)                        *                               Investment Objective,
                                                                             Policies and Restrictions

      (d)                                  *                                          *

  14  (a), (b)                             *                               Management of the Fund -
                                                                             Trustees and Officers

      (c)                                  *                               Management of the Fund -
                                                                             Trustees and Officers;
                                                                             Trustee Compensation Table

  15  (a)                                  *                                          *

      (b), (c)                             *                               Management of the Fund -
                                                                             Trustees and Officers

  16  (a)                  Management of the Fund -                        Management of the Fund -
                             Investment Adviser                              Investment Adviser;
                                                                             Management of the Fund -
                                                                             Trustees and Officers

      (b)                  Management of the Fund -                        Management of the Fund -
                             Investment Adviser                              Investment Adviser

      (c)                                  *                                          *

      (d)                                  *                               Management of the Fund -
                                                                             Investment Adviser; Administrator

      (e)                                  *                               Portfolio Transactions and
                                                                             Brokerage Commissions

      (f)                  Information Concerning                          Distribution Plan
                             Shares of the Fund -
                             Distribution Plan

      (g)                                  *                                          *

      (h)                                  *                               Management of the Fund -
                                                                             Custodian; Independent
                                                                             Auditors and Financial
                                                                             Statements; Back Cover
                                                                             Page

      (i)                                  *                               Management of Fund -
                                                                             Shareholder Servicing
                                                                             Agent

  17  (a), (b), (c),                       *                               Portfolio Transactions and
      (d), (e)                                                               Brokerage Commissions

  18  (a)                  Information Concerning                          Description of Shares
                             Shares of the Fund -                            Voting Rights and
                             Description of Shares,                          Liabilities
                             Voting Rights and
                             Liabilities

      (b)                                  *                                          *

  19  (a)                  Information Concerning                          Shareholder Services
                             Shares of the Fund - Purchases;
                             Shareholder Services

      (b)                  Information Concerning                          Management of the Fund -
                             Shares of the Fund - Net                        Distributor; Determination of
                             Asset Value; Information                        Net Asset Value and Performance -
                             Concerning Shares of the                        Net Asset Value
                             Fund - Purchases

      (c)                                  *                                          *

  20                                       *                               Tax Status

  21  (a), (b)                             *                               Management of the Fund -
                                                                             Distributor; Distribution Plan

      (c)                                  *                                          *

  22  (a)                                  *                                          *

      (b)                                  *                               Determination of Net Asset
                                                                             Value and Performance; Performance
                                                                             Information

  23                                       *                               Independent Auditors
                                                                             and Financial Statements
- --------------------
 * Not Applicable
** Contained in Annual Report
</TABLE>
<PAGE>

                      MFS GOVERNMENT LIMITED MATURITY FUND

SUPPLEMENT TO THE MAY 1, 1998 PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION

     THE FOLLOWING INFORMATION SHOULD BE READ IN CONJUNCTION WITH THE FUND'S
PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION ("SAI"), DATED MAY 1, 1998,
AND CONTAINS A DESCRIPTION OF CLASS I SHARES.

     CLASS I SHARES ARE AVAILABLE FOR PURCHASE ONLY BY CERTAIN INVESTORS AS
DESCRIBED UNDER THE CAPTION "ELIGIBLE PURCHASERS" BELOW.

EXPENSE SUMMARY

SHAREHOLDER TRANSACTION EXPENSES:                                        CLASS I
                                                                         -------
   Maximum Initial Sales Charge Imposed on Purchases of Fund
     Shares (as a percentage of offering price)........................  None
   Maximum Contingent Deferred Sales Charge (as a percentage
     of original purchase price or redemption proceeds, as applicable).  None

ANNUAL OPERATING EXPENSES OF THE FUND (AS A PERCENTAGE OF AVERAGE NET ASSETS):
   Management Fees.....................................................  0.40%
   Rule 12b-1 Fees.....................................................  None
   Other Expenses(1)...................................................  0.27%
                                                                         -----
   Total Operating Expenses............................................  0.67%

- ----------
(1)  The Fund has an expense offset arrangement which reduces the Fund's
     custodian fee based upon the amount of cash maintained by the Fund with its
     custodian and dividend disbursing agent, and may enter into other such
     arrangements and directed brokerage arrangements (which would also have the
     effect of reducing the Fund's expenses). Any such fee reductions are not
     reflected under "Other Expenses."

                               EXAMPLE OF EXPENSES

     An investor would pay the following dollar amounts of expenses on a $1,000
investment in Class I shares of the Fund, assuming (a) a 5% annual return and
(b) redemption at the end of each of the time periods indicated:

         PERIOD                                               CLASS I

         1 year........................................          $ 7
         3 years.......................................           21
         5 years.......................................           37
         10 years......................................           83

     The purpose of the expense table above is to assist investors in
understanding the various costs and expenses that a shareholder of the Fund will
bear directly or indirectly. A more complete description of the Fund's
management fee is set forth under the caption "Management of the Fund" in the
Prospectus.

THE "EXAMPLE" SET FORTH ABOVE SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST
OR FUTURE EXPENSES OF THE FUND; ACTUAL EXPENSES MAY BE GREATER OR LESS THAN
THOSE SHOWN.
<PAGE>

FINANCIAL HIGHLIGHTS - CLASS I SHARES
                                                             PERIOD ENDED
                                                             DECEMBER 31, 1997*
                                                             ------------------

Per share data (for a share outstanding throughout the period):
Net asset value - beginning of period                        $ 8.40
                                                             ------

Income from investment operations# -
     Net investment income                                   $ 0.53
     Net realized and unrealized gain on investments
                                                                --

         Total from investment operations                    $ 0.53
                                                             -------

Less distributions declared to shareholders
     from net investment income                              $(0.53)

     Net asset value - end of period                         $ 8.40
                                                             -------

Total return                                                   6.55%++
Ratios (to average net assets)/
     Supplemental data:
     Expenses##                                                0.69%+
     Net investment income                                     6.42%+
Portfolio turnover                                               266%
Net assets at end of period (000 omitted)                    $  182

- ---------
 * For the period from the inception of Class I shares, January 2, 1997 through
   December 31, 1997.
 + Annualized
++ Not annualized
 # Per share data are based on average shares outstanding.
## The Fund's expenses are calculated without reduction for fees paid
   indirectly.

ELIGIBLE PURCHASERS

Class I shares are available for purchase only by the following purchasers
("Eligible Purchasers"):

(i)  certain retirement plans established for the benefit of employees of
     Massachusetts Financial Services Company ("MFS"), the Fund's investment
     adviser, and employees of MFS' affiliates; and

(ii) any fund distributed by MFS Fund Distributors, Inc. ("MFD"), the Fund's
     distributor, if the fund seeks to achieve its investment objective by
     investing primarily in shares of the Fund and other funds distributed by
     MFD.

In no event will the Fund, MFS, MFD or any of their affiliates pay any sales
commissions or compensation to any third party in connection with the sale of
Class I shares; the payment of any such sales commission or compensation would,
under the Fund's policies, disqualify the purchaser as an eligible investor of
Class I shares.

SHARE CLASSES OFFERED BY THE FUND

     Four classes of shares of the Fund currently are offered for sale, Class A
shares, Class B shares, Class C shares and Class I shares. Class I shares are
available for purchase only by Eligible Purchasers, as defined above, and are
described in this Supplement. Class A shares, Class B shares and Class C shares
are described in the Fund's Prospectus and are available for purchase by the
general public.

     Class A shares are offered at net asset value plus an initial sales charge
up to a maximum of 2.50% of the offering price (or a contingent deferred sales
charge (a "CDSC") upon redemption of 1.00% during the first year in the case of
purchases of $1 million or more and certain purchases by retirement plans), and
are subject to an annual distribution fee and service fee up to a maximum of
0.35% per annum. Class B shares are offered at net asset value without an
initial sales charge but are subject to a CDSC upon redemption (declining from
4.00% during the first year to 0% after six years) and an annual distribution
fee and service fee up to a maximum of 1.00% per annum; Class B shares convert
to Class A shares approximately eight years after purchase. Class C shares are
offered at net asset value without an initial sales charge but are subject to a
CDSC upon redemption of 1.00% during the first year and an annual distribution
fee and service fee up to a maximum of 1.00% per annum. Class I shares are
offered at net asset value without an initial sales charge or CDSC and are not
subject to a distribution or service fee. Class C and Class I shares do not
convert to any other class of shares of the Fund.

OTHER INFORMATION

     Eligible Purchasers may purchase Class I shares only directly through MFD.
Eligible Purchasers may exchange Class I shares of the Fund for Class I shares
of any other MFS Fund available for purchase by such Eligible Purchasers at
their net asset value (if available for sale), and may exchange Class I shares
of the Fund for shares of the MFS Money Market Fund (if available for sale), and
may redeem Class I shares of the Fund at net asset value. Distributions paid by
the Fund with respect to Class I shares generally will be greater than those
paid with respect to Class A shares, Class B shares and Class C shares because
expenses attributable to Class A shares, Class B shares and Class C shares
generally will be higher.

                   THE DATE OF THIS SUPPLEMENT IS MAY 1, 1998.
<PAGE>

MFS(R) GOVERNMENT LIMITED MATURITY FUND
MAY 1, 1998

   
                                                                    PROSPECTUS

                                       CLASS A SHARES OF BENEFICIAL INTEREST
                                       CLASS B SHARES OF BENEFICIAL INTEREST
                                       CLASS C SHARES OF BENEFICIAL INTEREST
    
- --------------------------------------------------------------------------------

The investment objective of MFS Government Limited Maturity Fund (the "Fund")
is to preserve capital and provide high current income (compared to a
portfolio entirely invested in money market instruments). The Fund will seek
to achieve this objective by investing in obligations issued or guaranteed by
the U.S. Government, its agencies, authorities or instrumentalities. Under
normal market conditions, substantially all of the securities in the Fund's
portfolio will have remaining maturities of five years or less. See
"Investment Objective and Policies." The minimum initial investment generally
is $1,000 per account (see "Information Concerning Shares of the Fund --
Purchases").

The Fund's investment adviser and distributor are Massachusetts Financial
Services Company ("MFS" or the "Adviser") and MFS Fund Distributors, Inc.
("MFD"), respectively, both of which are located at 500 Boylston Street,
Boston, Massachusetts 02116.

   
INVESTMENT PRODUCTS ARE NOT INSURED BY THE FDIC OR ANY OTHER GOVERNMENT
AGENCY, AND ARE NOT DEPOSITS OR OTHER OBLIGATIONS OF, OR GUARANTEED BY, ANY
FINANCIAL INSTITUTION. SHARES OF MUTUAL FUNDS ARE SUBJECT TO INVESTMENT RISK,
INCLUDING POSSIBLE LOSS OF THE PRINCIPAL AMOUNT INVESTED, AND WILL FLUCTUATE
IN VALUE. YOU MAY RECEIVE MORE OR LESS THAN YOU PAID WHEN YOU REDEEM YOUR
SHARES.

This Prospectus sets forth concisely the information concerning the Fund that a
prospective investor ought to know before investing. The Fund has filed with the
Securities and Exchange Commission (the "SEC") a Statement of Additional
Information dated May 1, 1998, as amended or supplemented from time to time (the
"SAI"), which contains more detailed information about the Fund. The SAI is
incorporated into this Prospectus by reference. See page 35 for a further
description of the information set forth in the SAI. A copy of the SAI may be
obtained without charge by contacting the Shareholder Servicing Agent (see back
cover for address and phone number). The SEC maintains an Internet World Wide
Web site (http://www.sec.gov) that contains the SAI, materials that are
incorporated by reference into this Prospectus and the SAI, and other
information regarding the Fund. This Prospectus is available on the Adviser's
Internet World Wide Web site at http://www.mfs.com.
    

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

    INVESTORS SHOULD READ THIS PROSPECTUS AND RETAIN IT FOR FUTURE REFERENCE.

                                       1
<PAGE>
TABLE OF CONTENTS
                                                            Page
   
1. Expense Summary .....................................       3
2. Condensed Financial Information .....................       5
3. The Fund ............................................       9
4. Investment Objective and Policies ...................       9
5. Management of the Fund ..............................      13
6. Information Concerning Shares of the Fund ...........      15
      Purchases ........................................      15
      Exchanges ........................................      22
      Redemptions and Repurchases ......................      23
      Distribution Plan ................................      27
      Distributions ....................................      29
      Tax Status .......................................      30
      Net Asset Value ..................................      31
      Description of Shares, Voting Rights and
      Liabilities ......................................      31
      Performance Information ..........................      32
7. Shareholder Services ................................      33
   Appendix A ..........................................     A-1
   Appendix B ..........................................     B-1
    

<PAGE>


1.  EXPENSE SUMMARY

   
SHAREHOLDER TRANSACTION EXPENSES:                  CLASS A    CLASS B    CLASS C
                                                   -------    -------    -------
    Maximum Initial Sales Charge Imposed on
      Purchases of Fund Shares (as a
      percentage of public offering price) ..      2.50%      0.00%      0.00%
    Maximum Contingent Deferred Sales Charge
      (as a percentage of original purchase
      price or redemption proceeds, as       
      applicable) ...........................   See Below(1)  4.00%      1.00%

ANNUAL OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS):
    Management Fees .........................   0.40%      0.40%      0.40%
    Rule 12b-1 Fees .........................   0.15%(2)   0.94%(3)   1.00%(3)
    Other Expenses(4) .......................   0.27%      0.27%      0.27%
                                                ----       ----       ----
    Total Operating Expenses ................   0.82%      1.61%      1.67%
    

- ------------
(1) Purchases of $1 million or more and certain purchases by retirement plans
    are not subject to an initial sales charge; however, a contingent deferred
    sales charge (a "CDSC") of 1% will be imposed on such purchases in the event
    of certain redemption transactions within 12 months following such purchases
    (see "Information Concerning Shares of the Fund -- Purchases" below).

(2) The Fund has adopted a distribution plan for its shares in accordance with
    Rule 12b-1 under the Investment Company Act of 1940, as amended (the "1940
    Act") (the "Distribution Plan"), which provides that it will pay
    distribution/service fees aggregating up to (but not necessarily all of)
    0.35% per annum of the average daily net assets attributable to Class A
    shares. Payment of the 0.10% per annum Class A distribution fee will
    commence on such date as the Trustees of the Trust may determine. Service
    fee payments in the amount of 0.15% of the average daily net assets of the
    Fund attributable to Class A shares are currently being paid by the Fund.
    Payment of the remaining portion of the service fee will commence on such
    date as the Trustees of the Trust may determine. Distribution expenses
    paid under this Plan, together with the initial sales charge, may cause
    long-term shareholders to pay more than the maximum sales charge that
    would have been permissible if imposed entirely as an initial sales
    charge. (see "Information Concerning Shares of the Fund -- Distribution
    Plan" below).
(3) The Fund's Distribution Plan provides that it will pay distribution/
    service fees aggregating up to (but not necessarily all of) 1.00% per
    annum of the average daily net assets attributable to Class B and Class C
    shares, respectively. Except in the case of the first year service fee,
    the Class B service fee is currently set at 0.15% per annum and may be
    increased to a maximum of 0.25% per annum on such date as the Trustees of
    the Trust may determine. Distribution expenses paid under the Distribution
    Plan, together with any CDSC payable upon redemption of Class B and Class
    C shares, may cause long-term shareholders to pay more than the maximum
    sales charge that would have been permissible if imposed entirely as an
    initial sales charge (see "Information Concerning Shares of the Fund --
    Distribution Plan" below).
(4) The Fund has an expense offset arrangement which reduces the Fund's
    custodian fee based upon the amount of cash maintained by the Fund with
    its custodian and dividend disbursing agent, and may enter into other such
    arrangements and directed brokerage arrangements (which would also have
    the effect of reducing the Fund's expenses). Any such fee reductions are
    not reflected under "Other Expenses."

                             EXAMPLE OF EXPENSES

An investor would pay the following dollar amounts of expenses on a $1,000
investment in the Fund, assuming (a) 5% annual return and (b) redemption at
the end of each of the time periods indicated (unless otherwise noted):

   
PERIOD                        CLASS A         CLASS B              CLASS C
- ------                        -------      --------------       ------------
                                                     (1)                (1)
 1 year  ....................  $ 33        $ 56      $ 16       $ 27    $ 17
 3 years ....................    51          81        51         53      53
 5 years ....................    69         108        88         91      91
10 years ....................   124         170(2)    170(2)     198     198
    

- ------------
(1) Assumes no redemption.
(2) Class B shares convert to Class A shares approximately eight years after
    purchase; therefore, years nine and ten reflect Class A expenses.

The purpose of the expense table above is to assist investors in understanding
the various costs and expenses that a shareholder of the Fund will bear
directly or indirectly. More complete descriptions of the following expenses
are set forth in the following sections of this Prospectus: (i) varying sales
charges on share purchases -- "Purchases"; (ii) varying CDSCs -- "Purchases";
(iii) management fee -- "Investment Adviser"; and (iv) Rule 12b-1 (i.e.,
distribution plan) fees -- "Distribution Plan."

THE "EXAMPLE" SET FORTH ABOVE SHOULD NOT BE CONSIDERED A REPRESENTATION OF
FUTURE EXPENSES OF THE FUND; ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE
SHOWN.
<PAGE>

   
2.  CONDENSED FINANCIAL INFORMATION
The following information has been audited for at least the latest five fiscal
years of the Fund and should be read in conjunction with the financial
statements included in the Fund's Annual Report to shareholders which are
incorporated by reference into the SAI in reliance upon the report of the
Fund's independent auditors, given upon their authority, as experts in
accounting and auditing. The Fund's independent auditors are Ernst & Young
LLP.
    

                             FINANCIAL HIGHLIGHTS
                                CLASS A SHARES

<TABLE>
<CAPTION>
   
                                                                   YEAR ENDED DECEMBER 31,
                                         ------------------------------------------------------------------------
                                              1997           1996           1995           1994            1993
- -----------------------------------------------------------------------------------------------------------------
                                                                           CLASS A
- -----------------------------------------------------------------------------------------------------------------
<S>                                           <C>            <C>            <C>            <C>             <C>   
PER SHARE DATA (FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD):
Net asset value -- beginning of period        $ 8.41         $ 8.68         $ 8.42         $ 8.99          $ 8.98
                                              ------         ------         ------         ------          ------

Income from investment operations# --
  Net investment income ..............        $ 0.53         $ 0.56         $ 0.59         $ 0.54         $ 0.52
  Net realized and unrealized gain
    (loss) on investments ............         (0.02)         (0.30)          0.25          (0.61)          0.10
                                              ------         ------         ------         ------          ------
    Total from investment operations .        $ 0.51         $ 0.26         $ 0.84         $(0.07)         $ 0.62
                                              ------         ------         ------         ------          ------

Less distributions declared to
shareholders --
  From net investment income .........        $(0.52)        $(0.53)        $(0.58)        $(0.50)         $(0.51)
  From net realized gain on
    investments ......................          --             --             --             --               (0.10)
                                              ------         ------         ------         ------          ------
    Total distributions declared to
      shareholders ...................        $(0.52)        $(0.53)        $(0.58)        $(0.50)         $(0.61)
                                              ------         ------         ------         ------          ------
Net asset value -- end of period .....        $ 8.40         $ 8.41         $ 8.68         $ 8.42          $ 8.99
                                              ======         ======         ======         ======          ======
TOTAL RETURN(+) ......................         6.30%          2.98%         10.36%        (0.76)%           7.00%
RATIOS (TO AVERAGE NET ASSETS)/SUPPLEMENTAL DATA:
  Expenses## .........................         0.84%          0.84%          0.88%          0.89%           1.14%
  Net investment income ..............         6.27%          6.55%          6.91%          6.28%           5.62%
PORTFOLIO TURNOVER ...................          266%           301%           447%           328%            247%
NET ASSETS AT END OF PERIOD (000
OMITTED) .............................      $190,039       $226,976       $248,955       $257,154        $345,597

  # Per share data for the periods subsequent to December 31, 1993, are based on average shares outstanding.
 ## For fiscal years ending after September 1, 1995, the Fund's expenses are calculated without reduction 
    for fees paid indirectly.
(+) Total returns for Class A do not include the applicable sales charge. If the charge had been included, the
    results would have been lower.
</TABLE>
    
<PAGE>
   
                      FINANCIAL HIGHLIGHTS -- CONTINUED
                                CLASS A SHARES
<TABLE>
<CAPTION>

                                                                                                 YEAR ENDED
                                                  YEAR ENDED DECEMBER 31,                       FEBRUARY 28,
                                           ---------------------------------------     --------------------------
                                             1992           1991         1990(S)         1990           1989*
- -----------------------------------------------------------------------------------------------------------------
                                                                            CLASS A
- -----------------------------------------------------------------------------------------------------------------
<S>                                           <C>            <C>            <C>            <C>             <C>   
PER SHARE DATA (FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD):
Net asset value -- beginning of period        $ 9.06         $ 9.09         $ 9.33         $ 9.51          $ 9.63
                                              ------         ------         ------         ------          ------
Income from investment operations --
  Net investment income ..............        $ 0.49         $ 0.52         $ 0.53         $ 0.69         $ 0.23
  Net realized and unrealized gain
    (loss) on investments ............          0.07           0.21           --             0.10           (0.11)
                                              ------         ------         ------         ------          ------
    Total from investment operations .        $ 0.56         $ 0.73         $ 0.53         $ 0.79          $ 0.12
                                              ------         ------         ------         ------          ------
Less distributions declared to
  shareholders --
  From net investment income .........        $(0.45)        $(0.49)        $(0.48)        $(0.67)         $(0.17)
  From net realized gain on
    investments ......................         (0.14)        --             --              (0.14)          (0.02)
  From paid-in capital ...............         (0.05)         (0.27)         (0.29)         (0.16)         (0.05)
                                              ------         ------         ------         ------          ------
    Total distributions declared to
      shareholders ...................        $(0.64)        $(0.76)        $(0.77)        $(0.97)         $(0.24)
                                              ------         ------         ------         ------          ------
Net asset value -- end of period .....        $ 8.98         $ 9.06         $ 9.09         $ 9.33          $ 9.51
                                              ======         ======         ======         ======          ======
TOTAL RETURN(+) ......................         6.51%          8.44%          7.39%+         8.43%           3.02%+
RATIOS (TO AVERAGE NET ASSETS)/SUPPLEMENTAL DATA:
  Expenses ...........................         1.38%          1.33%          1.40%+         1.43%           1.41%+
  Net investment income ..............         5.50%          5.89%          7.01%+         7.16%           6.97%+
PORTFOLIO TURNOVER ...................          391%         1,256%           845%           615%            170%
NET ASSETS AT END OF PERIOD (000
  OMITTED) ...........................      $296,788       $365,644       $427,849       $350,011        $117,584

  * For the period from the commencement of the Fund's investment operations, September 26, 1988 through February
    28, 1989.
  + Annualized.
(+) Total returns for Class A do not include the applicable sales charge. If the charge had been included, the
    results would have been lower.
(S) For the 10 months ended December 31, 1990.
    
</TABLE>
<PAGE>

   
                      FINANCIAL HIGHLIGHTS -- CONTINUED
                                CLASS B SHARES
<TABLE>
<CAPTION>
                                                                    YEAR ENDED DECEMBER 31,
                                           ----------------------------------------------------------------------
                                             1997           1996           1995           1994          1993**
- -----------------------------------------------------------------------------------------------------------------
                                                                            CLASS B
- -----------------------------------------------------------------------------------------------------------------
<S>                                           <C>            <C>            <C>            <C>             <C>   
PER SHARE DATA (FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD):
Net asset value -- beginning of period        $ 8.39         $ 8.67         $ 8.41         $ 8.98          $ 9.17
                                              ------         ------         ------         ------          ------
Income from investment operations# --
  Net investment income ..............        $ 0.46         $ 0.47         $ 0.51         $ 0.47         $ 0.12
  Net realized and unrealized gain
    (loss) on investments ............          --            (0.30)          0.25          (0.62)         (0.17)
                                              ------         ------         ------         ------          ------
    Total from investment operations .        $ 0.46         $ 0.17         $ 0.76         $(0.15)         $(0.05)
                                              ------         ------         ------         ------          ------
Less distributions declared to
shareholders --
  From net investment income .........        $(0.46)        $(0.45)        $(0.50)        $(0.42)         $(0.11)
  From net realized gain on
    investments ......................          --             --             --             --             (0.03)
                                              ------         ------         ------         ------          ------
    Total distributions declared to
      shareholders ...................        $(0.46)        $(0.45)        $(0.50)        $(0.42)         $(0.14)
                                              ------         ------         ------         ------          ------
Net asset value -- end of period .....        $ 8.39         $ 8.39         $ 8.67         $ 8.41          $ 8.98
                                              ======         ======         ======         ======          ======
TOTAL RETURN .........................         5.61%          2.08%          9.31%        (1.65)%         (1.54)%+
RATIOS (TO AVERAGE NET ASSETS)/SUPPLEMENTAL DATA:
  Expenses## .........................         1.63%          1.72%          1.74%          1.79%           1.83%+
  Net investment income ..............         5.48%          5.67%          6.02%          5.42%           4.58%+
PORTFOLIO TURNOVER ...................          266%           301%           447%           328%            247%
NET ASSETS AT END OF PERIOD (000
OMITTED) .............................       $34,843        $34,643        $33,759        $23,918         $11,268

** For the period from the inception of Class B, September 7, 1993, through December 31, 1993.
 + Annualized.
#  Per share data for the periods subsequent to December 31, 1993, are based on average shares outstanding.
## For fiscal years ending after September 1, 1995, the Fund's expenses are calculated without reduction for fees
   paid indirectly.
    

</TABLE>
<PAGE>
   
                      FINANCIAL HIGHLIGHTS -- CONTINUED
                                CLASS C SHARES
<TABLE>
<CAPTION>

                                                                         YEAR ENDED DECEMBER 31,
                                                        ----------------------------------------------------
                                                          1997          1996          1995        1994***
- ------------------------------------------------------------------------------------------------------------
                                                                                 CLASS C
- ------------------------------------------------------------------------------------------------------------
<S>                                                        <C>           <C>           <C>            <C>   
PER SHARE DATA (FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD):
Net asset value -- beginning of period .............       $ 8.37        $ 8.65        $ 8.39         $ 8.62
                                                           ------        ------        ------         ------
Income from investment operations# --
  Net investment income ............................       $ 0.45        $ 0.48        $ 0.51         $ 0.17
  Net realized and unrealized gain (loss) on
    investments ....................................        --            (0.30)         0.25          (0.20)
                                                           ------        ------        ------         ------
    Total from investment operations ...............       $ 0.45        $ 0.18        $ 0.76         $(0.03)
                                                           ------        ------        ------         ------
Less distributions declared to shareholders from net
  investment income ................................       $(0.45)       $(0.46)       $(0.50)        $(0.20)
                                                           ------        ------        ------         ------
Net asset value -- end of period ...................       $ 8.37        $ 8.37        $ 8.65         $ 8.39
                                                           ======        ======        ======         ======
TOTAL RETURN .......................................        5.56%         2.12%         9.33%        (0.33)%++
RATIOS (TO AVERAGE NET ASSETS)/SUPPLEMENTAL DATA:
  Expenses## .......................................        1.69%         1.69%         1.73%          1.62%+
  Net investment income ............................        5.42%         5.68%         5.87%          6.10%+
PORTFOLIO TURNOVER .................................         266%          301%          447%           328%
NET ASSETS AT END OF PERIOD (000 OMITTED) ..........      $18,192       $22,215       $17,365         $3,403

*** For the period from the inception of Class C, August 1, 1994, through December 31, 1994.
  + Annualized.
 ++ Not annualized.
  # Per share data are based on average shares outstanding.
 ## For fiscal years ending after September 1, 1995, the Fund's expenses are calculated without reduction for
    fees paid indirectly.
    
</TABLE>
<PAGE>

   
3.  THE FUND
The Fund is an open-end, diversified management investment company which was
originally organized as a business trust under the laws of The Commonwealth of
Massachusetts in 1985 and reorganized in July, 1988. Shares of the Fund are
sold continuously to the public and the Fund uses the proceeds to buy
securities (issued or guaranteed as to principal and interest by the U.S.
Government, its agencies, authorities or instrumentalities) for its portfolio.
Shares of the Fund are not government-guaranteed and will fluctuate in value,
whereas bank certificates of deposit are insured and offer a fixed return and
U.S. Treasury notes guarantee a return of principal and an income return if
held to maturity. Three classes of shares of the Fund are currently offered
for sale to the general public. Class A shares are offered at net asset value
plus an initial sales charge up to a maximum of 2.50% of the offering price
(or a CDSC upon redemption of 1.00% during the first year in the case of
certain purchases of $1 million or more and certain purchases by retirement
plans) and are subject to an annual distribution fee and service fee up to a
maximum of 0.35% per annum. Class B shares are offered at net asset value
without an initial sales charge but are subject to a CDSC upon redemption
(declining from 4.00% during the first year to 0% after six years) and an
annual distribution fee and service fee up to a maximum of 1.00% per annum.
Class B shares will convert to Class A shares approximately eight years after
purchase. Class C shares are offered at net asset value without an initial
sales charge but are subject to a CDSC upon redemption of 1.00% during the
first year and an annual distribution fee and service fee up to a maximum of
1.00% per annum. Class C shares do not convert to any other class of shares of
the Fund. In addition, the Fund offers an additional class of shares, Class I
shares, exclusively to certain institutional investors. Class I shares are
made available by means of a separate Prospectus Supplement provided to
institutional investors eligible to purchase Class I shares and are offered at
net asset value without an initial sales charge or CDSC upon redemption and
without an annual distribution and service fee.

The Fund's Board of Trustees provides broad supervision over the affairs of
the Fund. A majority of the Trustees of the Fund are not affiliated with the
Adviser. The Adviser is responsible for the management of the Fund's assets
and manages the Fund's portfolio from day to day in accordance with its
investment objective and policies. The selection of investments and the way
they are managed depend upon the conditions and trends in the economy and the
financial market places. The Fund also offers to buy back (redeem) its shares
from its shareholders at any time at net asset value, less the applicable
CDSC.

4.  INVESTMENT OBJECTIVE AND POLICIES
INVESTMENT OBJECTIVE:  The investment objective of the Fund is to preserve
capital and provide high current income (compared to a portfolio entirely
invested in money market instruments). Any investment involves risk and there
can be no assurance that the Fund will achieve its objective.

INVESTMENT POLICIES: The Fund seeks to achieve its objective by investing in
obligations issued or guaranteed by the U.S. Government, its agencies,
authorities or instrumentalities ("Government Securities"). Under normal
market conditions, substantially all of the securities in the Fund's portfolio
will have remaining maturities of five years or less.
    

For purposes of the foregoing investment policy, securities having a certain
maturity will be deemed to include securities with an equivalent "duration" of
such securities. "Duration" is a commonly used measure of the longevity of a
debt instrument that takes into account the full stream of payments received
on the instrument, including both interest and principal payments, based on
their present values. A debt instrument's duration is derived by discounting
principal and interest payments to their present value using the instrument's
current yield to maturity and taking the dollar-weighted average time until
those payments will be received. Contractual rights to dispose of a security,
call options and prepayment assumptions may be considered in calculating
duration because such rights limit the period during which the Fund bears a
market risk with respect to the security.

U.S. GOVERNMENT SECURITIES: The Government Securities in which the Fund
intends to invest include (i) U.S. Treasury obligations, which differ only in
their interest rates, maturities and times of issuance: U.S. Treasury bills
(maturities of one year or less) and U.S. Treasury notes (maturities of one to
ten years), all of which are backed by the full faith and credit of the United
States; and (ii) obligations issued or guaranteed by U.S. Government agencies,
authorities or instrumentalities, some of which are backed by the full faith
and credit of the U.S. Treasury, e.g., direct pass-through certificates of the
Government National Mortgage Association ("GNMA"); some of which are supported
by the right of the issuer to borrow from the U.S. Government, e.g.,
obligations of Federal Home Loan Banks; and some of which are backed only by
the credit of the issuer itself, e.g., obligations of the Student Loan
Marketing Association ("SLMA"). For a description of obligations issued or
guaranteed by U.S. Government agencies, authorities or instrumentalities, see
Appendix B.

Government Securities do not generally involve the credit risks associated with
other types of fixed income securities, although, as a result, the yields
available from Government Securities are generally lower than the yields
available from corporate interest-bearing securities. Like other fixed income
securities, however, the values of Government Securities change as interest
rates fluctuate. THEREFORE, THE NET ASSET VALUE OF THE SHARES OF AN OPEN-END
INVESTMENT COMPANY SUCH AS THE FUND, WHICH INVESTS IN FIXED INCOME SECURITIES,
CHANGES AS THE GENERAL LEVELS OF INTEREST RATES FLUCTUATE. WHEN INTEREST RATES
DECLINE, THE VALUE OF A PORTFOLIO INVESTED IN SUCH SECURITIES CAN BE EXPECTED TO
RISE. CONVERSELY, WHEN INTEREST RATES RISE, THE VALUE OF A PORTFOLIO INVESTED IN
SUCH SECURITIES CAN BE EXPECTED TO DECLINE. Although changes in the value of the
Fund's portfolio securities subsequent to their acquisition are reflected in the
net asset value of shares of the Fund, such changes will not affect the income
received by the Fund from such securities. While the Fund seeks to maintain a
relatively high, stable dividend, no specific level of income or yield
differential can ever be assured since available yields vary over time.

When and if available, Government Securities may be purchased at a discount
from face value. However, the Fund does not intend to hold such securities to
maturity for the purpose of achieving potential capital gains, unless current
yields on these securities remain attractive.

In order to make the Fund an eligible investment for Federal Credit Unions
("FCUs") and national banks, the Fund will invest only in those Government
Securities that are eligible for investment by such institutions without
limitation, and will also generally be managed so as to qualify as an eligible
investment for such institutions. The Fund will comply with all investment
limitations applicable to FCUs including the requirement that a FCU may only
purchase Collateralized Mortgage Obligations (as described below) which would
be eligible under the high risk securities test of Part 703 of the National
Credit Union Administration Rules and Regulations.

Government Securities that the Fund may invest in also include zero coupon
Government Securities. The Fund will not invest in zero coupon Government
Securities with maturities exceeding 10 years and, under normal market
conditions, will not invest in zero coupon Government Securities with remaining
maturities exceeding five years. Zero coupon Government Securities are debt
obligations which are issued or purchased at a significant discount from face
value. The discount approximates the total amount of interest the bonds will
accrue and compound over the period until maturity at a rate of interest
reflecting the market rate of the security at the time of issuance. Zero coupon
Government Securities do not require the periodic payment of interest. Such
investments benefit the issuer by mitigating its need for cash to meet debt
service, but also require a higher rate of return to attract investors who are
willing to defer receipt of such cash. Such investments may experience greater
volatility in market value than Government Securities which make regular
payments of interest. The Fund will accrue income on such investments for tax
and accounting purposes, as required, which is distributable to shareholders and
which, because no cash is received at the time of accrual, may require the
liquidation of other portfolio securities to satisfy the Fund's distribution
obligations.

MORTGAGE PASS-THROUGH SECURITIES:  The Fund may invest in mortgage pass-
through securities that are Government Securities. Mortgage pass-through
securities are securities representing interests in "pools" of mortgage loans.
Monthly payments of interest and principal by the individual borrowers on
mortgages are passed through to the holders of the securities (net of fees
paid to the issuer or guarantor of the securities) as the mortgages in the
underlying mortgage pools are paid off. The average lives of mortgage pass-
throughs are variable when issued because their average lives depend on
prepayment rates. The average life of these securities is likely to be
substantially shorter than their stated final maturity as a result of
unscheduled principal prepayments. Prepayments on underlying mortgages result
in a loss of anticipated interest, and all or part of a premium, if any has
been paid, and the actual yield (or total return) to the Fund may be different
than the quoted yield on the securities. Mortgage prepayments generally
increase with falling interest rates and decrease with rising interest rates.
Like other fixed income securities, when interest rates rise the value of a
mortgage pass-through security generally will decline; however, when interest
rates are declining, the value of mortgage pass-through securities with
prepayment features may not increase as much as that of other fixed income
securities. For a further description of mortgage pass-through securities, see
the SAI.

COLLATERALIZED MORTGAGE OBLIGATIONS AND MULTICLASS PASS-THROUGH SECURITIES:
The Fund may invest a portion of its assets in collateralized mortgage
obligations or "CMOs," which are debt obligations collateralized by mortgage
loans or mortgage pass-through securities (such collateral collectively herein
referred to as "Mortgage Assets"). Mortgage Assets underlying CMOs purchased
by the Fund must be Government Securities. The Fund may also invest a portion
of its assets in multiclass pass-through securities which are interests in a
trust composed of Mortgage Assets. The Fund may only invest in CMOs and
multiclass pass-through securities which are issued or guaranteed by the U.S.
Government, its agencies, authorities or instrumentalities. Unless the context
indicates otherwise, all references herein to CMOs include multiclass pass-
through securities. Payments of principal of and interest on the Mortgage
Assets, and any reinvestment income thereon, provide the funds to pay debt
service on the CMOs or make scheduled distributions on the multiclass pass-
through securities.

In a CMO, a series of bonds or certificates is usually issued in multiple
classes with different maturities. Each class of CMOs, often referred to as a
"tranche," is issued at a specific fixed or floating coupon rate and has a
stated maturity or final distribution date. Principal prepayments on the
Mortgage Assets may cause the CMOs to be retired substantially earlier than
their stated maturities or final distribution dates, resulting in a loss of
all or part of the premium, if any has been paid.

The Fund may also invest in parallel pay CMOs and Planned Amortization Class
CMOs ("PAC Bonds"). Parallel pay CMOs are structured to provide payments of
principal on each payment date to more than one class. PAC Bonds generally
require payments of a specified amount of principal on each payment date. PAC
Bonds are always parallel pay CMOs with the required principal payment on such
securities having the highest priority after interest has been paid to all
classes.

REPURCHASE AGREEMENTS: The Fund may enter into repurchase agreements in order
to earn income on available cash or as a temporary defensive measure. Under a
repurchase agreement, the Fund acquires securities subject to the seller's
agreement to repurchase at a specified time and price. If the seller becomes
subject to a proceeding under the bankruptcy laws or its assets are otherwise
subject to a stay order, the Fund's right to liquidate the securities may be
restricted (during which time the value of the securities could decline). As
discussed in the SAI, the Fund has adopted certain procedures intended to
minimize risk.

   
"WHEN-ISSUED" SECURITIES: Some Government Securities may be purchased on a
"when-issued" or on a "forward delivery" basis, which means that the obligations
will be delivered to the Fund at a future date usually beyond customary
settlement time. The commitment to purchase an obligation for which payment will
be made on a future date may be deemed a separate security. Although the Fund is
not limited as to the amount of Government Securities for which it has such
commitments, it is expected that under normal circumstances not more than 30% of
the Fund's total assets will be committed to such purchases. The Fund does not
pay for such obligations until received and does not start earning interest on
the obligations until the contractual settlement date. The Fund will segregate
liquid assets sufficient to cover its commitments.

LENDING OF SECURITIES: The Fund may seek to increase its income by lending
portfolio securities. Such loans will usually be made only to member banks of
the Federal Reserve System and member firms (and subsidiaries thereof) of the
New York Stock Exchange (the "Exchange") and would be required to be secured
continuously by collateral in cash, Government Securities or an irrevocable
letter of credit maintained on a current basis at an amount at least equal to
the market value of the securities loaned. The Fund will continue to collect
the equivalent of interest on the securities loaned and will also receive
either interest (through investment of cash collateral) or a fee (if the
collateral is Government Securities or a letter of credit).

For additional information concerning the use, risks and costs of "when-
issued" and "forward delivery" securities, CMOs and Mortgage Pass-Through
Securities and the lending of securities, see the SAI.
    

                             --------------------

   
PORTFOLIO TRADING: The Fund intends to fully manage its portfolio by buying
and selling Government Securities, as well as holding selected obligations to
maturity. In managing its portfolio, the Fund seeks to take advantage of
market developments, yield disparities and variations in the creditworthiness
of issuers. For a description of the strategies which may be used by the Fund
in managing its portfolio, which may include adjusting the average duration of
the portfolio in anticipation of a change in interest rates, see the SAI. For
the fiscal year ended December 31, 1997, the Fund had a portfolio turnover
rate in excess of 100%. Transaction costs incurred by the Fund and the
realized capital gains and losses of the Fund may be greater than that of a
fund with a lesser portfolio turnover rate.
    

The primary consideration in placing portfolio security transactions with
broker-dealers for execution is to obtain, and maintain the availability of,
execution at the most favorable prices and in the most effective manner
possible. Consistent with the foregoing primary consideration, the Conduct
Rules of the National Association of Securities Dealers, Inc. (the "NASD"),
and such other policies as the Trustees may determine, the Adviser may
consider sales of shares of the Fund and of the other investment company
clients of MFD as a factor in the selection of broker-dealers to execute the
Fund's portfolio transactions. From time to time, the Adviser may direct
certain portfolio transactions to broker-dealer firms which, in turn, have
agreed to pay a portion of the Fund's operating expenses (e.g., fees charged
by the custodian of the Fund's assets). For a further discussion of portfolio
transactions, see the SAI.

                             --------------------

   
The SAI includes a discussion of other investment policies and a listing of
investment restrictions which govern the investment policies of the Fund. The
specific investment restrictions listed in the SAI may be changed without
shareholder approval unless indicated otherwise (see "Investment Restrictions"
in the SAI). Except with respect to the Fund's policy on borrowing and
investing in illiquid securities, the Fund's investment limitations and
policies are adhered to at the time of purchase or utilization of assets; a
subsequent change in circumstances will not be considered to result in a
violation of policy.

5.  MANAGEMENT OF THE FUND
INVESTMENT ADVISER: The Adviser manages the assets of the Fund pursuant to an
Investment Advisory Agreement, dated August 10, 1988, as amended (the
"Advisory Agreement"). Under the Advisory Agreement, the Adviser provides the
Fund with investment advisory services. D. Richard Smith, a Vice President of
the Adviser, has been the Fund's portfolio manager since February, 1997. Mr.
Smith has been employed as a portfolio manager by the Adviser since 1993.
Prior to 1993, Mr. Smith was a portfolio manager at Salomon Brothers, Inc.
Subject to such policies as the Trustees may determine, the Adviser makes
investment decisions for the Fund. For these services and  facilities, the
Adviser receives a management fee equal to the lesser of (i) 0.40% of the
Fund's average daily net assets or (ii) 0.38% of the Fund's average daily net
assets plus 5.36% of the Fund's gross income (i.e., income other than from the
sale of securities, and short term gains from futures transactions), in each
case on an annualized basis for the Fund's then-current fiscal year. For the
fiscal year ended December 31, 1997 MFS received management fees of $1,022,868
equivalent on an annualized basis to 0.40% of the Fund's average daily net
assets.

MFS also serves as investment adviser to each of the other funds in the MFS
Family of Funds (the "MFS Funds") and to MFS Municipal Income Trust, MFS
Multimarket Income Trust, MFS Government Markets Income Trust, MFS
Intermediate Income Trust, MFS Charter Income Trust, MFS Special Value Trust,
MFS Institutional Trust, MFS Variable Insurance Trust, MFS/Sun Life Series
Trust and seven variable accounts, each of which is a registered investment
company established by Sun Life Assurance Company of Canada (U.S.), a
subsidiary of Sun Life Assurance Company of Canada ("Sun Life"), in connection
with the sale of various fixed/variable annuity contracts. MFS and its wholly
owned subsidiary, MFS Institutional Advisors, Inc., provide investment advice
to substantial private clients.

MFS is America's oldest mutual fund organization. MFS and its predecessor
organizations have a history of money management dating from 1924 and the
founding of the first mutual fund in the United States, Massachusetts
Investors Trust. Net assets under management of the MFS organization were
approximately $82.2 billion on behalf of approximately 3.1 million investor
accounts as of March 31, 1998. As of such date, the MFS organization managed
approximately $21.1 billion of assets in fixed income portfolios and fixed
income portfolios of MFS Institutional Advisors, Inc. MFS is a subsidiary of
Sun Life of Canada (U.S.) Financial Services Holdings, Inc. which in turn is
an indirect wholly owned subsidiary of Sun Life. The  Directors of MFS are
Jeffrey L. Shames, Arnold D. Scott, John W. Ballen, John D. McNeil and Donald
A. Stewart. Mr. Shames is the Chairman, Chief Executive Officer and President
and Mr. Scott is the Secretary and a Senior Executive Vice President, of MFS.
Mr. Ballen is an Executive Vice President and Chief Equity Officer of MFS.
Messrs. McNeil and Stewart are the Chairman and the President, respectively,
of Sun Life. Sun Life, a mutual life insurance  company, is one of the largest
international life insurance companies and has been operating in the United
States since 1895, establishing a headquarters here in 1973. The executive
officers of MFS report to the Chairman of Sun Life.

Mr. Shames, the Chairman of MFS, is a Trustee of the Fund. W. Thomas London,
James O. Yost, Ellen Moynihan, Mark E. Bradley, Stephen E. Cavan, and James R.
Bordewick, Jr., all of whom are officers of MFS, are officers of the Fund.

In certain instances there may be securities which are suitable for the Fund's
portfolio as well as for portfolios of other clients of MFS. Some simultaneous
transactions are inevitable when several clients receive investment advice
from MFS, particularly when the same security is suitable for more than one
client. While in some cases this arrangement could have a detrimental effect
on the price or availability of the security as far as the Fund is concerned,
in other cases, however, it may produce increased investment opportunities for
the Fund.

ADMINISTRATOR:  MFS provides the Fund with certain financial, legal,
compliance, shareholder communications and other administrative services
pursuant to a Master Administrative Services Agreement dated March 1, 1997, as
amended. Under this Agreement, the Fund pays MFS an administrative fee up to
0.015% per annum of the Fund's average daily net assets. This fee reimburses
MFS for a portion of the costs it incurs to provide such services.

DISTRIBUTOR:  MFD, a wholly owned subsidiary of MFS, is the distributor of
shares of the Fund and also serves as distributor for each of the other MFS
Funds.

SHAREHOLDER SERVICING AGENT:  MFS Service Center, Inc. (the "Shareholder
Servicing Agent"), a wholly owned subsidiary of MFS, performs transfer agency,
certain dividend disbursing agency and other services for the Fund.
    

6.  INFORMATION CONCERNING SHARES OF THE FUND

   
PURCHASES
Class A, B and C shares of the Fund may be purchased at the public offering
price through any dealer. As used in the Prospectus and any appendices thereto
the term "dealer" includes any broker, dealer, bank (including bank trust
departments), registered investment adviser, financial planner and any other
financial institutions having a selling agreement or other similar agreement
with MFD. Dealers may also charge their customers fees relating to investments
in the Fund.
    

This Prospectus offers Class A, B and C shares to the general public which
bear sales charges and distribution fees in different forms and amounts, as
described below:

CLASS A SHARES: Class A shares are generally offered at net asset value plus
an initial sales charge, but in certain cases are offered at net asset value
without an initial sales charge but subject to a CDSC.

   
    PURCHASES SUBJECT TO INITIAL SALES CHARGE. Class A shares are offered at
net asset value plus an initial sales charge as follows:
    

<TABLE>
<CAPTION>
                                                            SALES CHARGE* AS
                                                             PERCENTAGE OF:
                                                  ------------------------------------     DEALER ALLOWANCE
                                                                         NET AMOUNT         AS A PERCENTAGE
AMOUNT OF PURCHASE                                 OFFERING PRICE         INVESTED         OF OFFERING PRICE
- ------------------                                 --------------         --------         -----------------
<S>                                                     <C>                 <C>                  <C>  
Less than $50,000 ..............................        2.50%               2.56%                2.25%
$50,000 but less than $100,000 .................        2.25                2.30                 2.25
$100,000 but less than $250,000 ................        2.00                2.04                 1.75
$250,000 but less than $500,000 ................        1.75                1.78                 1.50
$500,000 but less than $1,000,000 ..............        1.50                1.52                 1.25
$1,000,000 or more .............................        None**              None**             See Below**

- ------------
*  Because of rounding in the calculation of offering price, actual sales charges may be more or less than
   those calculated using the percentages above.
** A CDSC will apply to such purchases, as discussed below.
</TABLE>

   
MFD allows discounts to dealers (which are alike for all dealers) from the
applicable public offering price, as shown in the above table. In the case of
the maximum sales charge, the dealer retains 2.25% and MFD retains
approximately 1/4 of 1% of the public offering price. The sales charge may
vary depending on the number of shares of the Fund as well as certain other
MFS Funds owned or being purchased, the existence of an agreement to purchase
additional shares during a 13-month period (or 36-month period for purchases
of $1 million or more) or other special purchase programs.  A description of
the Right of Accumulation, Letter of Intent and Group Purchase privileges by
which the sales charge may be reduced is set forth in the SAI.

    PURCHASES SUBJECT TO A CDSC (but not subject to an initial sales charge).
In the following five circumstances, Class A shares are offered at net asset
value without an initial sales charge but subject to a CDSC, equal to 1% of
the lesser of the value of the shares redeemed (exclusive of reinvested
dividend and capital gain distributions) or the total cost of such shares, in
the event of a share redemption within 12 months following the purchase:
    

      (i) on investments of $1 million or more in Class A shares;

     (ii) on investments in Class A shares by certain retirement plans subject
          to the Employee Retirement Income Security Act of 1974, as amended
          ("ERISA"), if, prior to July 1, 1996: (a) the Plan had established
          an account with the Shareholder Servicing Agent and (b), the
          sponsoring organization had demonstrated to the satisfaction of MFD
          that either (i) the employer had at least 25 employees or (ii) the
          aggregate purchases by the retirement plan of Class A shares of the
          MFS Funds would be in an amount of at least $250,000 within a
          reasonable period of time, as determined by MFD in its sole
          discretion;

   
    (iii) on investments in Class A shares by certain retirement plans subject
          to ERISA, if: (a) the retirement plan and/or sponsoring organization
          subscribes to the MFS FUNDamental 401(k) Program or any similar
          recordkeeping system made available by the Shareholder Servicing
          Agent (the "MFS Participant Recordkeeping System"); (b) the plan
          establishes an account with the Shareholder Servicing Agent on or
          after July 1, 1996; and (c) the aggregate purchases by the
          retirement plan of Class A shares of the MFS Funds will be in an
          aggregate amount of at least $500,000 within a reasonable period of
          time, as determined by MFD in its sole discretion;

    (iv) on investments in Class A shares by certain retirement plans subject
         to ERISA, if: (a) the plan establishes an account with the
         Shareholder Servicing Agent on or after July 1, 1996 and (b) the plan
         has, at the time of purchase, a market value of $500,000 or more
         invested in shares of any class or classes of the MFS Funds. THE
         RETIREMENT PLAN WILL QUALIFY UNDER THIS CATEGORY ONLY IF THE PLAN OR
         ITS SPONSORING ORGANIZATION INFORMS THE SHAREHOLDER SERVICING AGENT
         PRIOR TO THE PURCHASES THAT THE PLAN HAS A MARKET VALUE OF $500,000
         OR MORE INVESTED IN SHARES OF ANY CLASS OR CLASSES OF THE MFS FUNDS.
         THE SHAREHOLDER SERVICING AGENT HAS NO OBLIGATION INDEPENDENTLY TO
         DETERMINE WHETHER SUCH A PLAN QUALIFIES UNDER THIS CATEGORY; AND

     (v) on investments in Class A shares by certain retirement plans subject
         to ERISA, if: (a) the plan establishes an account with the
         Shareholder Servicing Agent on or after July 1, 1997; (b) such plan's
         records are maintained on a pooled basis by the Shareholder Servicing
         Agent; and (c) the sponsoring organization demonstrates to the
         satisfaction of MFD that, at the time of purchase, the employer has
         at least 200 eligible employees and the plan has aggregate assets of
         at least $2,000,000.

In the case of such purchases, MFD will pay commissions to dealers on new
investments in Class A shares made through such dealers as follows:

     COMMISSION PAID BY MFD TO DEALERS      CUMULATIVE PURCHASE AMOUNT
     ---------------------------------      --------------------------
                   1.00%                    On the first $2,000,000, plus
                   0.80%                    Over $2,000,000 to $3,000,000, plus
                   0.50%                    Over $3,000,000 to $50,000,000, plus
                   0.25%                    Over $50,000,000

For purposes of determining the level of commissions to be paid to dealers
with respect to a shareholder's new investment in Class A shares, purchases
for each shareholder account (and certain other accounts for which the
shareholder is a record or beneficial holder) will be aggregated over a 12-
month period (commencing from the date of the first such purchase).
    

See "Redemptions and Repurchases -- Contingent Deferred Sales Charge" for
further discussion of the CDSC.

    WAIVERS OF INITIAL SALES CHARGE AND CDSC.  In certain circumstances, the
initial sales charge imposed upon purchases of Class A shares and the CDSC
imposed upon redemptions of Class A shares is waived.  These circumstances are
described in Appendix A to this Prospectus. In addition to these
circumstances, the CDSC imposed upon the redemption of Class A shares is
waived with respect to shares held by certain retirement plans qualified under
Section 401(a) or 403(b) of the Internal Revenue Code of 1986, as amended (the
"Code"), and subject to ERISA, where:

     (i) the retirement plan and/or sponsoring organization does not subscribe
         to the MFS Participant Recordkeeping System; and

    (ii) the retirement plan and/or sponsoring organization demonstrates to
         the satisfaction of, and certifies to the Shareholder Servicing Agent
         that the retirement plan has, at the time of certification or will
         have pursuant to a purchase order placed with the certification, a
         market value of $500,000 or more invested in shares of any class or
         classes of the MFS Funds and aggregate assets of at least $10
         million;

   
provided, however, that the CDSC will not be waived (i.e., it will be imposed)
(a) with respect to plans which establish an account with the Shareholder
Servicing Agent on or after November 1, 1997, in the event that the Plan makes
a complete redemption of all of its shares in the MFS Funds, or (b) with
respect to plans which established an account with the Shareholder Servicing
Agent prior to November 1, 1997, in the event that there is a change in law or
regulations which results  in a material adverse change to the tax advantaged
nature of the plan, or in the event that the plan and/or sponsoring
organization: (i) becomes insolvent or bankrupt; (ii) is terminated under
ERISA or is liquidated or dissolved; or (iii) is acquired by, merged into, or
consolidated with, any other entity.

CLASS B SHARES: Class B shares are offered at net asset value without an
initial sales charge but subject to a CDSC upon redemption as follows:

                                                               CONTINGENT
YEAR OF REDEMPTION                                           DEFERRED SALES
AFTER PURCHASE                                                   CHARGE
- --------------                                                   ------
First ...................................................          4%
Second ..................................................          4%
Third ...................................................          3%
Fourth ..................................................          3%
Fifth ...................................................          2%
Sixth ...................................................          1%
Seventh and following ...................................          0%
    

The CDSC imposed is assessed against the lesser of the value of the shares
redeemed (exclusive of reinvested dividends and capital gain distributions) or
the total cost of such shares. No CDSC is assessed against shares acquired
through the automatic reinvestment of dividends or capital gain distributions.
See "Redemptions and Repurchases -- Contingent Deferred Sales Charge" for
further discussion of the CDSC.

Except as described below, MFD will pay commissions to dealers of 3.75% of the
purchase price of Class B shares purchased through dealers.  MFD will also
advance to dealers the first year service fee payable under the Fund's
Distribution Plan (see "Distribution Plan" below) at a rate equal to 0.25% of
the purchase price of such shares.  Therefore, the total amount paid to a
dealer upon the sale of Class B shares is 4% of the purchase price of the
shares (commission rate of 3.75% plus a service fee equal to 0.25% of the
purchase price).

Class B shares purchased by a retirement plan whose sponsoring organization
subscribes to the MFS Participant Recordkeeping System and which has established
its account with the Shareholder Servicing Agent on or after July 1, 1996 will
be subject to the CDSC described above, only under limited circumstances, as
explained below under "Waivers of CDSC." With respect to such purchases, MFD
pays an amount to dealers equal to 3.00% of the amount purchased through such
dealers (rather than the 4.00% payment described above), which is comprised of a
commission of 2.75% plus the advancement of the first year service fee equal to
0.25% of the purchase price payable under the Fund's Distribution Plan. As
discussed above, such retirement plans are eligible to purchase Class A shares
of the Fund at net asset value without an initial sales charge but subject to a
1% CDSC if the plan has, at the time of purchase, a market value of $500,000 or
more invested in shares of any class or classes of the MFS Funds. IN THIS EVENT,
THE PLAN OR ITS SPONSORING ORGANIZATION SHOULD INFORM THE SHAREHOLDER SERVICING
AGENT THAT THE PLAN IS ELIGIBLE TO PURCHASE CLASS A SHARES UNDER THIS CATEGORY;
THE SHAREHOLDER SERVICING AGENT HAS NO OBLIGATION INDEPENDENTLY TO DETERMINE
WHETHER SUCH A PLAN QUALIFIES UNDER THIS CATEGORY FOR THE PURCHASE OF CLASS A
SHARES.

   
    WAIVERS OF CDSC. In certain circumstances, the CDSC imposed upon
redemption of Class B shares is waived.  These circumstances are described in
Appendix A to this Prospectus. In addition to these circumstances, the CDSC
imposed upon the redemption of Class B shares is waived with respect to shares
held by a retirement plan whose sponsoring organization subscribes to the MFS
Participant Recordkeeping System and which has established an account with the
Shareholder Servicing Agent on or after July 1, 1996; provided, however, that
the CDSC will not be waived (i.e., it will be imposed) in the event that there
is a change in law or regulations which results in a material adverse change
to the tax advantaged nature of the plan, or in the event that the plan and/or
sponsoring organization: (i) becomes insolvent or bankrupt; (ii) is terminated
under ERISA or is liquidated or dissolved; or (iii) is acquired by, merged
into, or consolidated with, any other entity.
    

    CONVERSION OF CLASS B SHARES. Class B shares of the Fund that remain
outstanding for approximately eight years will convert to Class A shares of
the Fund. Shares purchased through the reinvestment of distributions paid in
respect of Class B shares will be treated as Class B shares for purposes of
the payment of the distribution and service fees under the Fund's Distribution
Plan. See "Distribution Plan" below.  However, for purposes of conversion to
Class A shares, all shares in a shareholder's account that were purchased
through the reinvestment of dividends and distributions paid in respect of
Class B shares (and which have not converted to Class A shares as provided in
the following sentence) will be held in a separate sub-account. Each time any
Class B shares in the shareholder's account (other than those in the sub-
account) convert to Class A shares, a portion of the Class B shares then in
the sub-account will also convert to Class A shares. The portion will be
determined by the ratio that the shareholder's Class B shares not acquired
through reinvestment of dividends and distributions that are converting to
Class A shares bears to the shareholder's total Class B shares not acquired
through reinvestment. The conversion of Class B shares to Class A shares is
subject to the continuing availability of a ruling from the Internal Revenue
Service or an opinion of counsel that such conversion will not constitute a
taxable event for federal tax purposes. There can be no assurance that such
ruling or opinion will be available, and the conversion of Class B shares to
Class A shares will not occur if such ruling or opinion is not available. In
such event, Class B shares would continue to be subject to higher expenses
than Class A shares for an indefinite period.

CLASS C SHARES: Class C shares are offered at net asset value without an
initial sales charge but are subject to a CDSC upon redemption of 1.00% during
the first year. Class C shares do not convert to any other class of shares of
the Fund. The maximum investment in Class C shares that may be made is
$1,000,000 per transaction.

The CDSC imposed is assessed against the lesser of the value of the shares
redeemed (exclusive of reinvested dividend and capital gain distributions) or
the total cost of such shares. No CDSC is assessed against shares acquired
through the automatic reinvestment of dividend or capital gain distributions.
See "Redemptions and Repurchases -- Contingent Deferred Sales Charge" below
for further discussion of the CDSC.

MFD will pay dealers 1.00% of the purchase price of Class C shares purchased
through dealers and, as compensation therefor, MFD will retain the 1.00% per
annum distribution and service fee paid under the Fund's Distribution Plan by
the Fund to MFD for the first year after purchase (see "Distribution Plan"
below).

Class C shares are not currently available for purchase by any retirement plan
qualified under Sections 401(a) or 403(b) of the Internal Revenue Code of
1986, as amended (the "Code"), if the retirement plan and/or the sponsoring
organization subscribe to the MFS FUNDamental 401(k) Plan or another similar
recordkeeping program made available by the Shareholder Servicing Agent.

   
    WAIVERS OF CDSC. In certain circumstances, the CDSC imposed upon
redemption of Class C shares is waived. These circumstances are described in
Appendix A to this Prospectus.

    GENERAL: The following information applies to purchases of all classes of
the Fund's shares.
    

    MINIMUM INVESTMENT. Except as described below, the minimum initial
investment is $1,000 per account and the minimum additional investment is $50
per account. Accounts being established for monthly automatic investments and
under payroll savings programs and tax-deferred retirement programs (other
than IRAs) involving the submission of investments by means of group remittal
statements are subject to a $50 minimum on initial and additional investments
per account. The minimum initial investment for IRAs is $250 per account and
the minimum additional investment is $50 per account. Accounts being
established for participation in the Automatic Exchange Plan are subject to a
$50 minimum on initial and additional investments per account. There are also
other limited exceptions to these minimums for certain tax-deferred retirement
programs. Any minimums may be changed at any time at the discretion of MFD.
The Fund reserves the right to cease offering its shares at any time.

   
    SUBSEQUENT INVESTMENT BY TELEPHONE:  Each shareholder may purchase
additional shares of any MFS Fund by telephoning the Shareholder Servicing
Agent toll-free at (800) 225-2606. The minimum purchase amount is $50 and the
maximum purchase amount is $100,000. Shareholders wishing to avail themselves
of this telephone purchase privilege must so elect on their Account
Application and designate thereon a bank and account number from which
purchases will be made. If a telephone purchase request is received by the
Shareholder Servicing Agent on any business day prior to the close of regular
trading on the Exchange (generally, 4:00 p.m., Eastern time), the purchase
will occur at the closing net asset value of the shares purchased on that day.
The Shareholder Servicing Agent may be liable for any losses resulting from
unauthorized telephone transactions if it does not follow reasonable
procedures designed to verify the identity of the caller. The Shareholder
Servicing Agent will request personal or other information from the caller,
and will normally also record calls. Shareholders should verify the accuracy
of confirmation statements immediately after their receipt.
    

    RIGHT TO REJECT PURCHASE ORDERS/MARKET TIMING. Purchases and exchanges
should be made for investment purposes only. The Fund and MFD each reserve the
right to reject or restrict any specific purchase or exchange request. In the
event that the Fund or MFD rejects an exchange request, neither the redemption
nor the purchase side of the exchange will be processed.

The Fund is not designed for professional market timing organizations or other
entities using programmed or frequent exchanges. The Fund defines a "market
timer" as an individual, or organization acting on behalf of one or more
individudals, if (i) the individual or organization makes three or more
exchange requests out of the Fund per calender year and (ii) any one of such
exchange requests represents shares equal in value to  1/2 of 1% or more of
the Fund's net assets at the time of the request. Accounts under common
ownership or control, including accounts administered by market timers, will
be aggregated for purposes of this definition.

As noted above, the Fund and MFD each reserves the right to reject or restrict
any specific purchase and exchange request and, in addition, may impose
specific limitations with respect to market timers, including delaying for up
to seven days the purchase side of an exchange request by market timers or
specifically rejecting or otherwise restricting purchase or exchange requests
by market timers. Other funds in the MFS Family of Funds may have different
and/or more restrictive policies with respect to market timers than the Fund.
These policies are disclosed in the prospectuses of these other MFS Funds.

   
    DEALER CONCESSIONS.  Dealers may receive different compensation with
respect to sales of Class A, Class B and Class C shares.  In addition, from
time to time, MFD may pay dealers 100% of the applicable sales charge on sales
of Class A shares of certain specified MFS Funds sold by such dealer during a
specified sales period. In addition, MFD or its affiliates may, from time to
time, pay dealers an additional commission equal to 0.50% of the net asset
value of all of the Class B and/or Class C shares of certain specified MFS
Funds sold by such dealer during a specified sales period. In addition, from
time to time, MFD, at its expense, may provide additional commissions,
compensation or promotional incentives ("concessions") to dealers which sell
or arrange for the sale of shares of the Fund.  Such concessions provided by
MFD may include financial assistance to dealers in connection with preapproved
conferences or seminars, sales or training programs for invited registered
representatives and other employees, payment for travel expenses, including
lodging, incurred by registered representatives and other employees for such
seminars or training programs, seminars for the public, advertising and sales
campaigns regarding one or more MFS Funds, and/or other dealer-sponsored
events. From time to time, MFD may make expense reimbursements for special
training of a dealer's registered representatives and other employees in group
meetings or to help pay the expenses of sales contests. Other concessions may
be offered to the extent not prohibited by state laws or any self-regulatory
agency, such as the NASD.
    

    SPECIAL INVESTMENT PROGRAMS.  For shareholders who elect to participate in
certain investment programs (e.g., the Automatic Investment Plan) or other
shareholder services, MFD or its affiliates may either (i) give a gift of
nominal value, such as a hand-held calculator, or (ii) make a nominal
charitable contribution on their behalf.

    RESTRICTIONS ON ACTIVITIES OF NATIONAL BANKS. The Glass-Steagall Act
prohibits national banks from engaging in the business of underwriting,
selling or distributing securities. Although the scope of the prohibition has
not been clearly defined, MFD believes that such Act should not preclude banks
from entering into agency agreements with MFD.  If, however, a bank were
prohibited from so acting, the Trustees would consider what actions, if any,
would be necessary to continue to provide efficient and effective shareholder
services in respect of Shareholders who invested in the Fund through a
national bank. It is not expected that shareholders would suffer any adverse
financial consequence as a result of these occurrences. In addition, state
securities laws on this issue may differ from the interpretation of federal
law expressed herein and banks and financial institutions may be required to
register as broker-dealers pursuant to state law.

                             --------------------

A shareholder whose shares are held in the name of, or controlled by, a dealer
might not receive many of the privileges and services from the Fund (such as
Right of Accumulation, Letter of Intent and certain recordkeeping services)
that the Fund ordinarily provides.

EXCHANGES
Subject to the requirements set forth below, some or all of the shares in an
account with the Fund for which payment has been received by the Fund (i.e.,
an established account) may be exchanged for shares of the same class of any
of the other MFS Funds at net asset value (if available for sale). Shares of
one class may not be exchanged for shares of any other class.

   
    EXCHANGES AMONG MFS FUNDS (EXCLUDING MFS MONEY MARKET FUNDS): No initial
sales charges or CDSC will be imposed in connection with an exchange from
shares of an MFS Fund to shares of any other MFS Fund, except with respect to
exchanges from an MFS money market fund to another MFS Fund which is not an
MFS money market fund (discussed below).  With respect to an exchange
involving shares subject to a CDSC, the CDSC will be unaffected by the
exchange and the holding period for purposes of calculating the CDSC will
carry over to the acquired shares.

    EXCHANGES FROM AN MFS MONEY MARKET FUND: Special rules apply with respect
to the imposition of an initial sales charge or a CDSC for exchanges from an
MFS money market fund to another MFS Fund which is not an MFS money market
fund. These rules are described under the caption "Exchanges" in the
Prospectuses of those MFS money market funds.

    EXCHANGES INVOLVING THE MFS FIXED FUND: Class A shares of any MFS Fund
held by certain qualified retirement plans   may be exchanged for units of
participation of the MFS Fixed Fund (a bank collective investment fund) (the
"Units"), and Units may be exchanged for Class A shares of any MFS Fund.  With
respect to exchanges between Class A shares subject to a CDSC and Units, the
CDSC will carry over to the acquired shares or Units and will be deducted from
the redemption proceeds when such shares or Units are subsequently redeemed,
assuming the CDSC is then payable (the period during which the Class A shares
and the Units were held will be aggregated for purposes of calculating the
applicable CDSC). In the event that a shareholder initially purchases Units
and then exchanges into Class A shares subject to an initial sales charge of
an MFS Fund, the initial sales charge shall be due upon such exchange, but
will not be imposed with respect to any subsequent exchanges between such
Class A shares and Units with respect to shares on which the initial sales
charge has already been paid. In the event that a shareholder initially
purchases Units and then exchanges into Class A shares subject to a CDSC of an
MFS Fund, the CDSC period will commence upon such exchange, and the
applicability of the CDSC with respect to subsequent exchanges shall be
governed by the rules set forth in this paragraph above.

    GENERAL: A shareholder should read the prospectus of the other MFS Fund
into which an exchange is made and consider the differences in objectives,
policies and restrictions before making any exchange. Exchanges will be made
only after instructions in writing or by telephone (an "Exchange Request") are
received for an established account by the Shareholder Servicing Agent in
proper form (i.e., if in writing -- signed by the record owner(s) exactly as
the shares are registered; if by telephone -- proper account identification is
given by the dealer or shareholder of record) and each exchange must involve
either shares having an aggregate value of at least $1,000 ($50 in the case of
retirement plan participants whose sponsoring organizations subscribe to the
MFS FUNDamental 401(k) Plan or another similar 401(k) recordkeeping system
made available by the Shareholder Servicing Agent) or all the shares in the
account. If an Exchange Request is received by the Shareholder Servicing Agent
on any business day prior to the close of regular trading on the New York
Stock Exchange (generally, 4:00 p.m., Eastern time) (the "Exchange"), the
exchange will occur on that day if all the requirements set forth above have
been complied with at that time and subject to the Fund's right to reject
purchase orders. No more than five exchanges may be made in any one Exchange
Request by telephone. Additional information concerning this exchange
privilege and prospectuses for any of the other MFS Funds may be obtained from
dealers or the Shareholder Servicing Agent. For federal and (generally) state
income tax purposes, an exchange is treated as a sale of the shares exchanged
and, therefore, an exchange could result in a gain or loss to the shareholder
making the exchange. Exchanges by telephone are automatically available to
most non-retirement plan accounts and certain retirement plan accounts. For
further information regarding exchanges by telephone, see "Redemptions by
Telephone." The exchange privilege (or any aspect of it) may be changed or
discontinued and is subject to certain limitations, including certain
restrictions on purchases by market timers.
    

REDEMPTIONS AND REPURCHASES
A shareholder may withdraw all or any portion of the value of his account on
any date on which the Fund is open for business by redeeming shares at their
net asset value (a redemption) or by selling such shares to the Fund through a
dealer (a repurchase). Certain redemptions and repurchases are, however,
subject to a CDSC. See "Contingent Deferred Sales Charge" below. Because the
net asset value of shares of the account fluctuates, redemptions or
repurchases, which are taxable transactions, are likely to result in gains or
losses to the shareholder. When a shareholder withdraws an amount from his
account, the shareholder is deemed to have tendered for redemption a
sufficient number of full and fractional shares in his account to cover the
amount withdrawn. The proceeds of a redemption or repurchase will normally be
available within seven days, except for shares purchased or received in
exchange for shares purchased by check (including certified checks or
cashier's checks). Payment of redemption proceeds may be delayed for up to
15 days from the purchase date in an effort to assure that such check has
cleared.

   
    REDEMPTION BY MAIL: Each shareholder may redeem all or any portion of the
shares in his account by mailing or delivering to the Shareholder Servicing
Agent (see back cover for address) a stock power with a written request for
redemption or letter of instruction, together with his share certificates (if
any were issued), all in "good order" for transfer. "Good order" generally
means that the stock power, written request for redemption, letter of
instruction or certificate must be endorsed by the record owner(s) exactly as
the shares are registered and the signature(s) must be guaranteed in the
manner set forth below under the caption "Signature Guarantee." In addition,
in some cases "good order" will require the furnishing of additional
documents. The Shareholder Servicing Agent may make certain de minimis
exceptions to the above requirements for redemption. Within seven days after
receipt of a redemption request in "good order" by the Shareholder Servicing
Agent, the Fund will make payment in cash of the net asset value of the shares
next determined after such redemption request was received, reduced by the
amount of any applicable CDSC described above and the amount of any income tax
required to be withheld, except during any period in which the right of
redemption is suspended or date of payment is postponed because the Exchange
is closed or trading on such Exchange is restricted or to the extent otherwise
permitted by the 1940 Act if an emergency exists. See "Tax Status" below.

    REDEMPTION BY TELEPHONE: Each shareholder may redeem an amount from his
account by telephoning the Shareholder Servicing Agent toll-free at (800)
225-2606. Shareholders wishing to avail themselves of this telephone
redemption privilege must so elect on their Account Application, designate
thereon a bank and account number to receive the proceeds of such redemption,
and sign the Account Application Form with the signature(s) guaranteed in the
manner set forth below under the caption "Signature Guarantee."  The proceeds
of such a redemption, reduced by the amount of any applicable CDSC and the
amount of any income tax required to be withheld, are mailed by check to the
designated account, without charge, if the redemption proceeds do not exceed
$1,000, and are wired in federal funds to the designated account if the
redemption proceeds exceed $1,000.  If a telephone redemption request is
received by the Shareholder Servicing Agent by the close of regular trading on
the Exchange on any business day, shares will be redeemed at the closing net
asset value of the Fund on that day. Subject to the conditions described in
this section, proceeds of a redemption are normally mailed or wired on the
next business day following the date of receipt of the order for redemption.
The Shareholder Servicing Agent will not be responsible for any losses
resulting from unauthorized telephone transactions if it follows reasonable
procedures designed to verify the identity of the caller. The Shareholder
Servicing Agent will request personal or other information from the caller,
and will normally also record calls. Shareholders should verify the accuracy
of confirmation statements immediately after their receipt.

    REPURCHASE THROUGH A DEALER: If a shareholder desires to sell his shares
through his dealer (a repurchase), the shareholder can place a repurchase
order with his dealer, who may charge the shareholder a fee. IF THE DEALER
RECEIVES THE SHAREHOLDER'S ORDER PRIOR TO THE CLOSE OF REGULAR TRADING ON THE
EXCHANGE AND COMMUNICATES IT TO MFD BEFORE THE CLOSE OF BUSINESS ON THE SAME
DAY, THE SHAREHOLDER WILL RECEIVE THE NET ASSET VALUE CALCULATED ON THAT DAY,
REDUCED BY THE AMOUNT OF ANY APPLICABLE CDSC AND THE AMOUNT OF ANY INCOME TAX
REQUIRED TO BE WITHHELD.

    REDEMPTION BY CHECK: Only Class A and Class C shares may be redeemed by
check. A shareholder owning Class A shares of the Fund may elect to have a
special account with State Street Bank and Trust Company (the "Bank") for the
purpose of redeeming Class A or Class C shares from his or her account by check.
The Bank will provide each Class A or Class C shareholder, upon request, with
forms of checks drawn on the Bank. Only shareholders having accounts in which no
share certificates have been issued will be permitted to redeem shares by check.
Checks may be made payable in any amount not less than $500. Shareholders
wishing to avail themselves of this redemption by check privilege should so
request on their Account Application, must execute signature cards (for
additional information, see the Account Application) with signature guaranteed
in the manner set forth under the caption "Signature Guarantee" below, and must
return any Class A or Class C share certificates issued to them. Additional
documentation will be required from corporations, partnerships, fiduciaries or
other such institutional investors. All checks must be signed by the
shareholder(s) of record exactly as the account is registered before the Bank
will honor them. The shareholders of joint accounts may authorize each
shareholder to redeem by check. The check may not draw on monthly dividends
which have been declared but not distributed. SHAREHOLDERS WHO PURCHASE CLASS A
AND CLASS C SHARES BY CHECK (INCLUDING CERTIFIED CHECKS OR CASHIER'S CHECKS) MAY
WRITE CHECKS AGAINST THOSE SHARES ONLY AFTER THEY HAVE BEEN ON THE FUND'S BOOKS
FOR 15 DAYS. WHEN SUCH A CHECK IS PRESENTED TO THE BANK FOR PAYMENT, A
SUFFICIENT NUMBER OF FULL AND FRACTIONAL SHARES WILL BE REDEEMED TO COVER THE
AMOUNT OF THE CHECK, ANY APPLICABLE CDSC AND THE AMOUNT OF ANY INCOME TAX
REQUIRED TO BE WITHHELD. IF THE AMOUNT OF THE CHECK, PLUS ANY APPLICABLE CDSC
AND THE AMOUNT OF ANY INCOME TAX REQUIRED TO BE WITHHELD IS GREATER THAN THE
VALUE OF CLASS A OR CLASS C SHARES HELD IN THE SHAREHOLDER'S ACCOUNT, THE CHECK
WILL BE RETURNED UNPAID, AND THE SHAREHOLDER MAY BE SUBJECT TO EXTRA CHARGES. TO
AVOID DISHONOR OF CHECKS DUE TO FLUCTUATIONS IN ACCOUNT VALUE, SHAREHOLDERS ARE
ADVISED AGAINST REDEEMING ALL OR MOST OF THEIR ACCOUNT BY CHECK. CHECKS SHOULD
NOT BE USED TO CLOSE A FUND ACCOUNT BECAUSE WHEN THE CHECK IS WRITTEN, THE
SHAREHOLDER WILL NOT KNOW THE EXACT TOTAL VALUE OF THE ACCOUNT ON THE DAY THE
CHECK CLEARS. There is presently no charge to the shareholder for the
maintenance of this special account or for the clearance of any checks, but the
Fund and the Bank reserve the right to impose such charges or to modify or
terminate the redemption by check privilege at any time.

    CONTINGENT DEFERRED SALES CHARGE: Investments in Class A, Class B and
Class C shares ("Direct Purchases") will be subject to a CDSC for a period of:
(i) with respect to Class A and Class C shares, 12 months (however, the CDSC
on Class A shares is only imposed with respect to purchases of $1 million or
more of Class A shares or purchases by certain retirement plans of Class A
shares); or (ii) with respect to  Class B shares, six years. Purchases of
Class A shares made during a calendar month, regardless of when during the
month the investment occurred, will age one month on the last day of the month
and each subsequent month. Class C shares and Class B shares purchased on or
after January 1, 1993 will be aggregated on a calendar month basis -- all
transactions made during a calendar month, regardless of when during the month
they have occurred, will age one year at the close of business on the last day
of such month in the following calendar year and each subsequent year. For
Class B shares of the Fund purchased prior to January 1, 1993, transactions
will be aggregated on a calendar year basis -- all transactions made during a
calendar year, regardless of when during the year they have occurred, will age
one year at the close of business on December 31 of that year and each
subsequent year.
    

At the time of a redemption, the amount by which the value of a shareholder's
account for a particular class of shares represented by Direct Purchases
exceeds the sum of the six calendar year aggregations (12 months in the case
of purchases of Class C shares and of purchases of $1 million or more of Class
A shares or purchases by certain retirement plans of Class A shares) of Direct
Purchases may be redeemed without charge ("Free Amount"). Moreover, no CDSC is
ever assessed on additional shares acquired through the automatic reinvestment
of dividends or capital gain distributions ("Reinvested Shares").  Therefore,
at the time of redemption of a particular class, (i) any Free Amount is not
subject to the CDSC and (ii) the amount of the redemption equal to the then-
current value of Reinvested Shares is not subject to the CDSC, but (iii) any
amount of the redemption in excess of the aggregate of the then-current value
of Reinvested Shares and the Free Amount is subject to a CDSC. The CDSC will
first be applied against the amount of Direct Purchases which will result in
any such charge being imposed at the lowest possible rate. The CDSC to be
imposed upon redemptions of shares will be calculated as set forth in
"Purchases" above.

The applicability of a CDSC will be unaffected by exchanges or transfers of
registration, except as described in Appendix A hereto.

   
    GENERAL: The following information applies to redemptions and repurchases
of all classes of the Fund's shares.
    

    SIGNATURE GUARANTEE. In order to protect shareholders against fraud, the
Fund requires, in certain instances as indicated above, that the shareholder's
signature be guaranteed. In these cases the shareholder's signature must be
guaranteed by an eligible bank, broker, dealer, credit union, national
securities exchange, registered securities association, clearing agency or
savings association. Signature guarantees shall be accepted in accordance with
policies established by the Shareholder Servicing Agent.

    REINSTATEMENT PRIVILEGE. Shareholders of the Fund who have redeemed their
shares have a one-time right to reinvest the redemption proceeds in the same
class of shares of any of the MFS Funds (if shares of such Fund are available
for sale) at net asset value (with a credit for any CDSC paid) within 90 days
of the redemption pursuant to the Reinstatement Privilege. If the shares
credited for any CDSC paid are then redeemed within six years of the initial
purchase in the case of Class B shares or within 12 months of the initial
purchase for Class C Shares and certain Class A share purchases, a CDSC will
be imposed upon redemption. Such purchases under the Reinstatement Privilege
are subject to all limitations in the SAI regarding this privilege.

    IN-KIND DISTRIBUTIONS. The Trust agrees to redeem shares of the Fund
solely in cash up to the lesser of $250,000 or 1% of the net asset value of
the Fund during any 90-day period for any one shareholder. The Fund has
reserved the right to pay other redemptions, either totally or partially, by a
distribution in-kind of securities (instead of cash) from the Fund's
portfolio. The securities distributed in such a distribution would be valued
at the same amount as that assigned to them in calculating the net asset value
for the shares being sold. If a shareholder received a distribution in-kind,
the shareholder could incur brokerage or transaction charges when converting
the securities to cash.

    INVOLUNTARY REDEMPTIONS/SMALL ACCOUNTS. Due to the relatively high cost of
maintaining small accounts, the Fund reserves the right to redeem shares in
any account for their then-current value if at any time the total investment
in such account drops below $500 because of redemptions or exchanges, except
in the case of accounts being established for monthly automatic investments
and certain payroll savings programs, Automatic Exchange Plan accounts and
tax-deferred retirement plans, for which there is a lower minimum investment
requirement. See "Purchases -- General -- Minimum Investment." Shareholders
will be notified that the value of their account is less than the minimum
investment requirement and allowed 60 days to make an additional investment
before the redemption is processed.

DISTRIBUTION PLAN
The Trustees have adopted a Distribution Plan for Class A, Class B and Class C
shares pursuant to Section 12(b) of the 1940 Act and Rule 12b-1 thereunder
(the "Distribution Plan"), after having concluded that there is a reasonable
likelihood that the Plan would benefit the Fund and its shareholders.

In certain circumstances, the fees described below may not be imposed or are
being waived.  These circumstances, if any, are described below under the
heading "Current Level of Distribution and Service Fees."

FEATURES COMMON TO EACH CLASS OF SHARES: There are certain features of the
Distribution Plan that are common to each Class of shares, as described below.

    SERVICE FEES. The Distribution Plan provides that the Fund may pay MFD a
service fee of up to 0.25% of the average daily net assets attributable to the
class of shares to which the Distribution Plan relates (i.e., Class A, Class B
or Class C shares, as appropriate) (the "Designated Class") annually in order
that MFD may pay expenses on behalf of the Fund relating to the servicing of
shares of the Designated Class.  The service fee is used by MFD to compensate
dealers which enter into a sales agreement with MFD in consideration for all
personal services and/or account maintenance services rendered by the dealer
with respect to shares of the Designated Class owned by investors for whom
such dealer is the dealer or holder of record.  MFD may from time to time
reduce the amount of the service fees paid for shares sold prior to a certain
date. Service fees may be reduced for a dealer that is the holder or dealer of
record for an investor who owns shares of the Fund having an aggregate net
asset value at or above a certain dollar level.  Dealers may from time to time
be required to meet certain criteria in order to receive service fees.  MFD or
its affiliates are entitled to retain all service fees payable under the
Distribution Plan for which there is no dealer of record or for which
qualification standards have not been met as partial consideration for
personal services and/or account maintenance services performed by MFD or its
affiliates to shareholder accounts.

    DISTRIBUTION FEES. The Distribution Plan provides that the Fund may pay
MFD a distribution fee based on the average daily net assets attributable to
the Designated Class as partial consideration for distribution services
performed and expenses incurred in the performance of MFD's obligations under
its distribution agreement with the Fund.  See "Management of the Fund --
Distributor" in the SAI.  The amount of the distribution fee paid by the Fund
with respect to each class differs under the Distribution Plan, as does the
use by MFD of such distribution fees.  Such amounts and uses are described
below in the discussion of the provisions of the Distribution Plan relating to
each Class of shares. While the amount of compensation received by MFD in the
form of distribution fees during any year may be more or less than the expense
incurred by MFD under its distribution agreement with the Fund, the Fund is
not liable to MFD for any losses MFD may incur in performing services under
its distribution agreement with the Fund.

    OTHER COMMON FEATURES. Fees payable under the Distribution Plan are
charged to, and therefore reduce, income allocated to shares of the Designated
Class.  The provisions of the Distribution Plan relating to operating policies
as well as initial approval, renewal, amendment and termination are
substantially identical as they relate to each class of shares covered by the
Distribution Plan.

FEATURES UNIQUE TO EACH CLASS OF SHARES: There are certain features of the
Distribution Plan that are unique to each class of shares, as described below.

    CLASS A SHARES. Class A shares are generally offered pursuant to an
initial sales charge, a substantial portion of which is paid to or retained by
the dealer making the sale (the remainder of which is paid to MFD).  See
"Purchases -- Class A Shares" above.  In addition to the initial sales charge,
the dealer also generally receives the ongoing 0.25% per annum service fee, as
discussed above.

The distribution fee paid to MFD under the Distribution Plan is equal, on an
annual basis, to 0.10% of the Fund's average daily net assets attributable to
Class A shares.  As noted above, MFD may use the distribution fee to cover
distribution-related expenses incurred by it under its distribution agreement
with the Fund, including commissions to dealers and payments to wholesalers
employed by MFD (e.g., MFD pays commissions to dealers with respect to
purchases of $1 million or more and purchases by certain retirement plans of
Class A shares which are sold at net asset value but which are subject to a 1%
CDSC for one year after purchase).  See "Purchases -- Class A Shares" above.
In addition, to the extent that the aggregate service and distribution fees
paid under the Distribution Plan do not exceed 0.35% per annum of the average
daily net assets of the Fund attributable to Class A shares, the Fund is
permitted to pay such distribution-related expenses or other distribution-
related expenses.

    CLASS B SHARES. Class B shares are offered at net asset value without an
initial sales charge but subject to a CDSC.  See "Purchases -- Class B Shares"
above.  MFD will advance to dealers the first year service fee described above
at a rate equal to 0.25% of the purchase price of such shares and, as
compensation therefore, MFD may retain the service fee paid by the Fund with
respect to such shares for the first year after purchase.  Dealers will become
eligible to receive the ongoing 0.25% per annum service fee with respect to
such shares commencing in the thirteenth month following purchase.

Under the Distribution Plan, the Fund pays MFD a distribution fee equal, on an
annual basis, to 0.75% of the Fund's average daily net assets attributable to
Class B shares.  As noted above, this distribution fee may be used by MFD to
cover its distribution-related expenses under its distribution agreement with
the Fund (including the 3.75% commission it pays to dealers upon purchase of
Class B shares, as described under "Purchases -- Class B Shares" above).

    CLASS C SHARES. Class C shares are offered at net asset value without an
initial sales charge but subject to a CDSC.  See "Purchases -- Class C shares"
above. MFD will pay a commission to dealers of 1.00% of the purchase price of
Class C shares purchased through dealers at the time of purchase. In
compensation for this 1.00% commission paid by MFD to dealers, MFD will retain
the 1.00% per annum Class C distribution and service fees paid by the Fund
with respect to such shares for the first year after purchase, and dealers
will become eligible to receive from MFD the ongoing 1.00% per annum
distribution and service fees paid by the Fund to MFD with respect to such
shares commencing
in the thirteenth month following purchase.

This ongoing 1.00% fee is comprised of the 0.25% per annum service fee paid to
MFD under the Distribution Plan (which MFD in turn pays to dealers), as
discussed above, and a distribution fee paid to MFD (which MFD also in turn
pays to dealers) under the Distribution Plan equal, on an annual basis, to
0.75% of the Fund's average daily net assets attributable to Class C shares.

   
    CURRENT LEVEL OF DISTRIBUTION AND SERVICE FEES: The Fund's Class A, Class
B and Class C distribution and service fees for its current fiscal year are
0.15%, 0.94% and 1.00% per annum, respectively. Payment of the 0.10% per annum
Class A distribution fee will commence on such date as the Trustees of the
Trust may determine. Service fee payments in the amount of 0.15% of the
average daily net assets of the Fund attributable to Class A shares are
currently being paid by the Fund. Payment of the remaining portion of the
service fee will become payable on such date as the Trustees of the Trust may
determine. Except in the case of the first year service fee, the Class B
service fee is currently set at 0.15% per annum and may be increased to a
maximum of 0.25% per annum on such date as the Trustees of the Trust may
determine.
    

DISTRIBUTIONS
Substantially all of the Fund's net investment income for any calendar year is
declared as dividends daily and paid to its shareholders as dividends on a
monthly basis. Dividends generally are distributed on the first business day
of the following month. The Fund may make one or more distributions during the
calendar year to its shareholders from any long-term capital gains, and may
also make one or more distributions during the calendar year to its
shareholders from short-term capital gains. Shareholders may elect to receive
dividends and capital gain distributions in either cash or additional shares
of the same class to which a distribution is made. See "Tax Status" and
"Shareholder Services -- Distribution Options" below. Distributions paid by
the Fund with respect to Class A shares will generally be greater than those
paid with respect to Class B and Class C shares because expenses attributable
to Class B and Class C shares will generally be higher.

   
TAX STATUS
In order to minimize the taxes the Fund would otherwise be required to pay,
the Fund intends to qualify each year as a "regulated investment company"
under Subchapter M of the Internal Revenue Code of 1986, as amended (the
"Code"). Because the Fund intends to distribute all of its net investment
income and net realized capital gains to its shareholders in accordance with
the timing requirements imposed by the Code, it is not expected that the Fund
will be required to pay any federal income or excise taxes.

Shareholders of the Fund normally will have to pay federal income taxes on the
dividends and capital gain distributions they receive from the Fund, whether
paid in cash or reinvested in additional shares. The Fund expects that none of
its distributions will be eligible for the dividends received deduction for
corporations. Shareholders may not have to pay state or local taxes on
dividends derived from interest on U.S. Government obligations. Investors
should consult with their tax advisers in this regard.

Shortly after the end of each calendar year, each shareholder will be sent a
statement setting forth the federal income tax status of all dividends and
distributions for that year, including the portion taxable as ordinary income,
the portion taxable as long-term capital gain (as well as the rate category or
categories under which such gain is taxable), the portion, if any,
representing a return of capital (which is generally free of current taxes but
which results in a basis reduction), the portion representing interest on U.S.
government obligations, and the amount, if any, of federal income tax
withheld.
    

Fund distributions of net capital gains or net short-term capital gains will
reduce the Fund's net asset value per share. Shareholders who buy shares
shortly before the Fund makes such a distribution may thus pay the full price
for the shares and then effectively receive a portion of the purchase price
back as a taxable distribution.

   
The Fund intends to withhold U.S. federal income tax at the rate of 30% (or
any lower rate permitted under an applicable treaty) on taxable dividends and
other payments that are subject to such withholding and that are made to
persons who are neither citizens nor residents of the U.S. The Fund is also
required in certain circumstances to apply backup withholding at the rate of
31% on taxable dividends and redemption proceeds paid to any shareholder
(including a shareholder who is neither a citizen nor a resident of the U.S.)
who does not furnish to the Fund certain information and certifications or who
is otherwise subject to backup withholding. Backup withholding will not,
however, be applied to payments that have been subject to 30% withholding.
Prospective investors should read the Fund's Account Application for
additional information regarding backup withholding of federal income tax and
should consult their own tax advisers as to the tax consequences to them of an
investment in the Fund.
    

NET ASSET VALUE
The net asset value per share of each class of shares of the Fund is
determined each day during which the Exchange is open for trading. This
determination is made once each day as of the close of regular trading on the
Exchange by deducting the amount of the liabilities attributable to the class
from the value of the assets attributable to the class and dividing the
difference by the number of shares of the class outstanding. Assets in the
Fund's portfolio are valued on the basis of their market or other fair value,
as described
in the SAI. The net asset value per share of each class of shares is effective
for orders received by the dealer prior to its calculation and received by MFD
prior to the close of that business day.

DESCRIPTION OF SHARES, VOTING RIGHTS AND LIABILITIES
The Fund has three classes of shares which it offers to the general public,
entitled Class A, Class B and Class C Shares of Beneficial Interest (without
par value). The Fund also has a class of shares which it offers exclusively to
certain institutional investors, entitled Class I shares. Each share of a
class represents an equal proportionate interest in the Fund with each other
share of that class subject to any liabilities of the particular class.
Shareholders are entitled to one vote for each share held and may vote in the
election of Trustees and on other matters submitted to meetings of
shareholders. Each class of shares of the Fund will vote separately on any
material increase in the fees under the Distribution Plan or on any other
matter that affects solely that class of shares, but will otherwise vote
together with all other classes of shares of the Fund on all other matters.
The Fund has reserved the right to create series of shares and to issue
additional classes of shares. Each class of shares of a series would
participate equally in the earnings, dividends and assets attributable to that
class of that particular series. Shareholders of each series would be entitled
to vote separately to approve investment advisory agreements or changes in
investment restrictions, but shares of all series would vote together in the
election of Trustees and selection of accountants. The Fund does not intend to
hold annual shareholder meetings. The Fund's Declaration of Trust provides
that a Trustee may be removed from office in certain instances (see
"Description of Shares, Voting Rights and Liabilities" in the SAI).

Shares have no pre-emptive or conversion rights (except as set forth above in
"Purchases -- Conversion of Class B Shares"). Shares are fully paid and non-
assessable. Should the Fund be liquidated, shareholders of each class are
entitled to share pro rata in the net assets attributable to that class
available for distribution to shareholders. Shares will remain on deposit with
the Shareholder Servicing Agent and certificates will not be issued except in
connection with pledges and assignments and in certain other limited
circumstances.

The Fund is an entity of the type commonly known as a "Massachusetts business
trust." Under Massachusetts law, shareholders of such a trust may, under
certain circumstances, be held personally liable as partners for its
obligations. However, the risk of a shareholder incurring financial loss on
account of shareholder liability is limited to circumstances in which both
inadequate insurance existed  (e.g., fidelity bonding and errors and omissions
insurance) and the Fund itself was unable to meet its obligations.

   
PERFORMANCE INFORMATION
From time to time, the Fund will provide yield, current distribution rate and
total rate of return quotations for each class of shares and may also quote
fund rankings in the relevant fund category from various sources, such as the
Lipper Analytical Securities Corporation and Wiesenberger Investment Companies
Service. Yield quotations are based on the annualized net investment income
per share of each class over a 30-day period stated as a percent of the
maximum public offering price of the shares of that class on the last day of
that period. The yield calculation for Class B and Class C shares assumes no
CDSC is paid. The current distribution rate for each class is generally based
upon the total amount of dividends per share paid by the Fund to shareholders
of that class during the past 12 months and is computed by dividing the amount
of such dividends by the maximum public offering price of that class at the
end of such period. Current distribution rate calculations for Class B and
Class C shares assume no CDSC is paid. The current distribution rate differs
from the yield calculation because it may include distributions to
shareholders from sources other than dividends and interest, such as premium
income from option writing, short-term capital gains, and return of invested
capital, and is calculated over a different period of time. Total rate of
return quotations reflect the average annual percentage change over stated
periods in the value of an investment in a class of shares of the Fund made at
the maximum public offering price of the shares of that class with all
distributions reinvested and which  will give effect to the imposition of any
applicable CDSC assessed upon redemptions of the Fund's Class B and Class C
shares. Such total rate of return quotations may be accompanied by quotations
which do not reflect the deduction of an initial sales charge and which will
thus be higher. The Fund offers multiple classes of shares which were
initially offered for sale to, and purchased by, the public on different dates
(the class "inception date"). The calculation of total rate of return for a
class of shares which has a later class inception date than another class of
shares of the Fund is based both on (i) the performance of the Fund's newer
class from its inception date and (ii) the performance of the Fund's oldest
class from its inception date up to the class inception date of the newer
class. See the SAI for further information on the calculation of total rate of
return for share classes with different class inception dates.

All performance quotations are based on historical performance and are not
intended to indicate future performance. Yield reflects only net portfolio
income as of a stated time and current distribution rate reflects only the
rate of distributions paid by the Fund over a stated period of time, while
total rate of return reflects all components of investment return over a
stated period of time. The Fund's quotations may from time to time be used in
advertisements, shareholder reports or other communications to shareholders.
For a discussion of the manner in which the Fund will calculate its yield,
current distribution rate and total rate of return, see the SAI. For further
information about the Fund's performance for the fiscal year ended December
31, 1997, please see the Fund's Annual Report. A copy of the Annual Report may
be obtained without charge by contacting the Shareholder Servicing Agent (see
back cover for address and phone number). In addition to information provided
in shareholder reports, the Fund may, in its discretion, from time to time,
make a list of all or a portion of its portfolio holdings available to
investors upon request.
    

7.  SHAREHOLDER SERVICES
Shareholders with questions concerning the shareholder services described
below or concerning other aspects of the Fund should contact the Shareholder
Servicing Agent (see back cover for address and phone number).

   
ACCOUNT AND CONFIRMATION STATEMENTS:  Each shareholder will  receive
confirmation statements showing the transaction activity in his account.
Cancelled checks, if any, will be sent to shareholders monthly. At the end of
each calendar year, each shareholder will receive information regarding the
tax status of reportable dividends and distributions for that year (see "Tax
Status").

DISTRIBUTION OPTIONS:  The following options are available to all accounts
(except Systematic Withdrawal Plan accounts) and may be changed as often as
desired by  notifying the Shareholder Servicing Agent:

    o Dividends and capital gain distributions reinvested in additional shares.
      This option will be assigned if no other option is specified;

    o Dividends in cash; capital gain distributions reinvested in additional
      shares;

    o Dividends and capital gain distributions in cash.
    

Reinvestments (net of any tax withholding) will be made in additional full and
fractional shares of the same class of shares at the net asset value in effect
at the  close of business on the last business day of the month. Dividends and
capital gain distributions in amounts less than $10 will automatically be
reinvested in additional shares of the Fund. If a shareholder has elected to
receive dividends and/or capital gain distributions in cash, and the postal or
other delivery service is unable to deliver checks to the shareholder's
address of record or the shareholder does not respond to mailings from the
Shareholder Servicing Agent with regard to uncashed checks, such shareholder's
distribution option will automatically be converted to having all dividends
and other distributions reinvested in additional shares. Any request to change
a distribution option must be received by the Shareholder Servicing Agent by
the record date for a dividend or distribution in order to be effective for
that dividend or distribution. No interest will accrue on amounts represented
by uncashed distribution or redemption checks.

   
INVESTMENT AND WITHDRAWAL PROGRAMS:  For the convenience of shareholders, the
Fund makes available the following programs designed to enable shareholders to
add to their investment in an account with the Fund or withdraw from it with a
minimum of paper work. The programs involve no extra charge to shareholders
(other than a sales charge in the case of certain Class A share purchases) and
may be changed or discontinued at any time by a shareholder or the Fund.

    LETTER OF INTENT:  If a shareholder (other than a group purchaser as
described in the SAI) anticipates purchasing $50,000 or more of Class A shares
of the Fund alone or in combination with shares of any class of other MFS
Funds or the MFS Fixed Fund (a bank collective investment fund) within a 13-
month period (or 36-month period for purchases of $1 million or more), the
shareholder may obtain such shares at the same reduced sales charge as though
the total quantity were invested in one lump sum, subject to escrow
arrangements and the appointment of an attorney for redemptions from the
escrow amount if the intended purchases are not completed, by completing the
Letter of Intent section of the Account Application.

    RIGHT OF ACCUMULATION:  A shareholder qualifies for cumulative quantity
discounts on purchases of Class A shares when his new investment, together
with the current offering price value of all holdings of Class A, B and C
shares of that shareholder in the MFS Funds or the MFS Fixed Fund (a bank
collective investment fund) reaches a discount level.

    DISTRIBUTION INVESTMENT PROGRAM:  Shares of a particular class of the Fund
may be sold at net asset value (and without any applicable CDSC) through the
automatic reinvestment of dividend and capital gain distributions from the
same class of another MFS Fund. Furthermore, distributions made by the Fund
may be automatically invested at net asset value (and without any applicable
CDSC) in shares of the same class of another MFS Fund, if shares of such Fund
are available for sale.

    SYSTEMATIC WITHDRAWAL PLAN:  A shareholder may direct the Shareholder
Servicing Agent to send him (or anyone he designates) regular periodic
payments based upon the value of his account. Each payment under a Systematic
Withdrawal Plan (a "SWP") must be at least $100, except in certain limited
circumstances. The aggregate withdrawals of Class B and Class C shares in any
year pursuant to a SWP will not be subject to a CDSC and are generally limited
to 10% of the value of the account at the time of the establishment of the
SWP. The CDSC will not be waived in the case of SWP redemptions of Class A
shares which are subject to a CDSC.

DOLLAR COST AVERAGING PROGRAMS
    AUTOMATIC INVESTMENT PLAN:  Cash investments of $50 or more may be made
through a shareholder's checking account on any day of the month. If the
shareholder does not specify a date, the investment will automatically occur
on the first business day of the month. Required forms are available from the
Shareholder Servicing Agent or investment dealers.
    

    AUTOMATIC EXCHANGE PLAN: Shareholders having account balances of at least
$5,000 in any MFS Fund may exchange their shares for the same class of shares
of the other MFS Funds (and, in the case of Class C shares, for shares of MFS
Money Market Fund) if such funds are available for sale under the Automatic
Exchange Plan, a dollar cost averaging program. The Automatic Exchange Plan
provides for automatic monthly or quarterly exchanges of funds from the
shareholder's account in an MFS Fund for investment in the same class of
shares of other MFS Funds selected by the shareholder if such fund is
available for sale. Under the Automatic Exchange Plan, exchanges of at least
$50 each may be made to up to six different funds. A shareholder should
consider the objectives and policies of a fund and review its prospectus
before electing to exchange money into such fund through the Automatic
Exchange Plan. No transaction fee is imposed in connection with exchange
transactions under the Automatic Exchange Plan. However, exchanges from MFS
Money Market Fund, MFS Government Money Market Fund or Class A shares of MFS
Cash Reserve Fund will be subject to any applicable sales charge. For federal
and (generally) state income tax purposes, an exchange is treated as a sale of
the shares exchanged and, therefore, could result in a capital gain or loss to
the shareholder making the exchange. See the SAI for further information
concerning the Automatic Exchange Plan. Investors should consult their tax
advisers for information regarding the potential capital gain and loss
consequences of transactions under the Automatic Exchange Plan.

Because a dollar cost averaging program involves periodic purchases of shares
regardless of fluctuating share offering prices, a shareholder should consider
his financial ability to continue his purchases through periods of low price
levels. Maintaining a dollar cost averaging program concurrently with a
withdrawal program could be disadvantageous because of the sales charges
included in share purchases in the case of Class A shares, and because of the
assessment of the CDSC for certain share redemptions in the case of Class A
shares.

   
TAX-DEFERRED RETIREMENT PLANS:  Except as noted under "Purchases -- Class C
Shares," shares of the Fund may be purchased by all types of tax-deferred
retirement plans, including IRAs, SEP-IRA plans, 401(k) plans, 403(b) plans
and other corporate pension and profit-sharing plans. Investors should consult
with their tax advisers before establishing any of the tax-deferred retirement
plans described above.
    

                             --------------------

   
The Fund's SAI, dated May 1, 1998, as amended or supplemented from time to
time, contains more detailed information about the Fund, including, but not
limited to, information related to: (i) investment objective, policies and
restrictions; (ii) Trustees, officers and investment adviser; (iii) portfolio
transactions; (iv) the method used to calculate performance quotations of the
Fund; (v) various services and privileges provided for the benefit of
shareholders; (vi) the Distribution Plan; (vii) determination of net asset
value of shares of the Fund; and (viii) certain voting rights of shareholders.
    
<PAGE>

                                  APPENDIX A

                           WAIVERS OF SALES CHARGES

   
This Appendix sets forth the various circumstances in which all applicable
sales charges are waived (Section I), the initial sales charge and the
contingent deferred sales charge ("CDSC") for Class A shares is waived
(Section II), and the CDSC for Class B and Class C shares is waived (Section
III). As used in this Appendix, the term "dealer" includes any broker, dealer,
bank (including bank trust departments), registered investment adviser,
financial planner and any other financial institutions having a selling
agreement or other similar agreement with MFS Fund Distributors, Inc. ("MFD").
    

I.  WAIVERS OF ALL APPLICABLE SALES CHARGES

    In the following circumstances, the initial sales charge imposed on
    purchases of Class A shares and the CDSC imposed on certain redemptions of
    Class A shares and on redemptions of Class B and Class C shares, as
    applicable, is waived:

    1.  DIVIDEND REINVESTMENT

        o  Shares acquired through dividend or capital gain reinvestment; and

        o  Shares acquired by automatic reinvestment of distributions of
           dividends and capital gains of any fund in the MFS Family of Funds
           ("MFS Funds") pursuant to the Distribution Investment Program.

    2.  CERTAIN ACQUISITIONS/LIQUIDATIONS

        o  Shares acquired on account of the acquisition or liquidation of
           assets of other investment companies or personal holding companies.

    3.  AFFILIATES OF AN MFS FUND/CERTAIN DEALERS. Shares acquired by:

        o  Officers, eligible directors, employees (including retired employees)
           and agents of MFS, Sun Life Assurance Company of Canada ("Sun Life")
           or any of their subsidiary companies;

   
        o  Trustees and retired trustees of any investment company for which MFD
           serves as distributor;
    

        o  Employees, directors, partners, officers and trustees of any sub-
           adviser to any MFS Fund;

   
        o  Employees or registered representatives of dealers;

        o  Certain family members of any such individual and their spouses
           identified above and certain trusts, pension, profit-sharing or other
           retirement plans for the sole benefit of such persons, provided the
           shares are not resold except to the MFS Fund which issued the shares;
           and
    

        o  Institutional Clients of MFS or MFS Institutional Advisors, Inc.
           ("MFSI").

    4.  INVOLUNTARY REDEMPTIONS (CDSC WAIVER ONLY)

        o  Shares redeemed at an MFS Fund's direction due to the small size of a
           shareholder's account. See "Redemptions and Repurchases -- General --
           Involuntary Redemptions/ Small Accounts" in the Prospectus.

    5.  RETIREMENT PLANS (CDSC WAIVER ONLY). Shares redeemed on account of
        distributions made under the following circumstances:

        INDIVIDUAL RETIREMENT ACCOUNTS ("IRA'S")

        o  Death or disability of the IRA owner.

        SECTION 401(a) PLANS ("401(a) PLANS") AND SECTION 403(b) EMPLOYER
        SPONSORED PLANS ("ESP PLANS")

        o  Death, disability or retirement of 401(a) or ESP Plan participant;

        o  Loan from 401(a) or ESP Plan (repayment of loans, however, will
           constitute new sales for purposes of assessing sales charges);

        o  Financial hardship (as defined in Treasury Regulation Section
           1.401(k)-1(d)(2), as amended from time to time);

        o  Termination of employment of 401(a) or ESP Plan participant
           (excluding, however, a partial or other termination of the 401(a) or
           ESP Plan);

        o  Tax-free return of excess 401(a) or ESP Plan contributions;

        o  To the extent that redemption proceeds are used to pay expenses (or
           certain participant expenses) of the 401(a) or ESP Plan (e.g.,
           participant account fees), provided that the 401(a) or ESP Plan
           sponsor subscribes to the MFS FUNDamental 401(k) Plan or another
           similar recordkeeping system made available by the Shareholder
           Servicing Agent; and

        o  Distributions from a 401(a) or ESP Plan that has invested its assets
           in one or more of the MFS Funds for more than 10 years from the later
           to occur of: (i) January 1, 1993 or (ii) the date such 401(a) or ESP
           Plan first invests its assets in one or more of the MFS Funds. The
           sales charges will be waived in the case of a redemption of all of
           the 401(a) or ESP Plan's shares in all MFS Funds (i.e., all the
           assets of the 401(a) or ESP Plan invested in the MFS Funds are
           withdrawn), unless immediately prior to the redemption, the aggregate
           amount invested by the 401(a) or ESP Plan in shares of the MFS Funds
           (excluding the reinvestment of distributions) during the prior four
           years equals 50% or more of the total value of the 401(a) or ESP
           Plan's assets in the MFS Funds, in which case the sales charges will
           not be waived.

        SECTION 403(b) SALARY REDUCTION ONLY PLANS ("SRO PLANS")

        o  Death or disability of SRO Plan participant.

    6.  CERTAIN TRANSFERS OF REGISTRATION (CDSC WAIVER ONLY). Shares
        transferred:

        o  To an IRA rollover account where any sales charges with respect to
           the shares being reregistered would have been waived had they been
           redeemed; and

        o  From a single account maintained for a 401(a) Plan to multiple
           accounts maintained by the Shareholder Servicing Agent on behalf of
           individual participants of such Plan, provided that the Plan sponsor
           subscribes to the MFS FUNDamental 401(k) Plan or another similar
           recordkeeping system made available by the Shareholder Servicing
           Agent.

   
    7.  LOAN REPAYMENTS

        o  Shares acquired pursuant to repayments by retirement plan
           participants of loans from 401(a) or ESP Plans with respect to which
           such Plan or its sponsoring organization subscribes to the MFS
           FUNDamental 401(k) Program or the MFS Recordkeeper Plus Program (but
           not the MFS Recordkeeper Program).
    

II. WAIVERS OF CLASS A SALES CHARGES

    In addition to the waivers set forth in Section I above, in the following
    circumstances the initial sales charge imposed on purchases of Class A
    shares and the CDSC imposed on certain redemptions of Class A shares is
    waived:

   
    1.  WRAP ACCOUNT AND FUND "SUPERMARKET" INVESTMENTS

        o  Shares acquired by investments through certain dealers (including
           registered investment advisers and financial planners) which have
           established certain operational arrangements with MFD which includes
           a requirement that such shares be sold for the sole benefit of
           clients participating in a "wrap" account, mutual fund "supermarket"
           account or a similar program under which such clients pay a fee to
           such dealer.

    2.  INVESTMENT BY INSURANCE COMPANY SEPARATE ACCOUNTS
    

        o  Shares acquired by insurance company separate accounts.

   
    3.  RETIREMENT PLANS
    

        ADMINISTRATIVE SERVICES ARRANGEMENTS

   
        o  Shares acquired by retirement plans or trust accounts whose third
           party administrators, or dealers have entered into an administrative
           services agreement with MFD or one of its affiliates to perform
           certain administrative services, subject to certain operational and
           minimum size requirements specified from time to time by MFD or one
           or more of its affiliates.
    

        REINVESTMENT OF DISTRIBUTIONS FROM QUALIFIED RETIREMENT PLANS

        o  Shares acquired through the automatic reinvestment in Class A shares
           of Class A or Class B distributions which constitute required
           withdrawals from qualified retirement plans.

        Shares redeemed on account of distributions made under the following
        circumstances:

        IRA'S

        o  Distributions made on or after the IRA owner has attained the age of
           59 1/2 years old; and

        o  Tax-free returns of excess IRA contributions.

        401(a) PLANS

        o  Distributions made on or after the 401(a) Plan participant has
           attained the age of 59 1/2 years old; and

        o  Certain involuntary redemptions and redemptions in connection with
           certain automatic withdrawals from a Plan.

   
        ESP PLANS AND SRO PLANS

        o  Distributions made on or after the ESP or SRO Plan participant has
           attained the age of 59 1/2 years old.

    4.  PURCHASES OF AT LEAST $5 MILLION (CDSC WAIVER ONLY)

        o  Shares acquired of Eligible Funds (as defined below) if the
           shareholder's investment equals or exceeds $5 million in one or more
           Eligible Funds (the "Initial Purchase") (this waiver applies to the
           shares acquired from the Initial Purchase and all shares of Eligible
           Funds subsequently acquired by the shareholder); provided that the
           dealer through which the Initial Purchase is made enters into an
           agreement with MFD to accept delayed payment of commissions with
           respect to the Initial Purchase and all subsequent investments by the
           shareholder in the Eligible Funds subject to such requirements as may
           be established from time to time by MFD (for a schedule of the amount
           of commissions paid by MFD to the dealer on such investments, see
           "Purchases -- Class A Shares -- Purchases Subject to a CDSC" in the
           Prospectus). The Eligible Funds are all funds included in the MFS
           Family of Funds, except for Massachusetts Investors Trust,
           Massachusetts Investors Growth Stock Fund, MFS Municipal Bond Fund,
           MFS Municipal Limited Maturity Fund, MFS Money Market Fund, MFS
           Government Money Market Fund and MFS Cash Reserve Fund.

    5.  BANK TRUST DEPARTMENTS AND LAW FIRMS

        Shares acquired by certain bank trust departments or law firms acting
        as trustee or manager for trust accounts which have entered into an
        administrative services agreement with MFD and are acquiring such
        shares for the benefit of their trust account clients.

III. WAIVERS OF CLASS B AND CLASS C SALES CHARGES
    

    In addition to the waivers set forth in Section I above, in the following
    circumstances the CDSC imposed on redemptions of Class B and Class C
    shares is waived:

    1.  SYSTEMATIC WITHDRAWAL PLAN

   
        o  Systematic Withdrawal Plan redemptions with respect to up to 10% per
           year (or 15% per year, in the case of accounts registered as IRAs
           where the redemption is made pursuant to Section 72(t) of the
           Internal Revenue Code of 1986, as amended) of the account value at
           the time of establishment.
    

    2.  DEATH OF OWNER

        o  Shares redeemed on account of the death of the account owner if the
           shares are held solely in the deceased individual's name or in a
           living trust for the benefit of the deceased individual.

    3.  DISABILITY OF OWNER

        o  Shares redeemed on account of the disability of the account owner if
           shares are held either solely or jointly in the disabled individual's
           name or in a living trust for the benefit of the disabled individual
           (in which case a disability certification form is required to be
           submitted to the Shareholder Servicing Agent).

    4.  RETIREMENT PLANS. Shares redeemed on account of distributions made under
        the following circumstances:

   
        IRA'S, 401(a) PLANS, ESP PLANS AND SRO PLANS

        o  Distributions made on or after the IRA owner or the 401(a), ESP or
           SRO Plan participant, as applicable, has attained the age of 70 1/2
           years old, but only with respect to the minimum distribution under
           applicable Internal Revenue Code ("Code") rules.
    

        SALARY REDUCTION SIMPLIFIED EMPLOYEE PENSION PLANS ("SAR-SEP PLANS")

        o  Distributions made on or after the SAR-SEP Plan participant has
           attained the age of 70 1/2 years old, but only with respect to the
           minimum distribution under applicable Code rules;

        o  Death or disability of a SAR-SEP Plan participant.
<PAGE>

                                   APPENDIX B

              DESCRIPTION OF OBLIGATIONS ISSUED OR GUARANTEED BY
          U.S. GOVERNMENT AGENCIES, AUTHORITIES OR INSTRUMENTALITIES

FHA DEBENTURES are debentures issued by the Federal Housing Administration and
fully and unconditionally guaranteed by the U.S. Government.

GNMA CERTIFICATES are mortgage-backed securities, with timely payment
guaranteed by the full faith and credit of the U.S. Government which represent
partial ownership interests in a pool of mortgage loans issued by lenders such
as mortgage bankers, commercial banks and savings and loan associations. Each
mortgage loan included in the pool is also insured or guaranteed by the
Federal Housing Administration, the Veterans Administration or the Farmers
Home Administration.

FHLMC BONDS are bonds issued and guaranteed by the Federal Home Loan Mortgage
Corporation and are not guaranteed by the U.S. Government.

FNMA BONDS are bonds issued and guaranteed by the Federal National Mortgage
Association and are not guaranteed by the U.S. Government.

PUBLIC HOUSING NOTES AND BONDS are short-term project notes and long-term
bonds issued by public housing and urban renewal agencies in connection with
programs administered by the Department of Housing and Urban Development of
the U.S. Government, the payment of which is guaranteed by the full faith and
credit of the U.S. Government.

SBA DEBENTURES are debentures issued and guaranteed as to principal and
interest by the Small Business Administration of the U.S. Government.

SLMA DEBENTURES are debentures backed by the Student Loan Marketing
Association and are not guaranteed by the U.S. Government.

TITLE XI BONDS are ship financing bonds issued under Title XI of the Merchant
Marine Act of 1936, as amended, and guaranteed by the Maritime Administration
of the U.S. Government.

WASHINGTON METROPOLITAN AREA TRANSIT AUTHORITY BONDS are bonds issued by the
Washington Metropolitan Area Transit Authority and guaranteed by the full
faith and credit of the U.S. Government.

The list of securities set forth above does not purport to be an exhaustive
compilation of all debt obligations issued or guaranteed by U.S. Government
agencies, authorities or instrumentalities. The Fund reserves the right to
invest in debt obligations issued or guaranteed by U.S. Government agencies,
authorities or instrumentalities in addition to those listed above.
<PAGE>

Investment Adviser
Massachusetts Financial
Services Company
500 Boylston Street
Boston, MA 02116
(617) 954-5000

Distributor
MFS Fund Distributors, Inc.
500 Boylston Street
Boston, MA 02116
(617) 954-5000

Custodian and Dividend
Disbursing Agent
State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02110

Shareholder Servicing Agent
MFS Service Center, Inc.
500 Boylston Street
Boston, MA 02116
Toll-free: (800) 225-2606

Mailing Address:
P.O. Box 2281
Boston, MA 02107-9906

Independent Auditors
Ernst & Young LLP
200 Clarendon Street
Boston, MA 02116

   
                                                   MGL-1-5/98/124M  28/228/328
    
<PAGE>
[LOGO] M F S(SM)
INVESTMENT MANAGEMENT

MFS(R) GOVERNMENT                                        STATEMENT OF
LIMITED MATURITY FUND                                    ADDITIONAL INFORMATION

   
(A Member of the MFS Family of Funds(R))                          May 1, 1998
- ------------------------------------------------------------------------------
                                                                          Page
 1.  Definitions ......................................................      2
 2.  Investment Objective, Policies and Restrictions ..................      2
 3.  Management of the Fund ...........................................      5
        Trustees ......................................................      5
        Officers ......................................................      5
        Trustee Compensation Table ....................................      6
        Investment Adviser ............................................      6
        Administrator .................................................      7
        Custodian .....................................................      7
        Shareholder Servicing Agent ...................................      7
        Distributor ...................................................      7
 4.  Portfolio Transactions and Brokerage Commissions .................      8
 5.  Shareholder Services .............................................      8
        Investment and Withdrawal Programs ............................      8
        Exchange Privilege ............................................     10
        Tax-Deferred Retirement Plans .................................     11
 6.  Tax Status .......................................................     11
 7.  Determination of Net Asset Value and Performance .................     12
 8.  Distribution Plan ................................................     14
 9.  Description of Shares, Voting Rights and Liabilities .............     15
10.  Independent Auditors and Financial Statements ....................     16
     Appendix A -- Performance Information ............................    A-1
    

MFS GOVERNMENT LIMITED MATURITY FUND
500 Boylston Street, Boston, Massachusetts 02116
(617) 954-5000

   
This Statement of Additional Information, as amended or supplemented from time
to time (the "SAI"), sets forth information which may be of interest to
investors but which is not necessarily included in the Fund's Prospectus,
dated May 1, 1998. This SAI should be read in conjunction with the Prospectus,
a copy of which may be obtained without charge by contacting the Shareholder
Servicing Agent (see last page for address and phone number).
    

THIS SAI IS NOT A PROSPECTUS AND IS AUTHORIZED FOR DISTRIBUTION TO PROSPECTIVE
INVESTORS ONLY IF PRECEDED OR ACCOMPANIED BY A CURRENT PROSPECTUS.
<PAGE>

1.  DEFINITIONS
   "Fund"                        -- MFS(R) Government Limited Maturity
                                    Fund, a Massachusetts business
                                    trust. The Fund was known as "MFS
                                    Government Premium Account" until
                                    its name was changed on August 3,
                                    1992, and as "MFS Government
                                    Premium Fund" until its name was
                                    changed on May 1, 1993.

   "MFS" or the "Adviser"        -- Massachusetts Financial Services
                                    Company, a Delaware corporation.

   "MFD"                         -- MFS Fund Distributors, Inc., a
                                    Delaware corporation.

   
   "Prospectus"                  -- The Prospectus of the Fund, dated
                                    May 1, 1998, as amended or
                                    supplemented from time to time.
    

2.  INVESTMENT OBJECTIVE, POLICIES AND RESTRICTIONS
INVESTMENT OBJECTIVE AND POLICIES. The investment objective and policies of
the Fund are described in the Prospectus and below. The following discussion
of the Fund's investment policies and restrictions supplements and should be
read in conjunction with the information set forth in the "Investment
Objective and Policies" section of the Prospectus.

The Fund may invest in collateralized mortgage obligations, multiclass pass-
through securities issued or guaranteed by the U.S. Government, its agencies,
authorities or instrumentalities and in zero coupon Government Securities (as
defined in the Prospectus).

MORTGAGE PASS-THROUGH SECURITIES: The Fund may invest in mortgage pass-through
securities as described in the Prospectus.

Payment of principal and interest on some mortgage pass-through securities
(but not the market value of the securities themselves) may be guaranteed by
the full faith and credit of the U.S. Government (in the case of securities
guaranteed by the Government National Mortgage Association ("GNMA")); or
guaranteed by agencies, authorities or instrumentalities of the U.S.
Government (such as the Federal National Mortgage Association ("FNMA") or the
Federal Home Loan Mortgage Corporation ("FHLMC"), which are supported only by
the discretionary authority of the U.S. Government to purchase the agency's
obligations).

Interests in pools of mortgage-related securities differ from other forms of
debt securities, which normally provide for periodic payment of interest in
fixed amounts with principal payments at maturity or specified call dates.
Instead, these securities provide a monthly payment which consists of both
interest and principal payments. In effect, these payments are a "pass-
through" of the monthly payments made by the individual borrowers on their
mortgage loans, net of any fees paid to the issuer or guarantor of such
securities. Additional payments are caused by prepayments of principal
resulting from the sale, refinancing or foreclosure of the underlying
property, net of fees or costs which may be incurred. Some mortgage pass-
through securities (such as securities issued by the GNMA) are described as
"modified pass-through." These securities entitle the holder to receive all
interests and principal payments owed on the mortgages in the mortgage pool,
net of certain fees, at the scheduled payment dates regardless of whether the
mortgagor actually makes the payment.

The principal governmental guarantor of mortgage pass-through securities is
GNMA, a wholly owned U.S. Government corporation within the Department of
Housing and Urban Development. GNMA is authorized to guarantee, with the full
faith and credit of the U.S. Government, the timely payment of principal and
interest on securities issued by institutions approved by GNMA (such as
savings and loan institutions, commercial banks and mortgage bankers) and
backed by pools of Federal Housing Administration ("FHA") insured or Veteran's
Administration ("VA") guaranteed mortgages. These guarantees, however, do not
apply to the market value or yield of mortgage pass-through securities. GNMA
securities are often purchased at a premium over the maturity value of the
underlying mortgages. This premium is not guaranteed and will be lost if
prepayment occurs.

Government-related guarantors (i.e., whose guarantees are not backed by the
full faith and credit of the U.S. Government) include FNMA and FHLMC. FNMA is
a government-sponsored corporation owned entirely by private stockholders. It
is subject to general regulation by the Secretary of Housing and Urban
Development. FNMA purchases conventional residential mortgages (i.e.,
mortgages not insured or guaranteed by any governmental agency) from a list of
approved seller/servicers which include state and federally-chartered savings
and loan associations, mutual savings banks, commercial banks, credit unions
and mortgage bankers. Pass-through securities issued by FNMA are guaranteed as
to timely payment by FNMA of principal and interest.

FHLMC was created by Congress in 1970 as a corporate instrumentality of the
U.S. Government for the purpose of increasing the availability of mortgage
credit for residential housing. FHLMC issues Participation Certificates
("PCs") which represent interests in conventional mortgages (i.e., not
federally insured or guaranteed) from FHLMC's national portfolio. FHLMC
guarantees timely payment of interest and ultimate collection of principal
regardless of the status of the underlying mortgage loans.

REPURCHASE AGREEMENTS: The Fund may enter into repurchase agreements only with
sellers who are primary reporting dealers that report to the Federal Reserve
Bank of New York and with the 100 largest U.S. commercial banks. The
securities that the Fund purchases and holds through its agent are Government
Securities, the values of which are equal to or greater than the repurchase
price agreed to be paid by the seller. The repurchase price may be higher than
the purchase price, the difference being income to the Fund, or the purchase
and repurchase prices may be the same, with interest at a standard rate due to
the Fund together with the repurchase price on repurchase. In either case, the
income to the Fund is unrelated to the interest rate on the Government
Securities.

   
The repurchase agreement provides that in the event the seller fails to pay
the amount agreed upon on the agreed upon delivery date or upon demand, as the
case may be, the Fund will have the right to liquidate the securites. If at
the time the Fund is contractually entitled to exercise its right to liquidate
the securities, the seller is subject to a proceeding under the bankruptcy
laws or its assets are otherwise subject to a stay order, the Fund's exercise
of its right to liquidate the securities may be delayed and result in certain
losses and costs to the Fund. The Fund has adopted and follows procedures
which are intended to minimize the risks of repurchase agreements. For
example, the Fund only enters into repurchase agreements after the Adviser has
determined that the seller is creditworthy, and the Adviser monitors that
seller's creditworthiness on an ongoing basis. Moreover, under such
agreements, the value of the securities (which are marked to market every
business day) is required to be greater than the repurchase price, and the
Fund has the right to make margin calls at any time if the value of the
securities falls below the agreed upon collateral.
    

"WHEN-ISSUED" SECURITIES: The Fund may purchase securities on a "when-issued"
or on a "forward delivery" basis. When the Fund commits to purchase Government
Securities on a "when-issued" or "forward delivery" basis, it will set up
procedures consistent with Securities and Exchange Commission ("SEC") policies
concerning such purchases. Since those policies currently recommend that an
amount of the Fund's assets equal to the amount of the purchase be held aside
or segregated to be used to pay for the commitment, the Fund will always have
liquid assets sufficient to cover any commitments or to limit any potential
risk. The Fund does not intend to make such purchases for speculative
purposes. The Fund will only make commitments to purchase securities on a
when-issued or delayed-delivery basis with the intention of actually acquiring
the securities. However, the Fund may sell these securities before the
settlement date if it is deemed advisable as a matter of investment strategy.
When the time comes to pay for when-issued or delayed-delivery securities, the
Fund will meet its obligations from then available cash flow or the sale of
securities, or, although it would not normally expect to do so, from the sale
of the when-issued or delayed-delivery securities themselves (which may have a
value greater or less than the Fund's payment obligation).

   
COLLATERALIZED MORTGAGE OBLIGATIONS AND MULTICLASS PASS-THROUGH
SECURITIES: The Fund may invest a portion of its assets in collateralized
mortgage obligations or "CMOs," which are debt obligations collateralized by
mortgage loans or mortgage pass-through securities. Collateral underlying CMOs
purchased by the Fund must be Government Securities. Typically, CMOs are
collateralized by certificates issued by GNMA, FNMA or FHLMC (such collateral
collectively hereinafter referred to as "Mortgage Assets"). The Fund may also
invest a portion of its assets in multiclass pass-through securities which are
interests in a trust composed of Mortgage Assets. In the case of the Fund,
these Mortgage Assets must be Government Securities. The Fund may only invest
in CMOs and multiclass pass-through securities which are issued or guaranteed
by the U.S. Government, its agencies, authorities or instrumentalities. Unless
the context indicates otherwise, all references herein to CMOs include
multiclass pass-through securities. Payments of principal of and interest on
the Mortgage Assets, and any reinvestment income thereon, provide the funds to
pay debt service on the CMOs or make scheduled distributions on the multiclass
pass-through securities.
    

In a CMO, a series of bonds or certificates is usually issued in multiple
classes. Each class of CMOs, often referred to as a "tranche," is issued at a
specific fixed or floating coupon rate and has a stated maturity or final
distribution date. Principal prepayments on the Mortgage Assets may cause the
CMOs to be retired substantially earlier than their stated maturities or final
distribution dates resulting in a loss of all or part of the premium if any
has been paid. Interest is paid or accrues on all classes of the CMOs on a
monthly, quarterly or semiannual basis. The principal of and interest on the
Mortgage Assets may be allocated among the several classes of a series of a
CMO in innumerable ways. In a common structure, payments of principal,
including any principal prepayments, on the Mortgage Assets are applied to the
classes of the series of a CMO in the order of their respective stated
maturities or final distribution dates, so that no payment of principal will
be made on any class of CMOs until all other classes having an earlier stated
maturity or final distribution date have been paid in full.

The Fund may also invest in parallel pay CMOs and Planned Amortization Class
CMOs ("PAC Bonds"). Parallel pay CMOs are structured to provide payments of
principal on each payment date to more than one class. These simultaneous
payments are taken into account in calculating the stated maturity date or
final distribution date of each class, which, as with other CMO structures,
must be retired by its stated maturity date or final distribution date but may
be retired earlier. PAC Bonds generally require payments of a specified amount
of principal on each payment date. PAC Bonds are always parallel pay CMOs with
the required principal payment on such securities having the highest priority
after interest has been paid to all classes.

   
LENDING OF PORTFOLIO SECURITIES: The Fund may seek to increase its income by
lending portfolio securities. Such loans usually are made only to member banks
of the Federal Reserve System and to member firms (and subsidiaries thereof)
of the New York Stock Exchange (the "Exchange"), and are secured continuously
by collateral in cash, U.S. Government Securities or an irrevocable letter of
credit maintained on a current basis at an amount at least equal to the market
value of the securities loaned. The Fund would have the right to call a loan
and obtain the securities loaned at any time on customary industry settlement
notice (which will not usually exceed five days). During the existence of a
loan, the Fund would continue to receive the equivalent of the interest paid
by the issuer on the securities loaned. The Fund would also receive a fee from
the borrower or compensation based on investment of cash collateral, less a
fee paid to the borrower, if the collateral is in the form of cash. The Fund
would not, however, have the right to vote any securities having voting rights
during the existence of the loan, but would call the loan in anticipation of
an important vote to be taken among holders of the securities or of the giving
or withholding of their consent on a material matter affecting the investment.
As with other extensions of credit, there are risks of delay in recovery or
even loss of rights in the collateral should the borrower of the securities
fail financially. However, the loans would be made only to firms deemed by the
Adviser to be of good standing, and when, in the judgment of the Adviser, the
consideration which could be earned currently from securities loans of this
type justifies the attendant risk.  If the Adviser determines to make
securities loans, it is not intended that the value of the securities loaned
would exceed 30% of the value of the Fund's total assets.
    

                               ----------------

PORTFOLIO TRADING: The Fund intends to fully manage its portfolio by buying
and selling Government Securities, as well as holding selected obligations to
maturity. In managing its portfolio the Fund seeks to take advantage of market
developments and yield disparities, which may include use of the following
strategies:

    (1) selling one type of Government Security (e.g., Treasury bonds) and
  buying another (e.g., GNMA direct pass-through certificates) when
  disparities arise in the relative values of each; and

    (2) changing from one Government Security to an essentially similar
  Government Security when their respective yields are distorted due to market
  factors.

The Fund will also use the techniques described above under "Repurchase
Agreements" and " "When-Issued" Securities" to manage its portfolio.

These strategies may result in increases or decreases in the Fund's current
income available for distribution to the Fund's shareholders and in the
holding by the Fund of obligations which sell at moderate to substantial
premiums or discounts from face value. Moreover, if the Fund's expectations of
changes in interest rates or its evaluation of the normal yield relationship
between two obligations proves to be incorrect, the Fund's income, net asset
value per share and potential capital gain may be decreased or its potential
capital loss may be increased.

The Fund will engage in portfolio trading if it believes a transaction net of
costs (including custodian charges) will help in attaining its investment
objective. See "Portfolio Transactions and Brokerage Commissions."

The objective and the policies described above may be changed without
shareholder approval.

INVESTMENT RESTRICTIONS. The Fund has adopted the following restrictions which
cannot be changed without the approval of the holders of a majority of its
shares (which, as used in this SAI, means the lesser of (i) more than 50% of
the outstanding shares of the Fund (or a class, as applicable) or (ii) 67% or
more of the outstanding shares of the Fund (or a class, as applicable) present
at a meeting if holders of more than 50% of the outstanding shares of the Fund
(or a class, as applicable) are represented at such meeting in person or by
proxy):

The Fund may not:

    (1) borrow money or pledge, mortgage or hypothecate in excess of  1/3 of
  its assets, and then only as a temporary measure for extraordinary or
  emergency purposes or except as contemplated by clause (6) below (the Fund
  intends to borrow money only from banks and only to accommodate requests for
  the repurchase of shares of the Fund while effecting an orderly liquidation
  of portfolio securities) (for the purpose of this restriction, collateral
  arrangements with respect to options, Futures Contracts, Options on Futures
  Contracts and collateral arrangements with respect to initial and variation
  margins are not considered a pledge of assets);

    (2) purchase any security or evidence of interest therein on margin,
  except that the Fund may obtain such short-term credit as may be necessary
  for the clearance of purchases and sales of securities and except that the
  Fund may make deposits on margin in connection with Futures Contracts and
  related options;

    (3) write, purchase or sell any put or call option or any combination
  thereof, provided that this shall not prevent the writing, purchasing and
  selling of puts, calls or combinations thereof with respect to Government
  Securities and with respect to Futures Contracts or the purchase, ownership,
  holding or sale of contracts for the future delivery of fixed income
  securities;

    (4) underwrite securities issued by other persons except insofar as the
  Fund may technically be deemed an underwriter under the Securities Act of
  1933 in selling a portfolio security;

    (5) purchase or sell commodities or commodity contracts, except that the
  Fund may purchase and sell Futures Contracts and related options;

    (6) make short sales of securities or maintain a short position, unless at
  all times when a short position is open it owns an equal amount of such
  securities or securities convertible into or exchangeable for, without
  payment of any further consideration, securities of the same issue as, and
  equal in amount to, the securities sold short, and unless not more than 10%
  of the Fund's total assets (taken at market value) is held as collateral for
  such sales at any one time (it is the present intention of management to
  make such sales only for the purpose of deferring realization of gain or
  loss for Federal income tax purposes; such sales would not be made of
  securities subject to outstanding options);

    (7) make loans to other persons except through the lending of its
  portfolio securities not in excess of 30% of its total assets (taken at
  market value) and except through the use of repurchase agreements (for these
  purposes the purchase of all or a portion of an issue of debt securities in
  accordance with the Fund's investment objective and policies shall not be
  considered the making of a loan);

    (8) purchase securities of any issuer if such purchase at the time thereof
  would cause more than 10% of the voting securities of such issuer to be held
  by the Fund;

    (9) purchase securities of any issuer if such purchase at the time thereof
  would cause more than 5% of the Fund's assets (taken at market value) to be
  invested in the securities of such issuer (other than securities or
  obligations issued or guaranteed by the United States, any state or
  political subdivision thereof, or any political subdivision of any such
  state, or any agency or instrumentality of the United States or of any state
  or of any political subdivision of any state or the United States); or

    (10) issue any senior security (as that term is defined in the Investment
  Company Act of 1940 (the "1940 Act")), if such issuance is specifically
  prohibited by the 1940 Act or the rules and regulations promulgated
  thereunder (for the purpose of this restriction, collateral arrangements
  with respect to options, Futures Contracts and Options on Futures Contracts
  and collateral arrangements with respect to initial and variation margin are
  not deemed to be the issuance of a senior security).

The Fund has also adopted a policy which is fundamental and which provides
that the Fund's assets will be invested in Government Securities and related
repurchase agreements.

The Fund has also adopted the following policies which are not fundamental and
which may be changed without shareholder approval. The Fund will not knowingly
invest in securities which are restricted securities under the Securities Act
of 1933, unless the Board of Trustees has determined that such securities are
liquid based upon trading markets for the specific security, if, as a result
thereof, more than 15% of the Fund's total assets (taken at market value)
would be so invested. The Fund will also not invest more than 10% of its
assets in repurchase agreements maturing in more than seven days.

STATE AND FEDERAL RESTRICTIONS: In order to comply with certain state and
federal statutes and policies, the Fund will not, as a matter of operating
policy, (i) invest more than 5% of its total assets at the time of investment
in companies which, including predecessors, have a record of less than three
years' continuous operation, (ii) purchase or retain in its portfolio any
securities issued by an issuer any of whose officers, directors, trustees or
security holders is an officer or Trustee of the Fund, or is an officer or
Director of the Adviser if, after the purchase of the securities of such
issuer by the Fund, one or more of such persons owns beneficially more than
1/2 of 1% of the shares or securities, or both, of such issuer and such
persons owning more than  1/2 of 1% of such shares or securities together own
beneficially more than 5% of such shares or securities, or both, (iii) invest
for the purpose of exercising control or management, (iv) purchase securities
issued by any registered investment company except by purchase in the open
market where no commission or profit to a sponsor or dealer results from such
purchase other than the customary broker's commission, or except when such
purchase, though not made in the open market, is part of a plan of merger or
consolidation; provided, however, that the Fund shall not purchase the
securities of any registered investment company if such purchase at the time
thereof would cause more than 10% of the total assets of the Fund (taken at
market value) to be invested in the securities of such issuers or would cause
more than 3% of the outstanding voting securities of any such issuer to be
held by the Fund and, provided further, that the Fund shall not purchase
securities issued by any open-end investment company, or (v) invest more than
10% of its assets (taken at market value) in securities (including repurchase
agreements maturing in more than seven days) for which there are no readily
available market quotations. These policies are not fundamental and may be
changed by the Fund without shareholder approval in response to changes in the
various state and federal requirements.

   
APPLICABLITY OF RESTRICTIONS: Except with respect to Investment Restriction
(1), and the Fund's nonfundamental restriction regarding illiquid securities,
these investment restrictions are adhered to at the time of purchase or
utilization of assets; a subsequent change in circumstances will not be
considered to result in a violation of policy.
    

3.  MANAGEMENT OF THE FUND
The Fund's Board of Trustees provides broad supervision over the affairs of
the Fund. The Adviser is responsible for the investment management of the
Fund's assets, and the officers of the Fund are responsible for its
operations. The Trustees and officers are listed below, together with their
principal occupations during the past five years. (Their titles may have
varied during that period.)

TRUSTEES
   
RICHARD B. BAILEY* (born 9/14/26)
Private Investor; Massachusetts Financial Services Company, former Chairman
  (prior to September 30, 1991); Cambridge Bancorp, Director; Cambridge Trust
  Company, Director
    
MARSHALL N. COHAN (born 11/14/26)
Private Investor
Address: 2524 Bedford Mews Drive, Wellington, Florida
LAWRENCE H. COHN, M.D. (born 3/11/37)
Brigham and Women's Hospital, Chief of Cardiac Surgery; Harvard Medical
  School, Professor of Surgery
Address: 75 Francis Street, Boston, Massachusetts
   
THE HON. SIR J. DAVID GIBBONS, KBE (born 6/15/27)
Edmund Gibbons Limited, Chief Executive Officer; Colonial Insurance Company
  Ltd., The Bank of N.T. Butterfield & Son Ltd., Chairman; (prior to November,
  1997).
Address: 21 Reid Street, Hamilton, Bermuda
    
ABBY M. O'NEILL (born 4/27/28)
Private Investor; Rockefeller Financial Services, Inc. (investment advisers),
  Director
Address: Room 5600, 30 Rockefeller Plaza, New York, New York

WALTER E. ROBB, III (born 8/18/26)
Benchmark Advisors, Inc. (corporate financial consultants), President and
  Treasurer; Benchmark Consulting Group, Inc. (office services), President;
  Landmark Funds (mutual fund), Trustee
Address: 110 Broad Street, Boston, Massachusetts

ARNOLD D. SCOTT* (born 12/16/42)
Massachusetts Financial Services Company, Senior Executive Vice President and
  Secretary
   
JEFFREY L. SHAMES* (born 6/2/55)
Massachusetts Financial Services Company, Chairman, Chief Executive Officer
  and President
    
J. DALE SHERRATT (born 9/23/38)
Insight Resources, Inc. (acquisition planning specialists), President
Address: One Liberty Square, Boston, Massachusetts
WARD SMITH (born 9/13/30)
   
NACCO Industries (holding company), Chairman (prior to June, 1994); Sundstrand
  Corporation (diversified mechanical manufacturer), Director
Address: 36080 Shaker Blvd., Hunting Valley, Ohio
    

OFFICERS
W. THOMAS LONDON,* Treasurer (born 3/1/44)
Massachusetts Financial Services Company, Senior Vice President
STEPHEN E. CAVAN,* Secretary and Clerk (born 11/6/53)
Massachusetts Financial Services Company, Senior Vice President, General
  Counsel and Assistant Secretary
JAMES R. BORDEWICK, JR.,* Assistant Secretary (born 3/6/59)
Massachusetts Financial Services Company, Vice President and Associate General
  Counsel
JAMES O. YOST,* Assistant Treasurer (born 6/12/60)
Massachusetts Financial Services Company, Vice President
   
ELLEN MOYNIHAN,* Assistant Treasurer (born 11/13/57)
Massachusetts Financial Services Company, Vice President (since September,
  1996); Deloitte & Touche LLP, Senior Manager (until September 1996)
MARK E. BRADLEY,* Assistant Treasurer (born 11/23/59)
Massachusetts Financial Services Company, Vice President (since March, 1997);
  Putnam Investments, Vice President (from September 1994 until March 1997);
  Ernst & Young, Senior Tax Manager (until September 1994)
    

- ------------
*" Interested persons" (as defined in the Investment Company Act of 1940 (the
   "1940 Act")) of the Adviser, whose address is 500 Boylston Street, Boston,
   Massachusetts 02116.

   
Each Trustee and officer holds comparable positions with certain MFS
affiliates or with certain other funds of which MFS or a subsidiary of MFS is
the investment adviser or distributor. Messrs. Shames and Scott, Directors of
MFD, and Mr. Cavan, the Secretary of MFD, hold similar positions with certain
other MFS affiliates. Mr. Bailey is a Director of Sun Life Assurance Company
of Canada (U.S.), a subsidiary of Sun Life Assurance Company of Canada ("Sun
Life").

The Fund pays the compensation of non-interested Trustees and Mr. Bailey (who
currently receive a fee of $1,250 per year plus $225 per meeting and $225 per
committee meeting attended together with such Trustees' out-of-pocket
expenses). The Fund has adopted a retirement plan for non-interested Trustees
and Mr. Bailey. Under this plan, a Trustee will retire upon reaching age 75
and if the Trustee has completed at least five years of service, he would be
entitled to annual payments during his lifetime of up to 50% of such Trustee's
average annual compensation (based on the three years prior to his retirement)
depending on his length of service. A Trustee may also retire prior to age 75
and receive reduced payments if he has completed at least five years of
service. Under the plan, a Trustee (or his beneficiaries) will also receive
benefits for a period of time in the event the Trustee is disabled or dies.
These benefits will also be based on the Trustee's average annual compensation
and length of service. There is no retirement plan provided by the Fund for
Messrs. Scott or Shames. The Fund will accrue compensation expenses each year
to cover current year's service and amortize past service cost.
    

Set forth below is certain information concerning the cash compensation paid
to the Trustees and benefits accrued, and estimated benefits payable, under
the retirement plan.

TRUSTEE COMPENSATION TABLE

   
                                    RETIREMENT
                                     BENEFIT                   TOTAL TRUSTEE
                                    ACCRUED AS     ESTIMATED   FEES FROM FUND
                     TRUSTEE FEES  PART OF FUND  CREDITED YEARS   AND FUND
TRUSTEE              FROM FUND(1)   EXPENSE(1)   OF SERVICE(2)   COMPLEX(3)
- -----------------------------------------------------------------------------
Richard B. Bailey       $3,725        $1,027           10        $242,022
Marshall N. Cohan        4,400         2,125           14         148,067
Dr. Lawrence Cohn        3,500           745           18         123,917
Sir David Gibbons        3,725         1,676           13         129,842
Abby M. O'Neill          4,400           837           10         129,842
Walter E. Robb, III      4,400         2,125           17         148,067
Arnold D. Scott          --0--         --0--          N/A          --0--
Jeffrey L. Shames        --0--         --0--          N/A          --0--
J. Dale Sherratt         5,750           850           20         184,067
Ward Smith               5,750         1,062           13         184,067

- ----------
(1) For fiscal year ended December 31, 1997.
(2) Based on normal retirement age of 75. See the table below for the
    estimated annual benefits payable upon retirement by the Fund to a Trustee
    based on his or her estimated years of service.
(3) Information provided is provided for calendar year 1997. All Trustees
    receiving compensation served as Trustees of 42 funds within the MFS fund
    complex (having aggregate net assets at December 31, 1997, of
    approximately $18.9 billion) except Mr. Bailey, who served as Trustee of
    69 funds within the MFS fund complex (having aggregate net assets at
    December 31, 1997, of approximately $47.8 billion).
    

ESTIMATED ANNUAL BENEFITS PAYABLE BY FUND UPON RETIREMENT(4)

   
                                                  YEARS OF SERVICE
                             ---------------------------------------------------
   AVERAGE TRUSTEE FEES          3            5             7         10 OR MORE
- --------------------------------------------------------------------------------
         $3,150                $473        $  788        $1,103         $1,575
          3,785                 568           946         1,325          1,893
          4,420                 663         1,105         1,547          2,210
          5,055                 758         1,264         1,769          2,528
          5,690                 854         1,423         1,992          2,845
          6,325                 949         1,581         2,214          3,163
    

- -----------
(4) Other funds in the MFS fund complex provide similar retirement benefits to
    the Trustees.

   
As of March 31, 1998, all officers and Trustees as a group owned less than 1%
of the outstanding shares of the Fund.

As of March 31, 1998, Merrill Lynch, Pierce, Fenner and Smith Inc., Attention:
Fund Administration, 4800 Deer Lake Drive East, 3rd Floor, Jacksonville,
Florida 32246-6484 was the record owner of approximately 5.04% and 15.65% of
the outstanding Class A and Class B shares, respectively, of the Fund. As of
March 31, 1998, BHC Securities, Inc. FAO 70711520, Attn: Mutual Funds Dept.,
One Commerce Square, 2005 Market Street, Suite 1200, Philadelphia, PA
19103-7042, Randolph Telephone Membership Corp., 3733 Old Cox Road, Asheboro,
NC 27203-1517 and Merrill Lynch, Pierce, Fenner and Smith Inc., Attention:
Fund Administration, 4800 Deer Lake Drive East, 3rd Floor, Jacksonville,
Florida 32246-6484 were the record owners of approximately 9.99%, 8.55% and
14.68%, respectively, of the outstanding Class C Shares of the Fund. As of
March 31, 1998, MFS Defined Contribution Plan, c/o Mark Leary, Massachusetts
Financial Services, 500 Boylston Street, Boston, MA 02116-3740 was the record
owner of approximately 99.94% of the outstanding Class I Shares of the Fund.
    

The Fund's Declaration of Trust provides that it will indemnify its Trustees
and officers against liabilities and expenses incurred in connection with
litigation in which they may be involved because of their offices with the
Fund, unless, as to liabilities to the Fund or its shareholders, it is finally
adjudicated that they engaged in willful misfeasance, bad faith, gross
negligence or reckless disregard of the duties involved in their offices, or
with respect to any matter, unless it is adjudicated that they did not act in
good faith in the reasonable belief that their actions were in the best
interest of the Fund. In the case of settlement, such indemnification will not
be provided unless it has been determined pursuant to the Declaration of
Trust, that such officers or Trustees have not engaged in willful misfeasance,
bad faith, gross negligence or reckless disregard of their duties.

   
INVESTMENT ADVISER
MFS and its predecessor organizations have a history of money management
dating from 1924. MFS is a subsidiary of Sun Life of Canada (U.S. Financial
Services Holdings, Inc.), which in turn is an indirect wholly owned subsidiary
of Sun Life. The Prospectus contains information with respect to the
management of the Adviser and other investment companies for which MFS serves
as investment adviser.

The Adviser manages the assets of the Fund pursuant to an Investment Advisory
Agreement, dated August 10, 1988, as amended (the "Advisory Agreement"). Under
the Advisory Agreement, the Adviser provides the Fund with overall investment
advisory services. Subject to such policies as the Trustees may determine, the
Adviser makes investment decisions for the Fund. For its services and
facilities, the Adviser receives a management fee equal to the lesser of (i)
0.40% of the Fund's average daily net assets or (ii) 0.38% of the Fund's
average daily net assets plus 5.36% of the Fund's gross income (i.e., income
other than from the sale of securities, and short term gains from futures
transactions), in each case on an annualized basis for the Fund's then-current
fiscal year. For the fiscal years ended December 31, 1997, 1996 and 1995, MFS
received management fees of $1,022,868, $1,185,293 and $1,145,992,
respectively, equivalent on an annualized basis to 0.40% of the Fund's average
daily net assets under the Advisory Agreement.

The Fund pays all of its expenses (other than those assumed by the Adviser or
MFD), including: Trustee fees (discussed above); governmental fees; interest
charges; taxes; membership dues in the Investment Company Institute allocable
to the Fund; fees and expenses of independent accountants, of legal counsel,
and of any transfer agent, registrar and dividend disbursing agent of the
Fund; expenses of repurchasing and redeeming shares; expenses of preparing,
printing and mailing share certificates, shareholder reports, notices, proxy
statements to shareholders and reports to governmental officers and
commissions; brokerage and other expenses connected with the execution,
recording and settlement of portfolio security transactions; insurance
premiums; fees and expenses of State Street Bank and Trust Company, the Fund's
Custodian, for all services to the Fund, including safekeeping of funds and
securities and maintaining required books and accounts; expenses of
calculating the net asset value of shares of the Fund; and expenses of
shareholder meetings. Expenses relating to the issuance, registration and
qualification of shares of the Fund and the preparation, printing and mailing
of prospectuses for such purposes are borne by the Fund except that its
Distribution Agreement with MFD, the Fund's principal underwriter, requires
MFD to pay for prospectuses that are to be used for sales purposes. For a list
of the Fund's expenses, including the compensation paid to the Trustees who
are not officers of MFS, during its fiscal year ended December 31, 1997 see
"Financial Statements -- Statement of Operations" in the Annual Report to
shareholders. Payment by the Fund of brokerage commission for brokerage and
research services of value to the Adviser in serving its clients is discussed
under the caption "Portfolio Transactions and Brokerage Commissions" below.

The Adviser pays the compensation of the Fund's officers and of any Trustee
who is an officer of MFS. The Adviser also furnishes at its own expense all
necessary administrative services, including office space, equipment, clerical
personnel, investment advisory facilities, and all executive and supervisory
personnel necessary for managing the Fund's investments, effecting the Fund's
portfolio transactions.

The Advisory Agreement will remain in effect until August 1, 1998, and will
continue in effect thereafter only if such continuance is specifically
approved at least annually by the Board of Trustees or by vote of a majority
of the Fund's shares (as defined in "Investment Objective, Policies and
Restrictions -- Investment Restrictions" above) and, in either case, by a
majority of the Trustees who are not parties to the Advisory Agreement or
interested persons of any such party. The Advisory Agreement terminates
automatically if it is assigned and may be terminated without penalty by vote
of a majority of the Fund's outstanding voting securities (as defined in
"Investment Objective, Policies and Restrictions -- Investment Restrictions")
or by either party on not more than 60 days' nor less than 30 days' written
notice. The Advisory Agreement further provides that MFS may render services
to others and may permit fund clients in addition to the Fund to use the
initials "MFS" in their names. The Advisory Agreement also provides that
neither the Adviser nor its personnel shall be liable for any error of
judgment or mistake of law or for any loss arising out of any investment or
for any act or omission in the execution and management of the Fund, except
for willful misfeasance, bad faith or gross negligence in the performance of
its or their duties or by reason of reckless disregard of its or their
obligations and duties under the Advisory Agreement.

ADMINISTRATOR
MFS provides the Fund with certain financial, legal, compliance, shareholder
communications and other administrative services pursuant to a Master
Administrative Services Agreement dated March 1, 1997, as amended. Under this
Agreement, the Fund pays MFS an administrative fee of up to 0.015% per annum
of the Fund's average daily net assets. This fee reimburses MFS for a portion
of the costs it incurs to provide such services. For the period commencing
March 1, 1997 through the period ended December 31, 1997, MFS received $29,635
under the Agreement.

CUSTODIAN
State Street Bank and Trust Company (the "Custodian") is the custodian of the
Fund's assets. The Custodian's responsibilities include safekeeping and
controlling the Fund's cash and securities, handling the receipt and delivery
of securities, determining income and collecting interest on the Fund's
investments, maintaining books of original entry for portfolio and fund
accounting and other required books and accounts, and calculating the daily
net asset value of each class of shares of the Fund. The Custodian does not
determine the investment policies of the Fund or decide which securities the
Fund will buy or sell. The Fund may, however, invest in securities, including
repurchase agreements, issued by the Custodian and may deal with the Custodian
as principal in securities transactions. The Custodian also acts as the
dividend disbursing agent of the Fund.

SHAREHOLDER SERVICING AGENT
MFS Service Center, Inc. (the "Shareholder Servicing Agent"), a wholly owned
subsidiary of MFS, is the Fund's shareholder servicing agent, pursuant to a
Shareholder Servicing Agreement, dated August 10, 1988 as amended (the "Agency
Agreement") with the Fund. The Shareholder Servicing Agent's responsibilities
under the Agency Agreement include administering and performing transfer agent
functions and the keeping of records in connection with the issuance, transfer
and redemption of each class of shares of the Fund. For these services, the
Shareholder Servicing Agent will receive a fee calculated as a percentage of
the average daily net assets of the Fund at an effective annual rate of
0.1125% attributable to Class A, Class B and Class C shares, respectively. In
addition, the Shareholder Servicing Agent will be reimbursed by the Fund for
certain expenses incurred by the Shareholder Servicing Agent on behalf of the
Fund. State Street Bank and Trust Company, the dividend and distribution
disbursing agent of the Fund, has contracted with the Shareholder Servicing
Agent to administer and perform certain dividend disbursing agent functions
for the Fund.
    

DISTRIBUTOR
MFD, a wholly owned subsidiary of MFS, serves as distributor for the
continuous offering of shares of the Fund pursuant to a Distribution
Agreement, dated January 1, 1995 (the "Distribution Agreement") with the Fund.
Prior to January 1, 1995, MFS Financial Services, Inc. ("FSI"), another wholly
owned subsidiary of MFS, was the Fund's distributor. Where this SAI refers to
MFD in relation to the receipt or payment of money with respect to a period or
periods prior to January 1, 1995, such reference shall be deemed to include
FSI, as the predecessor in interest to MFD.

CLASS A SHARES: MFD acts as agent in selling Class A shares of the Fund to
dealers. The public offering price of Class A shares of the Fund is their net
asset value next computed after the sale plus a sales charge which varies
based upon the quantity purchased. The public offering price of Class A shares
of the Fund is calculated by dividing net asset value of a Class A share by
the difference (expressed as a decimal) between 100% and the sales charge
percentage of offering price applicable to the purchase (see "Purchases" in
the Prospectus). The sales charge scale set forth in the Prospectus applies to
purchases of Class A shares of the Fund alone or in combination with shares of
all classes of certain other funds in the MFS Family of Funds (the "MFS
Funds") and other Funds (as noted under Right of Accumulation) by any person,
including members of a family unit (e.g., husband, wife and minor children)
and bona fide trustees, and also applies to purchases made under the Right of
Accumulation or a Letter of Intent (see "Investment and Withdrawal Programs"
below). A group might qualify  to obtain quantity sales charge discounts (see
"Investment and Withdrawal Programs" in this SAI).

Class A shares of the Fund may be sold at their net asset value to certain
persons or in certain instances as described in the Prospectus. Such sales are
made without a sales charge to promote good will with employees and others
with whom MFS, MFD and/or the Fund have business relationships, and because
the sales effort, if any, involved in making such sales is negligible.

MFD allows discounts to dealers (which are alike for all dealers) from the
applicable public offering price of the Class A shares. Dealer allowances
expressed as a percentage of offering price for all offering prices are set
forth in the Prospectus (see "Purchases" in the Prospectus). The difference
between the total amount invested and the sum of (a) the net proceeds to the
Fund and (b) the dealer commission, is the commission paid to the distributor.
Because of rounding in the computation of offering price, the portion of the
sales charge paid to the distributor may vary and the total sales charge may
be more or less than the sales charge calculated using the sales charge
expressed as a percentage of offering price or as a percentage of the net
amount invested as listed in the Prospectus. In the case of the maximum sales
charge, the dealer retains 2 1/4% and MFD retains approximately  1/4 of 1% of
the public offering price. In addition, MFD pays a commission to dealers who
initiate and are responsible for purchases of $1 million or more as described
in the Prospectus.

CLASS B SHARES, CLASS C SHARES AND CLASS I SHARES: MFD acts as agent in
selling Class B shares, Class C shares and Class I shares to dealers. The
public offering price of Class B shares, Class C shares and Class I shares is
their net asset value next computed after the sale (see "Purchases" in the
Prospectus and the Prospectus Supplement to which Class I shares are offered).

GENERAL: On occasion, MFD may obtain brokers loans from various banks,
including the custodian banks for the MFS Funds, to facilitate the settlement
of sales of shares of the Fund to dealers. MFD may benefit from its temporary
holding of funds paid to it by investment dealers for the purchase of Fund
shares. Neither MFD nor dealers are permitted to delay placing orders to
benefit themselves by a price change.

   
During the fiscal year ended December 31, 1997, MFD received sales charges of
$18,543 and dealers received sales charges of $202,518 (as their concession on
gross sales charges of $221,061) for selling Class A shares of the Fund; the
Fund received $39,701,348 representing the aggregate net asset value of such
shares. During the Fund's fiscal year ended December 31, 1996, MFD received
sales charges of $27,345 and dealers received sales charges of $233,785 (as
their concession on gross sales charges of $261,130) for selling Class A
shares of the Fund; the Fund received $46,464,713 representing the aggregate
net asset value of such shares. During the Fund's fiscal year ended December
31, 1995, MFD received sales charges of $29,605 and dealers received sales
charges of $325,395 (as their concession on gross sales of $355,000) for
selling Class A shares of the Fund; the Fund received $56,232,743 representing
the aggregate net asset value of such shares.

For the fiscal years ended December 31, 1997, 1996 and 1995, the contingent
deferred sales charges ("CDSC") imposed on redemption of Class A shares were
$13,630, $6,765 and $22,488, respectively. For the fiscal years ended December
31, 1997, 1996 and 1995, the CDSC imposed on redemption of Class B shares was
$120,249, $131,522 and $121,288, respectively. For the fiscal years ended
December 31, 1997 and 1996, the CDSC imposed on redemption of Class C shares
was $37,614 and $2,718, respectively.

The Distribution Agreement will remain in effect until August 1, 1998, and
will continue in effect thereafter only if such continuance is specifically
approved at least annually by the Board of Trustees or by vote of a majority
of the Fund's shares and, in either case, by a majority of the Trustees who
are not parties to the Distribution Agreement or interested persons of any
such party. The Distribution Agreement terminates automatically if it is
assigned and may be terminated without penalty by either party on not more
than 60 days' nor less than 30 days' notice.
    

4.  PORTFOLIO TRANSACTIONS AND BROKERAGE
    COMMISSIONS
Specific decisions to purchase or sell securities for the Fund are made by a
portfolio manager who is an employee of the Adviser and who is appointed and
supervised by its senior officers. Changes in the Fund's investments are
reviewed by the Board of Trustees. The Fund's portfolio manager may serve
other clients of the Adviser or any subsidiary of the Adviser in a similar
capacity.

The primary consideration in placing portfolio security transactions is
execution at the most favorable prices. The Adviser has complete freedom as to
the markets in and broker-dealers through which it seeks this result.
Government Securities are traded principally in the over-the-counter market on
a net basis through dealers acting for their own account and not as brokers.
The cost of securities purchased from underwriters includes an underwriter's
commission or concession, and the prices at which securities are purchased and
sold from and to dealers include a dealer's mark-up or mark-down. The Adviser
attempts to negotiate with underwriters to decrease the commission or
concession for the benefit of the Fund. The Adviser normally seeks to deal
directly with the primary market makers unless, in its opinion, better prices
are available elsewhere. Securities firms may receive brokerage commissions on
transactions involving options, Futures Contracts and Options on Futures
Contracts and the purchase and sale of underlying securities upon exercise of
options. The brokerage commissions associated with buying and selling options
may be proportionately higher than those associated with general securities
transactions. Subject to the requirement of seeking execution at the most
favorable price, securities may, as authorized by the Advisory Agreement, be
bought from or sold to dealers who have furnished statistical, research and
other information or services to the Adviser. At present no arrangements for
the recapture of commission payments are in effect.

Consistent with the foregoing primary consideration, the Conduct Rules of the
National Association of Securities Dealers, Inc. (the "NASD") and such other
policies as the Trustees may determine, the Adviser may consider sales of
shares of the Fund and of the other investment company clients of MFD as a
factor in the selection of broker-dealers to execute the Fund's portfolio
transactions.

   
For the fiscal year ended December 31, 1997, the Fund did not acquire
securities issued by regular broker-dealers of the Fund.

In certain instances there may be securities which are suitable for the Fund's
portfolio as well as for that of one or more of the other clients of the
Adviser or any subsidiary of the Adviser. Investment decisions for the Fund
and for such other clients are made with a view to achieving their respective
investment objectives. It may develop that a particular security is bought or
sold for only one client even though it might be held by, or bought or sold
for, other clients. Likewise, a particular security may be bought for one or
more clients when one or more other clients are selling that same security.
Some simultaneous transactions are inevitable when several clients receive
investment advice from the same investment adviser, particularly when the same
security is suitable for the investment objectives of more than one client.
When two or more clients are simultaneously engaged in the purchase or sale of
the same security, the securities are allocated among clients in a manner
believed by the Adviser to be equitable to each. It is recognized that in some
cases this system could have a detrimental effect on the price or volume of
the security as far as the Fund is concerned. In some cases, however, the Fund
believes that its ability to participate in volume transactions will produce
better executions for the Fund.
    

5.  SHAREHOLDER SERVICES
INVESTMENT AND WITHDRAWAL PROGRAMS -- The Fund makes available the following
programs designed to enable shareholders to add to their investment or
withdraw from it with a minimum of paper work. These are described below and
in certain cases, in the Prospectus. The programs involve no extra charge to
shareholders (other than a sales charge in the case of certain Class A share
purchases) and may be changed or discontinued at any time by a shareholder or
the Fund.

  LETTER OF INTENT: If a shareholder (other than a group purchaser described
below) anticipates purchasing $50,000 or more of Class A shares of the Fund
alone or in combination with shares of Class B or Class C of the Fund or any
of the classes of other MFS Funds or MFS Fixed Fund (a bank collective
investment fund) within a 13-month period (or 36-month period, in the case of
purchases of $1 million or more), the shareholder may obtain Class A shares of
the Fund at the same reduced sales charge as though the total quantity were
invested in one lump sum by completing the Letter of Intent section of the
Account Application or filing a separate Letter of Intent application
(available from the Shareholder Servicing Agent) within 90 days of the
commencement of purchases. Subject to acceptance by MFD and the conditions
mentioned below, each purchase will be made at a public offering price
applicable to a single transaction of the dollar amount specified in the
Letter of Intent application. The shareholder or his dealer must inform MFD
that the Letter of Intent is in effect each time shares are purchased. The
shareholder makes no commitment to purchase additional shares, but if his
purchases within 13 months (or 36 months in the case of purchases of $1
million or more) plus the value of shares credited toward completion of the
Letter of Intent do not total the sum specified, he will pay the increased
amount of the sales charge as described below. Instructions for issuance of
shares in the name of a person other than the person signing the Letter of
Intent application must be accompanied by a written statement from the dealer
stating that the shares were paid for by the person signing such Letter.
Neither income dividends nor capital gain distributions taken in additional
shares will apply toward the completion of the Letter of Intent. Dividends and
distributions of other MFS Funds automatically reinvested in shares of the
Fund pursuant to the Distribution Investment Program also will not apply
toward completion of the Letter of Intent.

Out of the shareholder's initial purchase (or subsequent purchases if
necessary), 5% of the dollar amount specified in the Letter of Intent
application shall be held in escrow by the Shareholder Servicing Agent in the
form of shares registered in the shareholder's name. All income dividends and
capital gain distributions on escrowed shares will be paid to the shareholder
or to his order. When the minimum investment so specified is completed (either
prior to or by the end of the 13-month period or 36-month period, as
applicable), the shareholder will be notified and the escrowed shares will be
released.

If the intended investment is not completed, the Shareholder Servicing Agent
will redeem an appropriate number of the escrowed shares in order to realize
such difference. Shares remaining after any such redemption will be released
by the Shareholder Servicing Agent. By completing and signing the Account
Application or separate Letter of Intent application, the shareholder
irrevocably appoints the Shareholder Servicing Agent his attorney to surrender
for redemption any or all escrowed shares with full power of substitution in
the premises.

  RIGHT OF ACCUMULATION: A shareholder qualifies for cumulative quantity
discounts on the purchase of Class A shares when that shareholder's new
investment, together with the current offering price value of all holdings of
Class A, B and C shares of that shareholder in the MFS Funds or the MFS Fixed
Fund (a bank collective investment fund) reaches a discount level. See
"Purchases" in the Prospectus for the sales charges on quantity discounts. For
example, if a shareholder owns shares with a current offering price value of
$25,000 and purchases an additional $25,000 of Class A shares of the Fund, the
sales charge for the $25,000 purchase would be at the rate of 2.25% (the rate
applicable to single transactions of $50,000). A shareholder must provide the
Shareholder Servicing Agent (or his investment dealer must provide MFD) with
information to verify that the quantity sales charge discount is applicable at
the time the investment is made.

SUBSEQUENT INVESTMENT BY TELEPHONE: Each shareholder may purchase additional
shares of any MFS Fund by telephoning the Shareholder Servicing Agent toll-
free at (800) 225-2606. The minimum purchase amount is $50 and the maximum
purchase amount is $100,000. Shareholders wishing to avail themselves of this
telephone purchase privilege must so elect on their Account Application and
designate thereon a bank and account number from which purchases will be made.
If a telephone purchase request is received by the Shareholder Servicing Agent
on any business day prior to the close of regular trading on the Exchange
(generally, 4:00 p.m., Eastern time), the purchase will occur at the closing
net asset value of the shares purchased on that day. The Shareholder Servicing
Agent may be liable for any losses resulting from unauthorized telephone
transactions if it does not follow reasonable procedures designed to verify
the identity of the caller. The Shareholder Servicing Agent will request
personal or other information from the caller, and will normally also record
calls. Shareholders should verify the accuracy of confirmation statements
immediately after their receipt.

  DISTRIBUTION INVESTMENT PROGRAM: Distributions of dividends and capital
gains made by the Fund with respect to a particular class of shares may be
automatically invested in shares of the same class of one of the other MFS
Funds if shares of the fund are available for sale. Such investments will be
subject to additional purchase minimums. Distributions will be invested at net
asset value (exclusive of any sales charge) and will not be subject to a CDSC.
Distributions will be invested at the close of business on the payable date
for the distribution. A shareholder considering the Distribution Investment
Program should obtain and read the prospectus of the other fund and consider
the differences in objectives and policies before making any investment.

  SYSTEMATIC WITHDRAWAL PLAN: A shareholder may direct the Shareholder
Servicing Agent to send him (or anyone he designates) regular periodic
payments based upon the value of his account. Each payment under a Systematic
Withdrawal Plan ("SWP") must be at least $100, except in certain limited
circumstances. The aggregate withdrawals of Class B shares in any year
pursuant to a SWP generally are limited to 10% of the value of the account at
the time of the establishment of the SWP. SWP payments are drawn from the
proceeds of share redemptions held in the shareholder's account (which would
be a return of principal and, if reflecting a gain, would be taxable).
Redemptions of Class B and Class C shares will be made in the following order:
(i) to the extent necessary, any "Free Amount"; (ii) any "Reinvested Shares"
and (iii) to the extent necessary, the "Direct Purchase" subject to the lowest
CDSC (as such terms are defined in "Contingent Deferred Sales Charge" in the
Prospectus). The CDSC will be waived in the case of redemptions of Class B and
Class C shares pursuant to a SWP, but will not be waived in the case of SWP
redemptions of Class A shares which are subject to a CDSC. To the extent that
redemptions for such periodic withdrawals exceed dividend income reinvested in
the account, such redemptions will reduce and may eventually exhaust the
number of shares in the shareholder's account. All dividend and capital gain
distributions for an account with a SWP will be reinvested in additional full
and fractional shares of the Fund at the net asset value in effect at the
close of business on the record date for such distributions. To initiate this
service, shares having an aggregate value of at least $5,000 either must be
held on deposit by, or certificates for such shares must be deposited with,
the Shareholder Servicing Agent. With respect to Class A shares, maintaining a
withdrawal plan concurrently with an investment program would be
disadvantageous because of the sales charges included in share purchases and
the imposition of a CDSC on certain redemptions. The shareholder may deposit
into the account additional shares of the Fund, change the payee or change the
dollar amount of each payment. The Shareholder Servicing Agent may charge the
account for services rendered and expenses incurred beyond those normally
assumed by the Fund with respect to the liquidation of shares. No charge is
currently assessed against the account, but one could be instituted by the
Shareholder Servicing Agent on 60 days' notice in writing to the shareholder
in the event that the Fund ceases to assume the cost of these services. The
Fund may terminate any SWP for an account if the value of the account falls
below $5,000 as a result of share redemptions (other than as a result of a
SWP) or an exchange of shares of the Fund for shares of another MFS Fund. Any
SWP may be terminated at any time by either the shareholder or the Fund.

  INVEST BY MAIL: Additional investments of $50 or more may be made at any
time by mailing a check payable to the Fund directly to the Shareholder
Servicing Agent. The shareholder's account number and the name of his
investment dealer must be included with each investment.

  GROUP PURCHASES: A bona fide group and all its members may be treated as a
single purchaser and, under the Right of Accumulation (but not a Letter of
Intent), obtain quantity sales charge discounts on the purchase of Class A
shares if the group (1) gives its endorsement or authorization to the
investment program so it may be used by the investment dealer to facilitate
solicitation of the membership, thus effecting economies of sales effort; (2)
has been in existence for at least six months and has a legitimate purpose
other than to purchase mutual fund shares at a discount; (3) is not a group of
individuals whose sole organizational nexus is as credit cardholders of a
company, policyholders of an insurance company, customers of a bank or broker-
dealer, clients of an investment adviser or other similar group; and (4)
agrees to provide certification of membership of those members investing money
in the MFS Funds upon the request of MFD.

  AUTOMATIC EXCHANGE PLAN: Shareholders having account balances of at least
$5,000 in any MFS Fund may exchange their shares for the same class of shares
of the other MFS Funds (if available for sale) under the Automatic Exchange
Plan. The Automatic Exchange Plan provides for automatic exchanges of funds
from the shareholder's account in an MFS Fund for investment in the same class
of shares of other MFS Funds selected by the shareholder. Under the Automatic
Exchange Plan, exchanges of at least $50 each may be made to up to six
different funds effective on the seventh day of each month or of every third
month, depending whether monthly or quarterly exchanges are elected by the
shareholder. If the seventh day of the month is not a business day, the
transaction will be processed on the next business day. Generally, the initial
exchange will occur after receipt and processing by the Shareholder Servicing
Agent of an application in good order. Exchanges will continue to be made from
a shareholder's account in any MFS Fund as long as the balance of the account
is sufficient to complete the exchanges. Additional payments made to a
shareholder's account will extend the period that exchanges will continue to
be made under the Automatic Exchange Plan. However, if additional payments are
added to an account subject to the Automatic Exchange Plan shortly before an
exchange is scheduled, such funds may not be available for exchanges until the
following month; therefore, care should be used to avoid inadvertently
terminating the Automatic Exchange Plan through exhaustion of the account
balance.

No transaction fee will be charged for exchanges in connection with the
Automatic Exchange Plan. However, exchanges of shares of MFS Money Market
Fund, MFS Government Money Market Fund and Class A shares of MFS Cash Reserve
Fund will be subject to any applicable sales charge. Changes in amounts to be
exchanged to each fund, the funds to which exchanges are to be made and the
timing of exchanges (monthly or quarterly), or termination of a shareholder's
participation in the Automatic Exchange Plan will be made after instructions
in writing or by telephone (an "Exchange Change Request") are received by the
Shareholder Servicing Agent in proper form (i.e., if in writing -- signed by
the record owner(s) exactly as shares are registered; if by telephone --
proper account identification is given by the dealer or shareholder of
record). Each Exchange Change Request (other than termination of participation
in the program) must involve at least $50. Generally, if an Exchange Change
Request is received by telephone or in writing before the close of business on
the last business day of a month, the Exchange Change Request will be
effective for the following month's exchange.

A shareholder's right to make additional investments in any of the MFS Funds,
to make exchanges of shares from one MFS Fund to another and to withdraw from
an MFS Fund, as well as a shareholder's other rights and privileges, are not
affected by a shareholder's participation in the Automatic Exchange Plan.

The Automatic Exchange Plan is part of the Exchange Privilege. For additional
information regarding the Automatic Exchange Plan, including the treatment of
any CDSC, see "Exchange Privilege" below.

  REINSTATEMENT PRIVILEGE: Shareholders of the Fund and shareholders of the
other MFS Funds (except MFS Money Market Fund, MFS Government Money Market
Fund and Class A shares of MFS Cash Reserve Fund in the case where the shares
are acquired through direct purchase or reinvested dividends) who have
redeemed their shares have a one-time right to reinvest the redemption
proceeds in the same class of shares of any of the MFS Funds (if shares of the
fund are available for sale) at net asset value (without a sales charge) and,
if applicable, with credit for any CDSC paid. In the case of proceeds
reinvested in shares of MFS Money Market Fund, MFS Government Money Market
Fund or Class A shares of MFS Cash Reserve Fund, the shareholder has the right
to exchange the acquired shares for shares of another MFS Fund at net asset
value pursuant to the exchange privilege described below. Such a reinvestment
must be made within 90 days of the redemption and is limited to the amount of
the redemption proceeds. If the shares credited for any CDSC paid are then
redeemed within six years of their initial purchase in the case of Class B
shares or within 12 months of the initial purchase of Class C shares and
certain Class A shares, a CDSC will be imposed upon redemption. Although
redemptions and repurchases of shares are taxable events, a reinvestment
within a certain period of time in the same fund may be considered a "wash
sale" and may result in the inability to recognize currently all or a portion
of a loss realized on the original redemption for federal income tax purposes.
Please see your tax adviser for further information.

  EXCHANGE PRIVILEGE -- Subject to the requirements set forth below, some or
all of the shares in an account with the Fund for which payment has been
received by the Fund (i.e., an established account) may be exchanged for
shares of the same class of any of the other MFS Funds (if available for sale
and if the purchaser is eligible to purchase the Class of shares) at their net
asset value. Exchanges will be made only after instructions in writing or by
telephone (an "Exchange Request") are received for an established account by
the Shareholder Servicing Agent.

Each Exchange Request must be in proper form (i.e., if in writing -- signed by
the record owner(s) exactly as the shares are registered; if by telephone --
proper account identification is given by the dealer or shareholder of
record), and each exchange must involve either shares having an aggregate
value of at least $1,000 ($50 in the case of retirement plan participants
whose sponsoring organizations subscribe to the MFS FUNDamental 401(k) Plan or
another similar 401(k) recordkeeping system made available by the Shareholder
Servicing Agent) or all the shares in the account. Each exchange involves the
redemption of the shares of the Fund to be exchanged and the purchase at net
asset value (i.e., without a sales charge) of shares of the same class of the
other MFS Fund. Any gain or loss on the redemption of the shares exchanged is
reportable on the shareholder's federal income tax return, unless both the
shares received and the shares surrendered in the exchange are held in a tax-
deferred retirement plan or other tax-exempt account. If the Exchange Request
is received by the Shareholder Servicing Agent prior to the close of regular
trading on the Exchange on any business day, the exchange usually will occur
on that day if all the requirements set forth above have been complied with at
that time. However, payment of the redemption proceeds by the Fund, and thus
the purchase of shares of the other MFS Fund, may be delayed for up to seven
days if the Fund determines that such a delay would be in the best interest of
all its shareholders. No more than five exchanges may be made in any one
Exchange Request by telephone. Investment dealers which have satisfied
criteria established by MFD may also communicate a shareholder's Exchange
Request to MFD by facsimile subject to the requirements set forth above.

No CDSC is imposed on exchanges among the MFS Funds, although liability for
the CDSC is carried forward to the exchanged shares. For purposes of
calculating the CDSC upon redemption of shares acquired in an exchange, the
purchase of shares acquired in one or more exchanges is deemed to have
occurred at the time of the original purchase of the exchanged shares.

Additional information with respect to any of the MFS Funds, including a copy
of its current prospectus, may be obtained from investment dealers or the
Shareholder Servicing Agent. A shareholder considering an exchange should
obtain and read the prospectus of the other MFS Fund and consider the
differences in objectives and policies before making any exchange.
Shareholders of the other MFS Funds (except shares of MFS Money Market Fund,
MFS Government Money Market Fund and Class A shares of MFS Cash Reserve Fund
acquired through direct purchase and dividends reinvested prior to June 1,
1992) have the right to exchange their shares for shares of the MFS Funds,
subject to the conditions, if any, set forth in their respective prospectuses.
In addition, unitholders of the MFS Fixed Fund have the right to exchange
their units (except units acquired through direct purchases) for shares of the
Fund, subject to the conditions, if any, imposed upon such unitholders by the
MFS Fixed Fund.

Any state income tax advantages for investment in shares of each state-
specific series of MFS Municipal Series Trust may only benefit residents of
such states. Investors should consult with their own tax advisers to be sure
this is an appropriate investment, based on their residency and each state's
income tax laws.

The exchange privilege (or any aspect of it) may be changed or discontinued
and is subject to certain limitations (see "Purchases" in the Prospectus).

   
  TAX-DEFERRED RETIREMENT PLANS -- Shares of the Fund may be purchased by
certain types of tax-deferred retirement plans. MFD makes available, through
investment dealers plans and/or custody agreements, the following:

  Traditional Individual Retirement Accounts (IRAs) (for individuals who
  desire to make limited contributions to a tax-deferred retirement program
  and, if eligible, to receive a federal income tax deduction for amounts
  contributed);

  Roth Individual Retirement Accounts (Roth IRAs) (for individuals who desire
  to make limited contributions to a tax-favored retirement program);

  Simplified Employee Pension (SEP-IRA) Plans;
    

  Retirement Plans Qualified under Section 401(k) of the Internal Revenue Code
  of 1986, as amended (the "Code");

  403(b) Plans (deferred compensation arrangements for employees of public
  school systems and certain non-profit organizations); and

  Certain other qualified pension and profit-sharing plans.

The plan documents provided by MFD designate a trustee or custodian (unless
another trustee or custodian is designated by the individual or group
establishing the plan) and contain specific information about the plans. Each
plan provides that dividends and distributions will be reinvested
automatically. For further details with respect to any plan, including fees
charged by the trustee, custodian or MFD, tax consequences and redemption
information, see the specific documents for that plan. Plan documents other
than those provided by MFD may be used to establish any of the plans described
above. Third party administrative services, available for some corporate
plans, may limit or delay the processing of transactions.

Investors should consult with their tax advisers before establishing any of
the tax-deferred retirement plans described above.

Class C shares are not currently available for purchase by any retirement plan
qualified under Internal Revenue Code section 401(a) or 403(b) if the
retirement plan and/or the sponsoring organization subscribe to the MFS
FUNDamental 401(k) Plan or another similar 401(a) or 403(b) recordkeeping
program made available by the Shareholder Servicing Agent.

   
6.  TAX STATUS
The Fund has elected to be treated and intends to qualify each year as a
"regulated investment company" under Subchapter M of the Code, by meeting all
applicable requirements of Subchapter M, including requirements as to the
nature of the Fund's gross income, the amount of Fund distributions, and the
composition of the Fund's portfolio assets. Because the Fund intends to
distribute all of its net investment income and net realized capital gains to
shareholders in accordance with the timing requirements imposed by the Code,
it is not expected that the Fund will be required to pay any federal income or
excise taxes. If the Fund should fail to qualify as a "regulated investment
company" in any year, the Fund would incur a regular corporate federal income
tax upon its taxable income and Fund distributions would generally be taxable
as ordinary dividend income to the shareholders.

Shareholders of the Fund normally will have to pay federal income taxes on the
dividends and capital gain distributions they receive from the Fund. Dividends
from ordinary income and any distributions from net short-term capital gains
are taxable to shareholders as ordinary income for federal income tax purposes
whether the distributions are paid in cash or reinvested in additional shares.
Because the Fund expects to earn primarily interest income, it is expected
that no Fund dividends will qualify for the dividends received deduction for
corporations. Distributions of net capital gains (i.e., the excess of net
long-term capital gains over net short-term capital losses), whether paid in
cash or reinvested in additional shares, are taxable to shareholders as long-
term capital gains for federal income tax purposes without regard to the
length of time shareholders have held their shares. Such capital gains will
generally be taxable to shareholders as if the shareholders had directly
realized gains from the same sources from which they were realized by the
Fund. Any Fund dividend that is declared in October, November, or December of
any calendar year, that is payable to shareholders of record in such a month,
and that is paid the following January will be treated as if received by the
shareholders on December 31 of the year in which the dividend is declared. The
Fund will notify shareholders regarding the federal tax status of its
distributions after the end of each calendar year.
    

Any Fund distribution of net capital gains or net short-term capital gains
will have the effect of reducing the per share net asset value of shares in
the Fund by the amount of the distribution. Shareholders purchasing shares
shortly before the record date of any such distribution may thus pay the full
price for the shares and then effectively receive a portion of the purchase
price back as a taxable distribution.

   
In general, any gain or loss realized upon a taxable disposition of shares of
the Fund by a shareholder that holds such shares as a capital asset will be
treated as a long-term capital gain or loss if the shares have been held for
more than twelve months and otherwise as a short-term capital gain or loss; a
long-term capital gain realized by an individual, estate or trust may be
eligible for reduced tax rates if the shares were held for more than eighteen
months. However, any loss realized upon a disposition of shares in the Fund
held for six months or less will be treated as a long-term capital loss to the
extent of any distributions of net capital gain made with respect to those
shares. Any loss realized upon a disposition of shares may also be disallowed
under rules relating to wash sales. Gain may be increased (or loss reduced)
upon a redemption of Class A shares of the Fund within ninety days after their
purchase followed by any purchase (including purchases by exchange or by
reinvestment) without payment of an additional sales charge of Class A shares
of the Fund or of another MFS Fund (or any other shares of an MFS Fund
generally sold subject to a sales charge).
    

The Fund's current dividend and accounting policies will affect the amount,
timing and character of distributions to shareholders. Any investment in zero
coupon bonds and certain securities purchased at a market discount will cause
the Fund to recognize income prior to the receipt of cash payments with
respect to those securities. In order to distribute this income and avoid a
tax on the Fund, the Fund may be required to liquidate portfolio securities
that it might otherwise have continued to hold, potentially resulting in
additional taxable gain or loss to the Fund. An investment in residual
interests of a CMO that has elected to be treated as a real estate mortgage
investment conduit, or "REMIC," can create complex tax problems, especially if
the Fund has state or local governments or other tax-exempt organizations as
shareholders.

   
Dividends and certain other payments to persons who are not citizens or
residents of the United States or U.S. entities ("Non-U.S. Persons") are
generally subject to U.S. tax withholding at the rate of 30%. The Fund intends
to withhold U.S. federal income tax at the rate of 30% (or any lower rate
permitted under an applicable treaty) on dividends and other payments to Non-
U.S. Persons that are subject to such withholding. Any amounts overwithheld
may be recovered by such persons by filing a claim for refund with the U.S.
Internal Revenue Service within the time period appropriate to such claims.
Distributions received from the Fund by Non-U.S. Persons may also be subject
to tax under the laws of their own jurisdictions. The Fund is also required in
certain circumstances to apply backup withholding at the rate of 31% on
taxable dividends and redemption proceeds paid to any shareholder (including a
non-U.S. Person) who does not furnish to the Fund certain information and
certifications or who is otherwise subject to backup withholding. Backup
withholding will not, however, be applied to payments which have been subject
to 30% withholding.

As long as it qualifies as a regulated investment company under the Code, the
Fund will not be required to pay Massachusetts income or excise taxes.

Distributions of the Fund that are derived from interest on obligations of the
U.S. Government and certain of its agencies and instrumentalities (but
generally not from capital gains realized upon the disposition of such
obligations) may be exempt from state and local taxes. The Fund intends to
advise shareholders of the extent, if any, to which its distributions consist
of such interest. Shareholders are urged to consult their tax advisers
regarding the possible exclusion of such portion of their dividends for state
and local income tax purposes as well as regarding the tax consequences of an
investment in the Fund.

7.  DETERMINATION OF NET ASSET VALUE AND PERFORMANCE
    NET ASSET VALUE: The net asset value per share of each class of the Fund is
determined each day during which the Exchange is open for trading. (As of the
date of this SAI, such Exchange is open for trading every weekday except for
the following holidays or the days on which they are observed: New Year's Day,
Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day.) This
determination is made once during each such day as of the close of regular
trading on such Exchange by deducting the amount of the liabilities
attributable to the class from the value of the assets attributable to the
class and dividing the difference by the number of shares of the class
outstanding. Debt securities (other than short-term obligations) in the Fund's
portfolio are valued on the basis of valuations furnished by a pricing service
which utilizes both dealer-supplied valuations and electronic data processing
techniques which take into account appropriate factors such as institutional-
size trading in similar groups of securities, yield, quality, coupon rate,
maturity, type of issue, trading characteristics and other market data,
without exclusive reliance upon exchange or over-the-counter prices, since
such valuations are believed to reflect the fair value of such securities. Use
of the pricing service has been approved by the Board of Trustees. Short-term
obligations with a remaining maturity in excess of 60 days will be valued
based upon dealer supplied valuations. Other short-term obligations in the
Fund's portfolio are valued at amortized cost, which constitutes fair value as
determined by the Board of Trustees. Portfolio securities and other assets for
which there are no such quotations or valuations are valued at fair value as
determined in good faith by or at the direction of the Board of Trustees. A
share's net asset value is effective for orders received by the dealer prior
to its calculation and received by MFD prior to the close of that business
day.
    

PERFORMANCE INFORMATION
TOTAL RATE OF RETURN:
The Fund will calculate its total rate of return for each class of shares for
certain periods by determining the average annual compounded rates of return
over those periods that would cause an investment of $1,000 (made with all
distributions reinvested and reflecting the CDSC or the maximum public
offering price) to reach the value of that investment at the end of the
periods. The Fund may also calculate (i) a total rate of return, which is not
reduced by the CDSC (4% maximum for Class B shares and 1% maximum for Class C
shares) and therefore may result in a higher rate of return, (ii) a total rate
of return assuming an initial account value of $1,000, which will result in a
higher rate of return since the value of the initial account will not be
reduced by the sales charge applicable to Class A shares (2.50% maximum), and/
or (iii) total rates of return which represent aggregate performance over a
period or year-by-year performance, and which may or may not reflect the
effect of the maximum or other sales charge or CDSC.

   
The Fund offers multiple classes of shares which were initially offered for
sale to, and purchased by, the public on different dates (the class "inception
date"). The calculation of total rate of return for a class of shares which
has a later class inception date than another class of shares of the Fund is
based both on (i) the performance of the Fund's newer class from its inception
date and (ii) the performance of the Fund's oldest class from its inception
date up to the class inception date of the newer class.

As discussed in the Prospectus, the sales charges, expenses and expense
ratios, and therefore the performance, of the Fund's classes of shares differ.
In calculating total rate of return for a newer class of shares in accordance
with certain formulas required by the SEC, the performance will be adjusted to
take into account the fact that the newer class is subject to a different
sales charge than the oldest class (e.g., if the newer class is Class A
shares, the total rate of return quoted will reflect the deduction of the
initial sales charge applicable to Class A shares; if the newer class is Class
B shares, the total rate of return quoted will reflect the deduction of the
CDSC applicable to Class B shares). However, the performance will not be
adjusted to take into account the fact that the newer class of shares bears
different class specific expenses than the oldest shares (e.g.,  Rule 12b-1
fees). Therefore, the total rate of return quoted for a newer class of shares
will differ from the return that would be quoted had the newer class of shares
been outstanding for the entire period over which the calculation is based
(i.e., the total rate of return quoted for the newer class will be higher than
the return that would have been quoted had the newer class of shares been
outstanding for the entire period over which the calculation is based if the
class specific expenses for the newer class are higher than the class specific
expenses of the oldest class, and the total rate of return quoted for the
newer class will be lower than the return that would be quoted had the newer
class of shares been outstanding for this entire period if the class specific
expenses for the newer class are lower than the class specific expenses of the
oldest class).
    

Total rate of return quotations for each class are presented in Appendix A
attached hereto under the heading "Performance Quotations."

   
PERFORMANCE RESULTS:  The performance results for Class A shares presented in
Appendix A attached hereto under the heading "Performance Results" assume an
intial investment of $10,000 in Class A shares, and cover the period from the
Fund's commencement of investment operations, September 26, 1988, to December
31, 1997. It has been assumed that dividends and capital gain distributions
were reinvested in additional shares. These performance results, as well as
any yield or total rate of return quotation provided by the Fund, should not
be considered as representative of the performance of the Fund in the future
since the net asset value and public offering price of shares of the Fund will
vary based not only on the type, quality and maturities of the securities held
in its portfolio, but also on changes in the current value of such securities
and on changes in the Fund's expenses. These factors and possible differences
in the methods used to calculate yields and total rates of return should be
considered when comparing the Fund's yield and total rate of return to yields
and total rates of return published for other investment companies or other
investment vehicles. Total rate of return reflects the performance of both
principal and income. Current net asset value and account balance information
may be obtained by calling 1-800-MFS-Talk (637-8255).
    

YIELD: Any yield quotation for a class of shares of the Fund is based on the
annualized net investment income per share of that class of the Fund over a
30-day period. The yield is calculated by dividing the net investment income
per share allocated to a particular class of the Fund earned during the period
by the maximum public offering price per share of such class on the last day
of that period. The resulting figure is then annualized. Net investment income
per share of a class is determined by dividing (i) the dividends and interest
earned by the Fund allocated to that class during the period, minus accrued
expenses of such class for the period, by (ii) the average number of Fund
shares of such class entitled to receive dividends during the period
multiplied by the maximum public offering price per share of such class on the
last day of the period. The Fund's yield calculations for Class A shares
assume a maximum sales charge of 2.50%. For Class B and Class C shares, the
Fund's yield calculation assumes no CDSC is paid. Yield quotations for each
class of shares are presented in Appendix A attached hereto under the heading
"Performance Quotations."

CURRENT DISTRIBUTION RATE: Yield, which is calculated according to a formula
prescribed by the SEC, is not indicative of the amounts which were or will be
paid to the Fund's shareholders. Amounts paid to shareholders of each class
are reflected in the quoted "current distribution rate" for that class. The
current distribution rate for a class is computed by dividing the total amount
of dividends per share paid by the Fund to shareholders of that class during
the past 12 months by the maximum public offering price of that class at the
end of such period. Under certain circumstances, such as when there has been a
change in the amount of dividend payout, or a fundamental change in investment
policies, it might be appropriate to annualize the dividends paid over the
period such policies were in effect, rather than using the dividends paid
during the past 12 months. The current distribution rate differs from the
yield computation because it may include distributions to shareholders from
sources other than dividends and interest, such as premium income for option
writing, short-term capital gains and return of invested capital, and is
calculated over a different period of time. The Fund's current distribution
rate calculation for Class A shares assumes a maximum sales charge of 2.50%.
The Fund's current distribution rate calculation for Class B and Class C
shares assumes no CDSC is paid. Current distribution rate quotations for each
class of shares are presented in Appendix A hereto.

   
GENERAL: From time to time, the Fund may, as appropriate, quote Fund rankings
or reprint all or a portion of evaluations of Fund performance and operations
appearing in various independent publications, including but not limited to
the following: Money, Fortune, U.S. News and World Report, Kiplinger's
Personal Finance, The Wall Street Journal, Barron's, Investors Business Daily,
Newsweek, Financial World, Financial Planning, Investment Advisor, USA Today,
Pensions and Investments, SmartMoney, Forbes, Global Finance, Registered
Representative, Institutional Investor, the Investment Company Institute,
Johnson's Charts, Morningstar, Lipper Analytical Securities Corporation, CDA
Wiesenberger, Shearson Lehman and Salomon Bros. Indices, Ibbotson, Business
Week, Lowry Associates, Media General, Investment Company Data, The New York
Times, Your Money, Strangers Investment Advisor, Financial Planning on Wall
Street, Standard and Poor's, Individual Investor, The 100 Best Mutual Funds
You Can Buy by Gordon K. Williamson, Consumer Price Index, and Sanford C.
Bernstein & Co. Fund performance may also be compared to the performance of
other mutual funds tracked by financial or business publications or
periodicals.
    

The Fund may also quote evaluations mentioned in independent radio or
television broadcasts.

From time to time, the Fund may use charts and graphs to illustrate the past
performance of various indices such as those mentioned above and illustrations
using hypothetical rates of return to illustrate the effects of compounding
and tax-deferral.

The Fund may advertise examples of the effects of periodic investment plans,
including the principle of dollar cost averaging. In such a program, an
investor invests a fixed dollar amount in a fund at periodic intervals,
thereby purchasing fewer shares when prices are high and more shares when
prices are low. While such a strategy does not assure a profit or guard
against a loss in a declining market, the investor's average cost per share
can be lower than if fixed numbers of shares are purchased at the same
intervals.

From time to time, the Fund may discuss or quote its current portfolio manager
as well as other investment personnel, including such persons' views on: the
economy; securities markets; portfolio securities and their issuers;
investment philosophies, strategies, techniques and criteria used in the
selection of securities to be purchased or sold for the Fund; the Fund's
portfolio holdings; the investment research and analysis process; the
formulation and evaluation of investment recommendations; and the assessment
and evaluation of credit, interest rate, market and economic risks. and other
similar or related matters.

From time to time the Fund may also discuss or quote the views of its
distributor, its investment adviser and other financial planning, legal, tax,
accounting, insurance, estate planning and other professionals, or from
surveys, regarding individual and family financial planning. Such views may
include information regarding the following: retirement planning; tax
management strategies; estate planning; general investment techniques (e.g.,
asset allocation and disciplined saving and investing); business succession;
ideas and information provided through the MFS Heritage Planningsm program, an
inter-generational financial planning assistance program; issues with respect
to insurance (e.g., disability and life insurance and Medicare supplemental
insurance); issues regarding financial and health care management for elderly
family members; and other similar or related matters.

MFS FIRSTS: MFS has a long history of innovations.

       --        1924 --  Massachusetts Investors Trust is established
                 as the first open-end mutual fund in America.

       --        1924 -- Massachusetts Investors Trust is the first
                 mutual fund to make full public disclosure of its
                 operations in shareholder reports.

       --        1932 --  One of the first internal research departments
                 is established to provide in-house analytical
                 capability for an investment management firm.

       --        1933 --  Massachusetts Investors Trust is the first
                 mutual fund to register under the Securities Act of
                 1933 ("Truth in Securities Act" or "Full Disclosure
                 Act").

       --        1936 --  Massachusetts Investors Trust is the first
                 mutual fund to allow shareholders to take capital gain
                 distributions either in additional shares or cash.

       --        1976 --  MFS(R) Municipal Bond Fund is among the first
                 municipal bond funds established.

       --        1979 --  Spectrum becomes the first combination fixed/
                 variable annuity with no initial sales charge.

       --        1981 -- MFS(R) World Governments Fund is established as
                 America's first globally diversified fixed-income
                 mutual fund.

       --        1984 -- MFS(R) Municipal High Income Fund is the first
                 open-end mutual fund to seek high tax-free income from
                 lower-rated municipal securities.

       --        1986 -- MFS(R) Managed Sectors Fund becomes the first
                 mutual fund to target and shift investments among
                 industry sectors for shareholders.

       --        1986 -- MFS(R) Municipal Income Trust is the first
                 closed-end, high-yield municipal bond fund traded on
                 the New York Stock Exchange.

       --        1987 -- MFS(R) Multimarket Income Trust is the first
                 closed-end, multimarket high income fund listed on the
                 New York Stock Exchange.

       --        1989 -- MFS(R) Regatta becomes America's first non-
                 qualified market-value-adjusted fixed/variable annuity.

       --        1990 -- MFS(R) World Total Return Fund is the first
                 global balanced fund.

       --        1993 -- MFS(R) World Growth Fund is the first global
                 emerging markets fund to offer the expertise of two
                 sub-advisers.

   
       --        1993 -- MFS becomes money manager of MFS(R) Union
                 Standard(R) Equity Fund, the first fund to invest in
                 companies deemed to be union-friendly by an Advisory
                 Board of senior labor officials, senior managers of
                 companies with significant labor contracts, academics
                 and other national labor leaders or experts.
    

8.  DISTRIBUTION PLAN
The Trustees have adopted a Distribution Plan for Class A, Class B and Class C
shares (the "Distribution Plan") pursuant to Section 12(b) of the 1940 Act and
Rule 12b-1 thereunder (the "Rule") after having concluded that there is a
reasonable likelihood that the Distribution Plan would benefit the Fund and
the respective class of shareholders. The provisions of the Distribution Plan
are severable with respect to each Class of shares offered by the Fund. The
Distribution Plan is designed to promote sales, thereby increasing the net
assets of the Fund. Such an increase may reduce the Fund's expense ratio to
the extent the Fund's fixed costs are spread over a larger net asset base.
Also, an increase in net assets may lessen the adverse effects that could
result were the Fund required to liquidate portfolio securities to meet
redemptions. There is, however, no assurance that the net assets of the Fund
will increase or that the other benefits referred to above will be realized.

The Distribution Plan is described in the Prospectus under the caption
"Distribution Plan," which is incorporated herein by reference. The following
information supplements this Prospectus discussion.

SERVICE FEES:  With respect to Class A shares, no service fees will be paid:
(i) to any dealer who is the holder or dealer of record for investors who own
Class A shares having an aggregate net asset value less than $750,000, or such
other amount as may be determined from time to time by MFD (MFD, however, may
waive this minimum amount requirement from time to time); or (ii) to any
insurance company which has entered into an agreement with the Fund and MFD
that permits such insurance company to purchase Class A shares from the Fund
at their net asset value in connection with annuity agreements issued in
connection with the insurance company's separate accounts. Dealers may from
time to time be required to meet certain other criteria in order to receive
service fees.

With respect to the Class B shares, except in the case of the first year
service fee, no service fees will be paid to any securities dealer who is the
holder or dealer of record for investors who own Class B shares having an
aggregate net asset value of less than $750,000 or such other amount as may be
determined by MFD from time to time. MFD, however, may waive this minimum
amount requirement from time to time. Dealers may from time to time be
required to meet certain other criteria in order to receive service fees.

MFD or its affiliates shall be entitled to receive any service fee payable
under the Distribution Plan for which there is no dealer of record or for
which qualification standards have not been met as partial consideration for
personal services and/or account maintenance services performed by MFD or its
affiliates for shareholder accounts.

DISTRIBUTION FEES:  The purpose of distribution payments to MFD under the
Distribution Plan is to compensate MFD for its distribution services to the
Fund. MFD pays commissions to dealers as well as expenses of printing
prospectuses and reports used for sales purposes, expenses with respect to the
preparation and printing of sales literature and other distribution related
expenses, including, without limitation, the cost necessary to provide
distribution-related services, or personnel, travel, office expenses and
equipment.

   
DISTRIBUTION AND SERVICE FEES PAID DURING THE FUND'S LAST FISCAL YEAR:
During the fiscal year ended December 31, 1997, the Fund paid the following
Distribution Plan expenses:

                                    AMOUNT OF      AMOUNT OF      AMOUNT OF
                                  DISTRIBUTION   DISTRIBUTION   DISTRIBUTION
                                   AND SERVICE    AND SERVICE    AND SERVICE
                                    FEES PAID    FEES RETAINED  FEES RECEIVED
CLASSES OF SHARES                    BY FUND        BY MFD       BY DEALERS
- -----------------                    -------        ------       ----------

Class A Shares                      $303,865       $ 47,341       $256,524

Class B Shares                      $317,290       $260,125       $ 57,165

Class C Shares                      $194,299       $  4,093       $190,206

GENERAL:  The Distribution Plan will remain in effect until August 1, 1998,
and will continue in effect thereafter only if such continuance is
specifically approved at least annually by vote of both the Trustees and a
majority of the Trustees who are not "interested persons" or financially
interested parties of such Plan ("Distribution Plan Qualified Trustees"). The
Distribution Plan also requires that the Fund and MFD each shall provide the
Trustees, and the Trustees shall review, at least quarterly, a written report
of the amounts expended (and purposes therefor) under such Plan. The
Distribution Plan may be terminated at any time by vote of a majority of the
Distribution Plan Qualified Trustees or by vote of the holders of a majority
of the respective class of the Fund's shares (as defined in "Investment
Restrictions"). All agreements relating to the Distribution Plan entered into
between the Fund or MFD and other organizations must be approved by the Board
of Trustees, including a majority of the Distribution Plan Qualified Trustees.
Agreements under the Distribution Plan must be in writing, will be terminated
automatically if assigned, and may be terminated at any time without payment
of any penalty, by vote of a majority of the Distribution Plan Qualified
Trustees or by vote of the holders of a majority of the respective class of
the Fund's shares. The Distribution Plan may not be amended to increase
materially the amount of permitted distribution expenses without the approval
of a majority of the respective class of the Fund's shares (as defined in
"Investment Restrictions") or may not be materially amended in any case
without a vote of the Trustees and a majority of the Distribution Plan
Qualified Trustees. The selection and nomination of Distribution Plan
Qualified Trustees shall be committed to the discretion of the non-interested
Trustees then in office. No Trustee who is not an "interested person" has any
financial interest in the Distribution Plan or in any related agreement.
    

9.  DESCRIPTION OF SHARES, VOTING RIGHTS AND LIABILITIES
The Fund's Declaration of Trust permits the Trustees to issue an unlimited
number of full and fractional Shares of Beneficial Interest (without par
value) and to divide or combine the shares into a greater or lesser number of
shares without thereby changing the proportionate beneficial interests in the
Fund. The Declaration of Trust further authorizes the Trustees to classify or
reclassify the shares of the Fund into one or more classes. Pursuant thereto,
the Trustees have authorized the issuance of four classes of shares of the
Fund, Class A, Class B and Class C shares as well as Class I shares. Each
share of a class of the Fund represents an equal proportionate interest in the
assets of the Fund allocable to that class. Upon liquidation of the Fund, the
shareholders of each class of the Fund are entitled to share pro rata in the
Fund's net assets allocable to such class available for distribution to its
shareholders. The Fund reserves the right to create and issue additional
series of shares, in which case the shares of each series would participate
equally in the earnings, dividends and assets of the particular series
(subject to any class expenses) and each series may be entitled to vote
separately to approve investment advisory agreements or changes in investment
restrictions, but shareholders of all series would vote together in the
election of Trustees and the selection of accountants. The Fund reserves the
right to create additional classes of shares.

Shareholders are entitled to one vote for each share held and may vote in the
election of Trustees and on other matters submitted to meetings of
shareholders. Although Trustees are not elected annually by the shareholders,
shareholders have under certain circumstances the right to remove one or more
Trustees. No material amendment may be made to the Fund's Declaration of Trust
without the affirmative vote of a majority of its shares. The Fund may merge
or consolidate with another organization or sell all or substantially all of
its assets, if approved by the vote of the holders of two-thirds of its
outstanding shares, except that if the Trustees recommend such merger,
consolidation or sale, the approval by vote of the holders of a majority of
the Fund's outstanding shares will be sufficient. The Fund may be terminated
upon liquidation and distribution of its assets, if approved by the vote of
the holders of two-thirds of its outstanding shares or by the Trustees by
written notice. If not so terminated, the Fund will continue indefinitely.

The Fund is an entity of the type commonly known as a "Massachusetts business
trust." Under Massachusetts law, shareholders of such a trust may, under
certain circumstances, be held personally liable as partners for its
obligations. However, the Fund's Declaration of Trust contains an express
disclaimer of shareholder liability for acts or obligations of the Fund and
provides for indemnification and reimbursement of expenses out of Fund
property for any shareholder held personally liable for the obligations of the
Fund. The Fund's Declaration of Trust also provides that it shall maintain
appropriate insurance (for example, fidelity bonding and errors and omissions
insurance) for the protection of the Fund, its shareholders, Trustees,
officers, employees and agents covering possible tort and other liabilities.
Thus, the risk of a shareholder incurring financial loss on account of
shareholder liability is limited to circumstances in which both inadequate
insurance existed and the Fund itself was unable to meet its obligations.

The Fund's Declaration of Trust further provides that obligations of the Fund
are not binding upon the Trustees individually but only upon the property of
the Fund and that the Trustees will not be liable for errors of judgment or
mistakes of fact or law, but nothing in the Declaration of Trust protects a
Trustee against any liability to which he would otherwise be subject by reason
of willful misfeasance, bad faith, gross negligence, or reckless disregard of
the duties involved in the conduct of his office.

10. INDEPENDENT AUDITORS AND FINANCIAL STATEMENTS
Ernst & Young LLP are the Fund's independent auditors, providing audit
services, tax services, and assistance and consultation with respect to the
preparation of filings with the SEC.

   
The Portfolio of Investments and Statement of Assets and Liabilities at
December 31, 1997, the Statement of Operations for the year ended December 31,
1997, the Statement of Changes in Net Assets for each of the two years in the
period ended December 31, 1997, the Notes to Financial Statements and the
Independent Auditors' Report, each of which is included in the Annual Report
to Shareholders of the Fund, are incorporated by reference into this SAI in
reliance upon the report of Ernst & Young LLP, independent auditors, given
upon their authority as experts in accounting and auditing. A copy of the
Annual Report accompanies this SAI.
    

<PAGE>

                                                                    APPENDIX A

                           PERFORMANCE INFORMATION

The performance results and quotations below should not be considered as
representative of the performance of the Fund in the future since the net
asset value and public offering price of shares of the Fund will vary. See
"Determination of Net Asset Value and Performance" in the SAI.

                    PERFORMANCE RESULTS -- CLASS A SHARES

<TABLE>
<CAPTION>
                                   VALUE OF                VALUE OF             VALUE OF
                                INITIAL $10,000          CAPITAL GAIN          REINVESTED           TOTAL
       YEAR ENDED                 INVESTMENT             DISTRIBUTIONS          DIVIDENDS           VALUE
       ----------                 ----------             -------------          ---------           -----
<S>                                 <C>                       <C>                <C>               <C>    
    December 31, 1988*              $9,645                    $0                 $  163            $ 9,808
    December 31, 1989                9,635                     0                  1,206             10,841
    December 31, 1990                9,200                     0                  2,161             11,361
    December 31, 1991                9,170                     0                  3,150             12,320
    December 31, 1992                9,089                     0                  4,033             13,122
    December 31, 1993                9,099                     0                  4,941             14,040
    December 31, 1994                8,522                     0                  5,412             13,934
    December 31, 1995                8,795                     0                  6,583             15,378
    December 31, 1996                8,512                     0                  7,324             15,836
    December 31, 1997                8,502                     0                  8,331             16,833
</TABLE>

* For the period from the commencement of investment operations, September 26,
  1988, to December 31, 1988.

Explanatory Notes: The results in the table assume that income dividends and
capital gain distributions were invested in additional shares. The results
also assume that the initial investment in Class A shares was reduced by the
current maximum applicable sales charge. No adjustment has been made for
income taxes, if any, payable by shareholders.

                            PERFORMANCE QUOTATIONS

   
All performance quotations are as of December 31, 1997.
<TABLE>
<CAPTION>
                                                                                             ACTUAL
                                                                                             30-DAY      30-DAY
                                                                                              YIELD       YIELD
                                                    AVERAGE ANNUAL TOTAL RETURNS           (INCLUDING    (WITHOUT        CURRENT
                                                ----------------------------------------       ANY          ANY        DISTRIBUTION
                                                1 YEAR         5 YEAR     LIFE OF FUND(1)   WAIVERS)      WAIVERS)         RATE
                                                ------         ------     ---------------   --------      --------         ----
<S>                                              <C>            <C>            <C>            <C>          <C>            <C>  
Class A Shares with sales charge ............    3.59%          4.31%          5.78%           N/A         5.56%          6.08%
Class A Shares without sales charge .........    6.30%          5.11%          6.07%           N/A          N/A            N/A
Class B Shares with CDSC ....................    1.61%          4.01%(2)       5.65%(2)        N/A          N/A            N/A
Class B Shares without CDSC .................    5.61%          4.33%(2)       5.65%(2)        N/A         4.92%          5.46%
Class C Shares with CDSC ....................    4.56%          4.45%(3)       5.72%(3)        N/A          N/A            N/A
Class C Shares without CDSC .................    5.56%          4.45%(3)       5.72%(3)        N/A         4.88%          5.42%
Class I Shares ..............................    6.55%(4)       5.13%(4)       6.08%(4)        N/A         5.86%          6.35%(5)

(1) From the initial public offering date of the Fund on September 26, 1988.
(2) Class B share performance includes the performance of the Fund's Class A shares for periods prior to the inception of
    Class B shares on September 7, 1993. Sales charges, expenses and expense ratios, and therefore performance, for Class A
    and Class B shares differ. Class B share performance has been adjusted to reflect that Class B shares generally are
    subject to a CDSC (unless the performance quotation does not give effect to the CDSC) whereas Class A shares generally
    are subject to an initial sales charge. Class B share performance has not, however, been adjusted to reflect differences
    in operating expenses (e.g., Rule 12b-1 fees), which generally are lower for Class A shares.
(3) Class C share performance includes the performance of the Fund's Class A shares for periods prior to the inception of
    offering of Class C shares on August 1, 1994. Sales charges, expenses and expense ratios, and therefore performance, for
    Class A and Class C shares differ. Class C share performance has been adjusted to reflect that Class C shares generally
    are subject to a CDSC (unless the performance quotation does not give effect to the CDSC) whereas Class A shares
    generally are subject to an initial sales charge. Class C share performance has not, however, been adjusted to reflect
    differences in operating expenses (e.g., Rule 12b-1 fees), which generally are lower for Class A shares.
(4) Class I share performance includes the performance of the Fund's Class A shares for periods prior to the inception of
    Class I shares on January 2, 1997. Sales charges, expenses and expense ratios, and therefore performance for Class I and
    A shares differ. Class I share performance has been adjusted to reflect that Class I shares are not subject to an initial
    sales charge, whereas Class A shares generally are subject to an initial sales charge. Class I share performance has not,
    however, been adjusted to reflect differences in operating expenses (e.g., Rule 12b-1 fees), which generally are lower
    for Class I shares.
(5) The current distribution rate for Class I shares is calculated by annualizing the last dividend.
    
</TABLE>
<PAGE>

INVESTMENT ADVISER
Massachusetts Financial Services Company
500 Boylston Street, Boston, MA 02116
(617) 954-5000

DISTRIBUTOR
MFS Fund Distributors, Inc.
500 Boylston Street, Boston, MA 02116
(617) 954-5000

CUSTODIAN AND DIVIDEND DISBURSING AGENT
State Street Bank and Trust Company
225 Franklin Street, Boston, MA 02110

SHAREHOLDER SERVICING AGENT
MFS Service Center, Inc.
500 Boylston Street, Boston, MA 02116
Toll free: (800) 225-2606

MAILING ADDRESS
P.O. Box 2281, Boston, MA 02107-9906

INDEPENDENT AUDITORS
Ernst & Young LLP
200 Clarendon Street, Boston, MA 02116


[LOGO] M F S(SM)
INVESTMENT MANAGEMENT
We invented the mutual fund(SM)

MFS(R) GOVERNMENT LIMITED MATURITY FUND
500 Boylston Street
Boston, MA 02116

   
                                                 MGL-13-5/98/.5M    28/228/328
    
<PAGE>

                                     PART C

ITEM 24.          FINANCIAL STATEMENTS AND EXHIBITS

   
                  (a)   Financial Statements Included in Part A:
                             For the seven years ended December 31, 1997, for
                             the ten-month period ended December 31, 1990, for
                             the year ended February 28, 1990, and for the
                             period from September 26, 1988 (commencement of
                             operations) to February 28, 1989:
                                Financial Highlights

                        Financial Statements Included in Part B:
                             At December 31, 1997:
                                Portfolio of Investments*
                                Statement of Assets and Liabilities*

                             For the year ended December 31, 1997:
                                Statement of Operations*

                             For the two years ended December 31, 1997:
                                Statement of Changes in Net Assets*

- --------------------
* Incorporated herein by reference to the Fund's Annual Report to Shareholders
  dated December 31, 1997, filed via EDGAR with the SEC on March 6, 1998.
    

                  (b)   Exhibits

                         1 (a)   Amended and Restated Declaration of Trust,
                                 dated February 8, 1995. (1)

   
                           (b)   Amendment to Declaration of Trust, dated June
                                 12, 1996. (7)

                           (c)   Amendment to Declaration of Trust dated
                                 December 19, 1996. (10)
    

                         2       Amended and Restated By-Laws, dated December
                                 14, 1994. (1)

                         3       Not Applicable.

   
                         4       Form of Share Certificate for Classes of
                                 Shares. (6)

                         5       Investment Advisory Agreement, dated August 10,
                                 1988. (5)
    

                         6 (a)   Distribution Agreement, dated January 1, 
                                 1995.  (1)

   
                           (b)   Dealer Agreement between MFS Fund Distributors,
                                 Inc. ("MFD"), and a dealer and the Mutual Fund
                                 Agreement between MFD and a bank or NASD
                                 affiliate, dated April 11, 1997. (2)

                         7       Retirement Plan for Non-Interested Person
                                 Trustees, dated January 1, 1991. (5)

                         8 (a)   Custodian Agreement, dated August 10, 
                                 1988. (5)

                           (b)   Amendment No. 1 to Custodian Agreement, dated
                                 August 10, 1988. (5)

                           (c)   Amendment No. 2 to Custodian Agreement, dated
                                 August 9, 1989. (5)

                           (d)   Amendment No. 3 to Custodian Agreement, dated
                                 October 1, 1989. (5)

                           (e)   Amendment No. 4 to Custodian Agreement, dated
                                 October 9, 1991. (5)

                         9 (a)   Shareholder Servicing Agent Agreement,
                                 dated August 10, 1988. (5)

                           (b)   Amendment to Exhibit B of the Shareholder
                                 Servicing Agent Agreement to amend fee schedule
                                 dated January 1, 1998; filed herewith.

                           (c)   Exchange Privilege Agreement, dated July 30,
                                 1997. (9)

                           (d)   Loan Agreement by and among the Banks named
                                 therein, the MFS Funds named therein, and The
                                 First National Bank of Boston, dated as of
                                 February 21, 1995. (3)

                           (e)   Third Amendment to the Loan Agreement among MFS
                                 Borrowers and The First National Bank of Boston
                                 dated as of February 14, 1997. (11)

                           (f)   Master Administrative Services Agreement dated
                                 March 1, 1997, as amended. (8)

                           (g)   Dividend Disbursing Agency Agreement dated
                                 August 10, 1988. (7)

                        10       Consent and Opinion of Counsel dated April 27,
                                 1998; filed herewith.
    

                        11       Consent of Ernst & Young LLP; filed herewith.

                        12       Not Applicable.

                        13       Not Applicable.

   
                        14 (a)   Forms for Individual Retirement Account
                                 Disclosure Statement as currently in effect.
                                 (4)

                           (b)   Forms for MFS 403(b) Custodial Account
                                 Agreement as currently in effect. (4)

                           (c)   Forms for MFS Prototype Paired Defined
                                 Contribution Plans and Trust Agreement as
                                 currently in effect. (4)

                           (d)   Forms for Roth Individual Retirement Account
                                 Disclosure Statement and Trust Agreement as
                                 currently in effect. (13)

                        15 (a)   Master Distribution Plan pursuant to Rule
                                 12b-1 under the Investment Company Act of 1940,
                                 effective January 1, 1997. (10)

                           (b)   Exhibits as revised February 11, 1998 to Master
                                 Distribution Plan pursuant to Rule 12b-1 under
                                 the Investment Company Act of 1940 to replace
                                 those Exhibits to the Master Distribution Plan
                                 contained in Exhibit 15(a) above. (12)
    

                        16       Schedule of Computation for Performance
                                 Quotations: Average Annual Total Return and
                                 Aggregate Total Return, Distribution Rate and
                                 Standardized Yield Calculation. (1)

                        17       Financial Data Schedules; filed herewith.

   
                        18.      Plan pursuant to Rule 18f-3(d) under the
                                 Investment Company Act of 1940. (6)

                                 Power of Attorney, dated August 11, 1994. (1)
                                 Power of Attorney, dated February 19, 1998;
                                 filed herewith.
    

- ----------------
 (1) Incorporated by reference to the Registrant's Post-Effective Amendment No.
     14 filed with the SEC via EDGAR on April 28, 1995.

   
 (2) Incorporated by reference to MFS Series Trust III (File Nos. 2-60491 and
     811-2794) Post-Effective Amendment No. 29 filed with the SEC via EDGAR on
     May 29, 1997. .

 (3) Incorporated by reference to Amendment No. 8 on Form N-2 for MFS Municipal
     Income Trust (File No. 811-4841) filed with the SEC via EDGAR on February
     28, 1995.

 (4) Incorporated by reference to MFS Series Trust IX (File Nos. 2-50409 and
     811-2464) Post-Effective Amendment No. 32 filed with the SEC via EDGAR on
     August 28, 1995.

 (5) Incorporated by reference to the Registrant's Post-Effective Amendment No.
     15 filed with the SEC via EDGAR on October 19, 1995.

 (6) Incorporated by reference to MFS Series Trust I (File Nos. 33-7638 and
     811-4777) Post-Effective Amendment No. 25 filed with the SEC via EDGAR on
     August 27, 1996.

 (7) Incorporated by reference to the Registrant's Post-Effective Amendment No.
     17 filed with the SEC via EDGAR on August 29, 1996.

 (8) Incorporated by reference to Massachusetts Investors Growth Stock Fund
     (File Nos. 2-14677 and 811-859) Post-Effective Amendment No. 65 filed with
     the SEC via EDGAR on March 30, 1998.

 (9) Incorporated by reference to Massachusetts Investors Growth Stock Fund
     (File Nos. 2-14677 and 811-859) Post-Effective Amendment No. 64 filed with
     the SEC via EDGAR on October 29, 1997.

(10) Incorporated by reference to the Registrant's Post-Effective Amendment No.
     18 filed with the SEC via EDGAR on April 29, 1997.

(11) Incorporated by reference to MFS Series Trust I (File Nos. 33-7638 and
     811-4777) Post-Effective Amendment No. 28 filed with the SEC via EDGAR on
     June 26, 1997.

(12) Incorporated by reference to MFS Series Trust I (File Nos. 33-7638 and
     811-4777) Post-Effective Amendment No. 30 filed with the SEC via EDGAR on
     March 30, 1998.

(13) Incorporated by reference to MFS Series Trust VIII (File Nos. 33-37972 and
     811-5262) Post-Effective Amendment No. 14 filed with the SEC via EDGAR on
     February 26, 1998.
    

ITEM 25.          PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

                  Not applicable.

<PAGE>

ITEM 26.          NUMBER OF HOLDERS OF SECURITIES

                        (1)                                        (2)
             TITLE OF CLASS                             NUMBER OF RECORD HOLDERS

   
             Class A Shares of Beneficial Interest                6,604
                   (without par value)                  (as of March 31, 1998)

             Class B Shares of Beneficial Interest                1,992
                   (without par value)                  (as of March 31, 1998)

             Class C Shares of Beneficial Interest                  538
                   (without par value)                  (as of March 31, 1998)

             Class I Shares of Beneficial Interest                    3
                   (without par value)                  (as of March 31, 1998)
    

ITEM 27.          INDEMNIFICATION

                  Reference is hereby made to (a) Article V of Registrant's
Amended and Restated Declaration of Trust, incorporated by reference to
Post-Effective Amendment No. 14, filed with the SEC on April 28, 1995 and (b)
Section 9 of the Shareholder Servicing Agent Agreement, incorporated by
reference to Registrant's Post-Effective Amendment No. 15 filed with the SEC via
EDGAR on October 19, 1995.

                  The Trustees and Officers of the Registrant and the personnel
of the Registrant's investment adviser and principal underwriter are insured
under an errors and omissions liability insurance policy. The Registrant and its
officers are also insured under the fidelity bond required by Rule 17g-1 under
the Investment Company Act of 1940, as amended.

ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

   
                  MFS serves as investment adviser to the following open-end
Funds comprising the MFS Family of Funds (except the Vertex Funds mentioned
below): Massachusetts Investors Trust, Massachusetts Investors Growth Stock
Fund, MFS Growth Opportunities Fund, MFS Government Securities Fund, MFS
Government Limited Maturity Fund, MFS Series Trust I (which has thirteen series:
MFS Managed Sectors Fund, MFS Cash Reserve Fund, MFS World Asset Allocation
Fund, MFS Strategic Growth Fund, MFS Research Growth and Income Fund, MFS Core
Growth Fund, MFS Equity Income Fund, MFS Special Opportunities Fund, MFS
Convertible Securities Fund, MFS Blue Chip Fund, MFS New Discovery Fund, MFS
Science and Technology Fund and MFS Research International Fund), MFS Series
Trust II (which has three series: MFS Emerging Growth Fund, MFS Large Cap Growth
Fund and MFS Intermediate Income Fund), MFS Series Trust III (which has two
series: MFS High Income Fund and MFS Municipal High Income Fund), MFS Series
Trust IV (which has four series: MFS Money Market Fund, MFS Government Money
Market Fund, MFS Municipal Bond Fund and MFS Mid Cap Growth Fund), MFS Series
Trust V (which has six series: MFS Total Return Fund, MFS Research Fund, MFS
International Opportunities Fund, MFS International Strategic Growth Fund, MFS
International Value Fund and MFS Asia Pacific Fund), MFS Series Trust VI (which
has three series: MFS World Total Return Fund, MFS Utilities Fund and MFS World
Equity Fund), MFS Series Trust VII (which has two series: MFS World Governments
Fund and MFS Value Fund), MFS Series Trust VIII (which has two series: MFS
Strategic Income Fund and MFS World Growth Fund), MFS Series Trust IX (which has
three series: MFS Bond Fund, MFS Limited Maturity Fund and MFS Municipal Limited
Maturity Fund), MFS Series Trust X (which has eight series: MFS Government
Mortgage Fund, MFS/Foreign & Colonial Emerging Markets Equity Fund, MFS
International Growth Fund, MFS International Growth and Income Fund, MFS Real
Estate Investment Fund, MFS Strategic Value Fund, MFS Small Cap Value Fund and
MFS Emerging Markets Debt Fund), MFS Series Trust XI (which has six series: MFS
Union Standard Equity Fund, Vertex All Cap Fund, Vertex Research All Cap Fund,
Vertex Growth Fund, Vertex Discovery Fund and Vertex Contrarian Fund (the Vertex
Funds are expected to be declared effective April 28, 1998)), and MFS Municipal
Series Trust (which has 16 series: MFS Alabama Municipal Bond Fund, MFS Arkansas
Municipal Bond Fund, MFS California Municipal Bond Fund, MFS Florida Municipal
Bond Fund, MFS Georgia Municipal Bond Fund, MFS Maryland Municipal Bond Fund,
MFS Massachusetts Municipal Bond Fund, MFS Mississippi Municipal Bond Fund, MFS
New York Municipal Bond Fund, MFS North Carolina Municipal Bond Fund, MFS
Pennsylvania Municipal Bond Fund, MFS South Carolina Municipal Bond Fund, MFS
Tennessee Municipal Bond Fund, MFS Virginia Municipal Bond Fund, MFS West
Virginia Municipal Bond Fund and MFS Municipal Income Fund) (the "MFS Funds").
The principal business address of each of the MFS Funds is 500 Boylston Street,
Boston, Massachusetts 02116.

                  MFS also serves as investment adviser of the following
open-end Funds: MFS Institutional Trust ("MFSIT") (which has seven series) and
MFS Variable Insurance Trust ("MVI") (which has twelve series). The principal
business address of each of the aforementioned funds is 500 Boylston Street,
Boston, Massachusetts 02116.

                  In addition, MFS serves as investment adviser to the following
closed-end funds: MFS Municipal Income Trust, MFS Multimarket Income Trust, MFS
Government Markets Income Trust, MFS Intermediate Income Trust, MFS Charter
Income Trust and MFS Special Value Trust (the "MFS Closed-End Funds"). The
principal business address of each of the MFS Closed-End Funds is 500 Boylston
Street, Boston, Massachusetts 02116.

                  Lastly, MFS serves as investment adviser to MFS/Sun Life
Series Trust ("MFS/SL") (which has 26 series), Money Market Variable Account,
High Yield Variable Account, Capital Appreciation Variable Account, Government
Securities Variable Account, World Governments Variable Account, Total Return
Variable Account and Managed Sectors Variable Account (collectively, the
"Accounts"). The principal business address of MFS/SL is 500 Boylston Street,
Boston, Massachusetts 02116. The principal business address of each of the
aforementioned Accounts is One Sun Life Executive Park, Wellesley Hills,
Massachusetts 02181.

                  Vertex Investment Management, Inc., a Delaware corporation and
a wholly owned subsidiary of MFS, whose principal business address is 500
Boylston Street, Boston, Massachusetts 02116 ("Vertex"), serves as investment
adviser to Vertex All Cap Fund, Vertex Research All Cap Fund, Vertex Growth
Fund, Vertex Discovery Fund and Vertex Contrarian Fund, each a series of MFS
Series Trust XI. The principal business address of the aforementioned Funds is
500 Boylston Street, Boston, Massachusetts 02116.

                  MFS International Ltd. ("MIL"), a limited liability company
organized under the laws of Bermuda and a subsidiary of MFS, whose principal
business address is Cedar House, 41 Cedar Avenue, Hamilton HM12 Bermuda, serves
as investment adviser to and distributor for MFS American Funds (which has six
portfolios: MFS American Funds-U.S. Equity Fund, MFS American Funds-U.S.
Emerging Growth Fund, MFS American Funds-U.S. High Yield Bond Fund, MFS American
Funds - U.S. Dollar Reserve Fund, MFS American Funds-Charter Income Fund and MFS
American Funds-U.S. Research Fund) (the "MIL Funds"). The MIL Funds are
organized in Luxembourg and qualify as an undertaking for collective investments
in transferable securities (UCITS). The principal business address of the MIL
Funds is 47, Boulevard Royal, L-2449 Luxembourg.

                  MIL also serves as investment adviser to and distributor for
MFS Meridian U.S. Government Bond Fund, MFS Meridian Charter Income Fund, MFS
Meridian Global Governments Fund, MFS Meridian U.S. Emerging Growth Fund, MFS
Meridian Global Equity Fund, MFS Meridian Limited Maturity Fund, MFS Meridian
World Growth Fund, MFS Meridian Money Market Fund, MFS Meridian World Total
Return Fund, MFS Meridian U.S. Equity Fund, MFS Meridian Research Fund, MFS
Meridian U.S. High Yield Fund and MFS Meridian Emerging Markets Debt Fund
(collectively the "MFS Meridian Funds"). Each of the MFS Meridian Funds is
organized as an exempt company under the laws of the Cayman Islands. The
principal business address of each of the MFS Meridian Funds is P.O. Box 309,
Grand Cayman, Cayman Islands, British West Indies.

                  MFS International (U.K.) Ltd. ("MIL-UK"), a private limited
company registered with the Registrar of Companies for England and Wales whose
current address is 4 John Carpenter Street, London, England ED4Y 0NH, is
involved primarily in marketing and investment research activities with respect
to private clients and the MIL Funds and the MFS Meridian Funds.

                  MFS Institutional Advisors (Australia) Ltd.
("MFSI-Australia"), a private limited company organized under the Corporations
Law of New South Wales, Australia whose current address is Level 37, Governor
Phillip Tower, One Farrer Place, Sydney, N5W2000, Australia, is involved
primarily in investment management and distribution of Australian superannuation
unit trusts and acts as an investment adviser to institutional accounts.

                  MFS Holdings Australia Pty Ltd. ("MFS Holdings Australia"), a
private limited company organized pursuant to the Corporations Law of New South
Wales, Australia whose current address is Level 37, Governor Phillip Tower, One
Farrer Place, Sydney, NSW2000 Australia, and whose function is to serve
primarily as a holding company.

                  MFS Fund Distributors, Inc. ("MFD"), a wholly owned subsidiary
of MFS, serves as distributor for the MFS Funds, MVI and MFSIT.

                  MFS Service Center, Inc. ("MFSC"), a wholly owned subsidiary
of MFS, serves as shareholder servicing agent to the MFS Funds, the MFS
Closed-End Funds, MFSIT and MVI.

                  MFS Institutional Advisors, Inc. ("MFSI"), a wholly owned
subsidiary of MFS, provides investment advice to substantial private clients.

                  MFS Retirement Services, Inc. ("RSI"), a wholly owned
subsidiary of MFS, markets MFS products to retirement plans and provides
administrative and record keeping services for retirement plans.

                  MFS

                  The Directors of MFS are Jeffrey L. Shames, Arnold D. Scott,
John W. Ballen, Donald A. Stewart and John D. McNeil. Mr. Shames is the
Chairman, Chief Executive Officer and President, Mr. Scott is a Senior Executive
Vice President and Secretary, William W. Scott, Jr., Patricia A. Zlotin, John W.
Ballen, Thomas J. Cashman, Jr., Joseph W. Dello Russo and Kevin R. Parke are
Executive Vice Presidents, Stephen E. Cavan is a Senior Vice President, General
Counsel and an Assistant Secretary, Robert T. Burns is a Senior Vice President,
Associate General Counsel and an Assistant Secretary of MFS, and Thomas B.
Hastings is a Vice President and Treasurer of MFS.

                  MASSACHUSETTS INVESTORS TRUST
                  MASSACHUSETTS INVESTORS GROWTH STOCK FUND
                  MFS GROWTH OPPORTUNITIES FUND
                  MFS GOVERNMENT SECURITIES FUND
                  MFS SERIES TRUST I
                  MFS SERIES TRUST V
                  MFS SERIES TRUST VI
                  MFS SERIES TRUST X
                  MFS GOVERNMENT LIMITED MATURITY FUND

                  Stephen E. Cavan is the Secretary, W. Thomas London is the
Treasurer, James O. Yost, Ellen M. Moynihan and Mark E. Bradley, Vice Presidents
of MFS, are the Assistant Treasurers, James R. Bordewick, Jr., Senior Vice
President and Associate General Counsel of MFS, is the Assistant Secretary.

                  MFS SERIES TRUST II

                  Leslie J. Nanberg, Senior Vice President of MFS, is a Vice
President, Stephen E. Cavan is the Secretary, W. Thomas London is the Treasurer,
James O. Yost, Ellen M. Moynihan and Mark E. Bradley are the Assistant
Treasurers, and James R. Bordewick, Jr. is the Assistant Secretary.

                  MFS GOVERNMENT MARKETS INCOME TRUST
                  MFS INTERMEDIATE INCOME TRUST

                  Leslie J. Nanberg, Senior Vice President of MFS, is a Vice
President, Stephen E. Cavan is the Secretary, W. Thomas London is the Treasurer,
James O. Yost, Ellen M. Moynihan and Mark E. Bradley are the Assistant
Treasurers, and James R. Bordewick, Jr. is the Assistant Secretary.

                  MFS SERIES TRUST III

                  James T. Swanson, Robert J. Manning and Joan S. Batchelder,
Senior Vice Presidents of MFS, and Bernard Scozzafava, Vice President of MFS,
are Vice Presidents, Sheila Burns-Magnan, Assistant Vice President of MFS, and
Daniel E. McManus, Vice President of MFS, are Assistant Vice Presidents, Stephen
E. Cavan is the Secretary, W. Thomas London is the Treasurer, James O. Yost,
Ellen M. Moynihan and Mark E. Bradley are the Assistant Treasurers, and James R.
Bordewick, Jr. is the Assistant Secretary.

                  MFS SERIES TRUST IV
                  MFS SERIES TRUST IX

                  Robert A. Dennis and Geoffrey L. Kurinsky, Senior Vice
Presidents of MFS, are Vice Presidents, Stephen E. Cavan is the Secretary, W.
Thomas London is the Treasurer, James O. Yost, Ellen M. Moynihan and Mark E.
Bradley are the Assistant Treasurers and James R. Bordewick, Jr. is the
Assistant Secretary.

                  MFS SERIES TRUST VII

                  Leslie J. Nanberg and Stephen C. Bryant, Senior Vice
Presidents of MFS, are Vice Presidents, Stephen E. Cavan is the Secretary, W.
Thomas London is the Treasurer, James O. Yost, Ellen M. Moynihan and Mark E.
Bradley are the Assistant Treasurers and James R. Bordewick, Jr. is the
Assistant Secretary.

                  MFS SERIES TRUST VIII

                  Jeffrey L. Shames, Leslie J. Nanberg and James T. Swanson and
John D. Laupheimer, Jr., a Senior Vice President of MFS, are Vice Presidents,
Stephen E. Cavan is the Secretary, W. Thomas London is the Treasurer, James O.
Yost, Ellen M. Moynihan and Mark E. Bradley are the Assistant Treasurers and
James R. Bordewick, Jr. is the Assistant Secretary.

                  MFS MUNICIPAL SERIES TRUST

                  Robert A. Dennis is Vice President, David B. Smith and
Geoffrey L. Schechter, Vice Presidents of MFS, are Vice Presidents, Daniel E.
McManus, Vice President of MFS, is an Assistant Vice President, Stephen E. Cavan
is the Secretary, W. Thomas London is the Treasurer, James O. Yost, Ellen M.
Moynihan and Mark E. Bradley are the Assistant Treasurers and James R.
Bordewick, Jr. is the Assistant Secretary.

                  MFS VARIABLE INSURANCE TRUST
                  MFS SERIES TRUST XI
                  MFS INSTITUTIONAL TRUST

                  Stephen E. Cavan is the Secretary, W. Thomas London is the
Treasurer, James O. Yost, Ellen M. Moynihan and Mark E. Bradley are the
Assistant Treasurers and James R. Bordewick, Jr. is the Assistant Secretary.

                  MFS MUNICIPAL INCOME TRUST

                  Robert J. Manning is Vice President, Stephen E. Cavan is the
Secretary, W. Thomas London is the Treasurer, James O. Yost, Ellen M. Moynihan
and Mark E. Bradley are the Assistant Treasurers and James R. Bordewick, Jr. is
the Assistant Secretary.

                  MFS MULTIMARKET INCOME TRUST
                  MFS CHARTER INCOME TRUST

                  Leslie J. Nanberg and James T. Swanson are Vice Presidents,
Stephen E. Cavan is the Secretary, W. Thomas London is the Treasurer, James O.
Yost, Ellen M. Moynihan and Mark E. Bradley are the Assistant Treasurers and
James R. Bordewick, Jr. is the Assistant Secretary.

                  MFS SPECIAL VALUE TRUST

                  Robert J. Manning is Vice President, Stephen E. Cavan is the
Secretary, W. Thomas London is the Treasurer, James O. Yost, Ellen M. Moynihan
and Mark E. Bradley are the Assistant Treasurers and James R. Bordewick, Jr. is
the Assistant Secretary.

                  MFS/SUN LIFE SERIES TRUST

                  John D. McNeil, Chairman and Director of Sun Life Assurance
Company of Canada, is the Chairman, Stephen E. Cavan is the Secretary, W. Thomas
London is the Treasurer, James O. Yost, Ellen M. Moynihan and Mark E. Bradley
are the Assistant Treasurers and James R. Bordewick, Jr. is the Assistant
Secretary.

                  MONEY MARKET VARIABLE ACCOUNT
                  HIGH YIELD VARIABLE ACCOUNT
                  CAPITAL APPRECIATION VARIABLE ACCOUNT
                  GOVERNMENT SECURITIES VARIABLE ACCOUNT
                  TOTAL RETURN VARIABLE ACCOUNT
                  WORLD GOVERNMENTS VARIABLE ACCOUNT
                  MANAGED SECTORS VARIABLE ACCOUNT

                  John D. McNeil is the Chairman, Stephen E. Cavan is the
Secretary, and James R. Bordewick, Jr. is the Assistant Secretary.

                  VERTEX

                  Jeffrey L. Shames and Arnold D. Scott are the Directors,
Jeffrey L. Shames is the President, Kevin R. Parke and John W. Ballen are
Executive Vice Presidents, John F. Brennan, Jr., and John D. Laupheimer are
Senior Vice Presidents, Brian E. Stack is a Vice President, Joseph W. Dello
Russo is the Treasurer, Thomas B. Hastings is the Assistant Treasurer, Stephen
E. Cavan is the Secretary and Robert T. Burns is the Assistant Secretary.

                  MIL

                  Arnold D. Scott, Jeffrey L. Shames and Thomas J. Cashman, Jr.
are Directors, Stephen E. Cavan is a Director, Senior Vice President and the
Clerk, Robert T. Burns is an Assistant Clerk, Joseph W. Dello Russo, Executive
Vice President and Chief Financial Officer of MFS, is the Treasurer and Thomas
B. Hastings is the Assistant Treasurer.

                  MIL-UK

                  Thomas J. Cashman, Jr. is President and a Director, Arnold D.
Scott and Jeffrey L. Shames are Directors, Stephen E. Cavan is a Director and
the Secretary, Joseph W. Dello Russo is the Treasurer, Thomas B. Hastings is the
Assistant Treasurer and Robert T. Burns is the Assistant Secretary.

                  MFSI - AUSTRALIA

                  Thomas J. Cashman, Jr. is President and a Director, Graham E.
Lenzer, John A. Gee and David Adiseshan are Directors, Stephen E. Cavan is the
Secretary, Joseph W. Dello Russo is the Treasurer, Thomas B. Hastings is the
Assistant Treasurer, and Robert T. Burns is the Assistant Secretary.

                  MFS HOLDINGS - AUSTRALIA

                  Jeffrey L. Shames is the President and a Director, Arnold D.
Scott, Thomas J. Cashman, Jr., and Graham E. Lenzer are Directors, Stephen E.
Cavan is the Secretary, Joseph W. Dello Russo is the Treasurer, Thomas B.
Hastings is the Assistant Treasurer, and Robert T. Burns is the Assistant
Secretary.

                  MIL FUNDS

                  Richard B. Bailey, John A. Brindle, Richard W. S. Baker,
Arnold D. Scott, Jeffrey L. Shames and William F. Waters are Directors, Stephen
E. Cavan is the Secretary, W. Thomas London is the Treasurer, James O. Yost,
Ellen M. Moynihan and Mark E. Bradley are the Assistant Treasurers and James R.
Bordewick, Jr. is the Assistant Secretary.

                  MFS MERIDIAN FUNDS

                  Richard B. Bailey, John A. Brindle, Richard W. S. Baker,
Arnold D. Scott, Jeffrey L. Shames and William F. Waters are Directors, Stephen
E. Cavan is the Secretary, W. Thomas London is the Treasurer, James R.
Bordewick, Jr. is the Assistant Secretary and James O. Yost, Ellen M. Moynihan
and Mark E. Bradley are the Assistant Treasurers.

                  MFD

                  Arnold D. Scott and Jeffrey L. Shames are Directors, William
W. Scott, Jr., an Executive Vice President of MFS, is the President, Stephen E.
Cavan is the Secretary, Robert T. Burns is the Assistant Secretary, Joseph W.
Dello Russo is the Treasurer, and Thomas B. Hastings is the Assistant Treasurer.

                  MFSC

                  Arnold D. Scott and Jeffrey L. Shames are Directors, Joseph A.
Recomendes, a Senior Vice President and Chief Information Officer of MFS, is
Vice Chairman and a Director, Janet A. Clifford is the President, Joseph W.
Dello Russo is the Treasurer, Thomas B. Hastings is the Assistant Treasurer,
Stephen E. Cavan is the Secretary, and Robert T. Burns is the Assistant
Secretary.

                  MFSI

                  Jeffrey L. Shames, and Arnold D. Scott are Directors, Thomas
J. Cashman, Jr., is the President and a Director, Leslie J. Nanberg is a Senior
Vice President, a Managing Director and a Director, Kevin R. Parke is the
Executive Vice President and a Managing Director, George F. Bennett, Jr., John
A. Gee, Brianne Grady, Joseph A. Kosciuszek and Joseph J. Trainor are Senior
Vice Presidents and Managing Directors, Joseph W. Dello Russo is the Treasurer,
Thomas B. Hastings is the Assistant Treasurer and Robert T. Burns is the
Secretary.

                  RSI

                  Arnold D. Scott is the Chairman and a Director, Martin E.
Beaulieu is the President, William W. Scott, Jr. is a Director, Joseph W. Dello
Russo is the Treasurer, Thomas B. Hastings is the Assistant Treasurer, Stephen
E. Cavan is the Secretary and Robert T. Burns is the Assistant Secretary.

                  In addition, the following persons, Directors or officers of
MFS, have the affiliations indicated:

                  Donald A. Stewart        President and a Director, Sun Life 
                                             Assurance Company of Canada, Sun
                                             Life Centre, 150 King Street West,
                                             Toronto, Ontario, Canada (Mr.
                                             Stewart is also an officer and/or
                                             Director of various subsidiaries
                                             and affiliates of Sun Life)

                  John D. McNeil           Chairman, Sun Life Assurance Company
                                             of Canada, Sun Life Centre, 150
                                             King Street West, Toronto, Ontario,
                                             Canada (Mr. McNeil is also an
                                             officer and/or Director of various
                                             subsidiaries and affiliates of Sun
                                             Life)

                  Joseph W. Dello Russo     Director of Mutual Fund Operations,
                                             The Boston Company, Exchange Place,
                                             Boston, Massachusetts (until
                                             August, 1994)
    

ITEM 29.          DISTRIBUTORS

                  (a) Reference is hereby made to Item 28 above.

                  (b) Reference is hereby made to Item 28 above; the principal
business address of each of these persons is 500 Boylston Street, Boston,
Massachusetts 02116.

                  (c) Not applicable.

ITEM 30.          LOCATION OF ACCOUNTS AND RECORDS

                  The accounts and records of the Registrant are located, in
whole or in part, at the office of the Registrant and the following locations:

                                 NAME                         ADDRESS

                  Massachusetts Financial                500 Boylston Street
                    Services Company (investment         Boston, MA 02116
                    (adviser)

                  MFS Fund Distributors, Inc.            500 Boylston Street
                    (principal underwriter)              Boston, MA  02116

                  State Street Bank and Trust            State Street South
                    Company (custodian)                  5 - West
                                                         North Quincy, MA  02171

                  MFS Service Center, Inc.               500 Boylston Street
                    (transfer agent)                     Boston, MA  02116

ITEM 31.          MANAGEMENT SERVICES

                  Not applicable.

ITEM 32.          UNDERTAKINGS

                  (a) Not applicable.

                  (b) Not applicable.

                  (c) Registrant undertakes to furnish each person to whom a
prospectus is delivered with a copy of its latest annual report to shareholders
upon request and without charge.

                  (d) Insofar as indemnification for liability arising under the
Securities Act of 1933 may be permitted to trustees, officers and controlling
persons of the Registrant pursuant to the provisions set forth in Item 27 of
this Part C, or otherwise, the Registrant has been advised that in the opinion
of the Securities and Exchange Commission such indemnification is against public
policy as expressed in the Act and is, therefore, unenforceable. In the event
that a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a trustee, officer or
controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the Securities being Registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
<PAGE>

                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Registration Statement pursuant to
Rule 485(b) under the Securities Act of 1933 and has duly caused this
Post-Effective Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereto duly authorized, in the City of Boston and
The Commonwealth of Massachusetts on the 28th day of April, 1998.

                              MFS GOVERNMENT LIMITED
                                MATURITY FUND

                              By:      JAMES R. BORDEWICK, JR.
                              Name:    James R. Bordewick, Jr.
                              Title:   Assistant Secretary

      Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment to its Registration Statement has been signed below by
the following persons in the capacities indicated on April 28, 1998.

      SIGNATURE                      TITLE

STEPHEN E. CAVAN*             Principal Executive Officer
- -------------------------     
Stephen E. Cavan

                              Treasurer (Principal Financial Officer
W. THOMAS LONDON*             and Principal Accounting Officer)
- -------------------------
W. Thomas London                           

RICHARD B. BAILEY*            Trustee
- -------------------------
Richard B. Bailey

MARSHALL N. COHAN*            Trustee
- -------------------------
Marshall N. Cohan

LAWRENCE H. COHN, M.D.*       Trustee
- -------------------------
Lawrence H. Cohn, M.D.

SIR J. DAVID GIBBONS*         Trustee
- -------------------------
Sir J. David Gibbons

ABBY M. O'NEILL*              Trustee
- -------------------------
Abby M. O'Neill

WALTER E. ROBB, III*          Trustee
- -------------------------
Walter E. Robb, III

ARNOLD D. SCOTT*              Trustee
- -------------------------
Arnold D. Scott

JEFFREY L. SHAMES*            Trustee
- -------------------------
Jeffrey L. Shames

J. DALE SHERRATT*             Trustee
- -------------------------
J. Dale Sherratt

WARD SMITH*                   Trustee
- -------------------------
Ward Smith


                              *By:  JAMES R. BORDEWICK, JR.
                              Name: James R. Bordewick, Jr.
                                    as Attorney-in-fact

                              Executed by James R. Bordewick, Jr. on behalf of
                              those indicated pursuant to (i) a Power of
                              Attorney dated August 11, 1994, incorporated by
                              reference to the Registrant's Post- Effective
                              Amendment No. 14 filed with the Securities and
                              Exchange Commission via EDGAR on April 28, 1995
                              and (ii) a Power of Attorney dated February 19,
                              1998, filed herewith.
<PAGE>

                                POWER OF ATTORNEY

                      MFS Government Limited Maturity Fund


         The undersigned officer of MFS Government Limited Maturity Fund (the
"Registrant") hereby severally constitutes and appoints Jeffrey L. Shames,
Arnold D. Scott, W. Thomas London, and James R. Bordewick, Jr., and each of them
singly, as true and lawful attorneys, with full power to them and each of them
to sign for the undersigned, in the name of, and in the capacity indicated
below, any Registration Statement and any and all amendments thereto and to file
the same with all exhibits thereto, and other documents in connection therewith,
with the Securities and Exchange Commission for the purpose of registering the
Registrant as a management investment company under the Investment Company Act
of 1940 and/or the shares issued by the Registrant under the Securities Act of
1933 granting unto my said attorneys, and each of them, acting alone, full power
and authority to do and perform each and every act and thing requisite or
necessary or desirable to be done in the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys or any of them may lawfully do or cause to be
done by virtue thereof.

         In WITNESS WHEREOF, the undersigned has hereunto set his hand on this
19th day of February, 1998.


         Signature                               Title
         ---------                               -----

         STEPHEN E. CAVAN                        Principal Executive Officer
         ------------------------
         Stephen E. Cavan
<PAGE>

                                INDEX TO EXHIBITS


EXHIBIT NO.                 DESCRIPTION OF EXHIBIT                    PAGE NO.
- -----------                 ----------------------                    --------

  9 (b)      Amendment to Exhibit B of the Shareholder
             Servicing Agent Agreement to amend fee schedule
             dated January 1, 1998.

 10          Consent and Opinion of Counsel dated April 27, 1998.

 11          Consent of Ernst & Young LLP.

 17          Financial Data Schedules.


<PAGE>

                                                             EXHIBIT NO. 99.9(b)

                      MFS GOVERNMENT LIMITED MATURITY FUND
               500 Boylston Street o Boston o Massachusetts 02116

                                                       As of January 1, 1998

MFS Service Center, Inc.
500 Boylston Street
Boston, MA 02116

Dear Sir/Madam:

         This will confirm our understanding that Exhibit B to the Shareholder
Servicing Agent Agreement between us, dated August 10, 1988, as amended, is
hereby amended, effective immediately, to read in its entirety as set forth on
Attachment 1 hereto.

       Please indicate your acceptance of the foregoing by signing below.

                                            Sincerely,

                                            MFS GOVERNMENT LIMITED MATURITY FUND

                                            By:  W. THOMAS LONDON
                                                 ---------------------
                                                 W. Thomas London
                                                 Treasurer

Accepted and Agreed:

MFS SERVICE CENTER, INC.

By:   JOSEPH W. DELLO RUSSO
      -----------------------
      Joseph W. Dello Russo
      Treasurer
<PAGE>

                                                         ATTACHMENT 1
                                                         As of January 1, 1998

                          EXHIBIT B TO THE SHAREHOLDER
                        SERVICING AGENT AGREEMENT BETWEEN
                        MFS SERVICE CENTER, INC. ("MFSC")
              AND MFS GOVERNMENT LIMITED MATURITY FUND (THE "FUND")

The fees to be paid by the Fund on behalf of its series with respect to all
shares of each series of the Fund to MFSC, for MFSC's services as shareholder
servicing agent, shall be 0.1125% of the average daily net assets of the Fund.


<PAGE>

                                                               EXHIBIT NO. 99.10

                    MASSACHUSETTS FINANCIAL SERVICES COMPANY
              500 BOYLSTON STREET, BOSTON, MASSACHUSETTS 02116-3741
           (617) 954-5182/FACSIMILE (617) 954-7760 [email protected]

JAMES R. BORDEWICK, JR.
Senior Vice President and
Associate General Counsel

                                                             April 27, 1998

MFS Government Limited Maturity Fund
500 Boylston Street
Boston, MA  02116

Gentlemen:

         I am a Senior Vice President and Associate General Counsel of
Massachusetts Financial Services Company, which serves as investment adviser to
MFS Government Limited Maturity Fund (the "Fund"), and the Assistant Secretary
of the Fund. I am admitted to practice law in The Commonwealth of Massachusetts.
The Fund was created under a written Declaration of Trust dated March 11, 1985,
executed and delivered in Boston, Massachusetts, as amended and restated
February 8, 1995 (the "Declaration of Trust"). The beneficial interest
thereunder is represented by transferable shares without par value. The Trustees
have the powers set forth in the Declaration of Trust, subject to the terms,
provisions and conditions therein provided.

         I am of the opinion that the legal requirements have been complied with
in the creation of the Fund, and that said Declaration of Trust is legal and
valid.

         Under Article III, Section 3.4 and Article VI, Section 6.4 of the
Declaration of Trust, the Trustees are empowered, in their discretion, from time
to time to issue shares of the Fund for such amount and type of consideration,
at such time or times and on such terms as the Trustees may deem best. Under
Article VI, Section 6.1, it is provided that the number of shares of beneficial
interest authorized to be issued under the Declaration of Trust is unlimited.

         By vote adopted on February 2, 1995, the Trustees of the Fund
determined to sell to the public the authorized but unissued shares of
beneficial interest of the Fund for cash at a price which will net the Fund
(before taxes) not less than the net asset value thereof, as defined in the
Fund's By-Laws, determined next after the sale is made or at some later time
after such sale.
<PAGE>

         The Fund has registered an indefinite number of shares of beneficial
interest under the Securities Act of 1933.

         I am of the opinion that all necessary Fund action precedent to the
issue of all the authorized but unissued Shares of the Fund has been duly taken,
and that all the Shares were legally and validly issued, and when sold, will be
fully paid and non-assessable, assuming the receipt by the Fund of the cash
consideration therefor in accordance with the terms of the February 2, 1995 vote
of the Trustees described above, except as described below. I express no opinion
as to compliance with the Securities Act of 1933, the Investment Company Act of
1940, or applicable state "Blue Sky" or securities laws in connection with the
sale of the Shares.

         The Fund is an entity of the type commonly known as a "Massachusetts
business trust." Under Massachusetts law, shareholders could, under certain
circumstances, be held personally liable for the obligations of the Fund.
However, the Declaration of Trust disclaims shareholder liability for acts or
obligations of the Fund and requires that notice of such disclaimer be given in
each agreement, obligation, or instrument entered into or executed by the Fund
or the Trustees. The Declaration of Trust provides for indemnification out of
the Fund property for all loss and expense of any shareholder held personally
liable for the obligations of the Fund. Thus, the risk of a shareholder
incurring financial loss on account of shareholder liability is limited to
circumstances in which the Fund itself would be unable to meet its obligations.

         I consent to your filing this opinion with the Securities and Exchange
Commission.

                                            Very truly yours,

                                            JAMES R. BORDEWICK, JR.
                                            James R. Bordewick, Jr.

JRB/bjn


<PAGE>

                                                               EXHIBIT NO. 99.11

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

         We consent to the reference made to our firm under the captions
"Condensed Financial Information" in the Prospectus and "Independent Auditors
and Financial Statements" in the Statement of Additional Information and to the
incorporation by reference in this Post-Effective Amendment No. 19 to
Registration Statement No. 2-96738 on Form N-1A of our report dated February 9,
1998, on the financial statements and financial highlights of MFS Government
Limited Maturity Fund, included in the 1997 Annual Report to Shareholders.

                                            ERNST & YOUNG LLP
                                            --------------------
                                            Ernst & Young LLP


Boston, Massachusetts
April 24, 1998


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