MFS VARIABLE INSURANCE TRUST
485APOS, 1998-02-27
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<PAGE>
   
   As filed with the Securities and Exchange Commission on February 27, 1998
    
                                            1933 Act File No.  33-74668
                                            1940 Act File No. 811-8326

================================================================================

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

                                   FORM N-1A
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
   
                        POST-EFFECTIVE AMENDMENT NO. 10
    
                                      AND
                             REGISTRATION STATEMENT
                                     UNDER
                       THE INVESTMENT COMPANY ACT OF 1940
                                AMENDMENT NO. 11

                          MFS VARIABLE INSURANCE TRUST
             (Exact name of registrant as specified in its 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)
    
         |_| on [date] pursuant to paragraph (b)
         |_| 60 days after filing pursuant to paragraph (a)(i)
         |_| on [date] pursuant to paragraph (a)(i) 
   
         |X| 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 VARIABLE INSURANCE TRUST(R) - MFS NEW DISCOVERY SERIES

                       Supplement to the current Prospectus and 
               Statement of Additional Information dated May 1, 1998

         The  following  should  be read in  conjunction  with the MFS  Variable
Insurance Trust (the "Trust")  Prospectus  dated May 1, 1998 (the  "Prospectus")
and SAI and  contains  a  description  of the New  Discovery  Series  (the  "New
Discovery Series" or the "Series"),  a new series of the MFS Variable  Insurance
Trust.  The  investment  objective of this Series is capital  appreciation.  The
Series' investment adviser is Massachusetts Financial Services Company ("MFS" or
the "Adviser").

         This Supplement forms an integral part of the Prospectus and may not be
distributed  separately.  This Supplement describes the investment objective and
policies of the New Discovery Series, together with any policies, procedures, or
features of the Series  which  differ  from those of the other  Trust  series as
described  in the  Prospectus.  Policies,  procedures  and  features  of the New
Discovery  Series not described in this Supplement are identical to those of the
other  Trust  series  as  described  in the  Prospectus.  Terms  defined  in the
Prospectus have the same meaning when used in this Supplement.

1.   EXPENSE SUMMARY

Annual Operating Expenses (as a percentage of net assets):


Management Fee                                           0.90%
Other Expenses (after expense limitation)(1)(2)          0.25%
                                                         -----
Total Operating Expenses (after expense limitation)(2)   1.15%
- --------------------

1 The  Series  has an expense  offset  arrangement  which  reduces  the  Series'
custodian  fee based upon the amount of cash  maintained  by the Series 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  Series'  expenses).  Any such fee  reductions  are not
reflected under "Other  Expenses." 2 The Adviser has agreed to bear expenses for
the Series, subject to reimbursement by the Series, such that the Series' "Other
Expenses" do not exceed 0.25% the of the average  daily net assets of the Series
during the current fiscal year. Otherwise, "Other Expenses" and "Total Operating
Expenses" for the Series are estimated to be 0.47% and 1.37%, respectively.  See
"Expenses" below and in the Prospectus.

                                  Example of Expenses

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

                  Period                Amount

                  1 year                 $12
                  3 years                $37

         The  purpose  of the  expense  table  above is to assist  investors  in
understanding  the various costs and expenses  that a shareholder  of the Series
will bear directly or indirectly.  The Series' annual operating  expenses do not
reflect  expenses  imposed  by  separate  accounts  of  Participating  Insurance
Companies  through  which an  investment  in a Series  is made or their  related
Contracts. A separate account's expenses are disclosed in the prospectus through
which the Contract relating to the separate account is offered for sale.

The "Example set forth above should not be considered a representation of future
expenses  of the  Series;  actual  expenses  may be greater or lesser than those
shown.
<PAGE>

2.   INVESTMENT CONCEPT OF THE TRUST

         The Trust is an  open-end,  registered  management  investment  company
comprised of the New Discovery Series and twelve other series. The New Discovery
Series is a diversified, segregated, separately managed portfolio of securities.
See "Investment Concept of the Trust" in the Prospectus.

3.   INVESTMENT OBJECTIVES AND POLICIES

         The Series' investment  objective is capital  appreciation.  The Series
seeks to achieve its objective by investing,  under normal market conditions, at
least 65% of its total  assets in  companies  that the  Adviser  believes  offer
superior  prospects  for  growth.  Such  securities  may  either  be  listed  on
securities exchanges or traded in the  over-the-counter  markets and may be U.S.
or foreign companies.  While companies in which the Series invests may be of any
size,  such as companies in a relatively  early stage of development  that offer
the  potential  for  accelerated  earnings or revenue  growth  (emerging  growth
companies),  or larger or more  established  companies  whose  rates of earnings
growth  are  expected  to  accelerate  because  of  special  factors,   such  as
rejuvenated management,  new products, or structural changes in the economy, the
Series will  generally  invest in companies  with small  market  capitalizations
relative to companies  included in the  Standard & Poor's 500 Stock Index.  Such
companies  generally would be expected to show earnings growth over time that is
well above the growth rate of the overall economy and the rate of inflation, and
would have the products,  management and market  opportunities which are usually
necessary to become more widely recognized as growth companies. The Series seeks
to maintain a portfolio weighted median capitalization of $2 billion or less.

         The Series  may also  invest in fixed  income  securities  offering  an
opportunity for capital  appreciation,  including up to 10% of its net assets in
fixed income securities rated BB or lower by Standard & Poor's Ratings Services,
Inc. ("S&P"),  Fitch Investors  Service,  Inc. ("Fitch") or Duff & Phelps Credit
Rating Co. ("Duff & Phelps") or Ba or lower by Moody's Investors  Service,  Inc.
("Moody's"),  or if  unrated,  determined  to be of  equivalent  quality  by the
Adviser  (commonly  referred to as "junk  bonds").  For a  description  of these
ratings,  see Appendix B to the Prospectus (see also  "Additional Risk Factors -
Lower Rated Bonds" in the Prospectus).

         The Series may engage in short  sales of  securities  which the Adviser
expects to decline in price (see "Short Sales" below).

         Consistent with its investment  objective and policies described above,
the Series may also  invest up to (but not  including)  20% of its net assets in
foreign  securities  which are not  traded  on a U.S.  exchange  (not  including
American Depositary Receipts).

         The Series may also invest in the following  securities  and employ the
following  investment  techniques:  (1)  equity  securities;  (2)  fixed  income
securities;  (3) restricted  securities;  (4) lending portfolio securities;  (5)
entering into repurchase  agreements;  (6) purchasing  "when issued" or "forward
delivery"  securities;   (7)  investing  in  U.S.  Government  securities;   (8)
investments for temporary defensive purposes;  (9) securities of emerging growth
companies;  (10)  securities of foreign growth  companies;  (11) emerging market
securities;  (12) indexed securities;  (13) swaps and related  transactions (14)
options on  securities  and stock  indices;  (15) "yield  curve"  options;  (16)
futures contracts;  (17) options on futures  contracts;  (18) forward contracts;
and (19)  options on foreign  currencies  (see  "Investment  Techniques"  in the
Prospectus and the SAI). The Series'  investments  are subject to certain risks,
as described in the above-referenced  sections of the Prospectus and the SAI and
as described in the Prospectus under the caption "Additional Risk Factors."

Short  Sales:  If the  Series  anticipates  that the  price of a  security  will
decline,  it may sell the  security  short and borrow the same type of  security
from a broker or other  institution  to complete the sale. The Series may make a
profit or loss depending upon whether the market price of the security decreases
or increases
                                        2
<PAGE>

between the date of the short sale and the date on which the Series must replace
the borrowed security.  Possible losses from short sales differ from losses that
could be incurred from a purchase of a security, because losses from short sales
may be unlimited, whereas losses from purchases of a security can equal only the
total amount  invested.  The Series will  segregate  liquid  assets to cover its
short  sale  obligations.  The  Series  will not  sell  short  securities  whose
underlying value at the time of purchase exceeds 40% of its net assets.

4.   ANTICIPATED PORTFOLIO TURNOVER RATE

         It is anticipated  that the Series will have a portfolio  turnover rate
of up to 80% during its first year of operation.  Transactions costs incurred by
the  Series  and the  realized  capital  gains and  losses of the  Series may be
greater than a series with a lesser  portfolio  turnover rate. For a description
of the strategies which may be used by the Fund in trading portfolio securities,
see "Portfolio Transactions and Brokerage Commissions" in the SAI.

5.   MANAGEMENT OF THE SERIES

         The Adviser manages the New Discovery  Series pursuant to an Investment
Advisory  Agreement with the Trust on behalf of the Series dated April 30, 1998.
MFS receives a management fee, computed and paid monthly,  in an amount equal to
the annual rate of 0.90% of the average daily net assets of the Series.

         The Series' portfolio manager is Brian E. Stack, a Vice President of 
the Adviser.  Mr. Stack has been employed by the Adviser as a portfolio  manager
since 1993.

6.   EXPENSES

         Subject to termination  or revision at the sole  discretion of MFS, MFS
has agreed to bear the Series' expenses such that the Series' "Other  Expenses,"
which are defined to include all Series  expenses  (after taking into effect any
compensating balance and offset arrangements) except for management fees, taxes,
extraordinary  expenses,  and brokerage and  transactions  costs,  do not exceed
0.25% per annum of its average daily net assets (the "Maximum Percentage").  The
payments made by MFS on behalf of the Series under this  arrangement are subject
to reimbursement by the Series to MFS, which will be accomplished by the payment
of an expense  reimbursement  fee by the Series to MFS computed and paid monthly
at a  percentage  of its average  daily net assets for its then  current  fiscal
year, with a limitation that  immediately  after such payment the Series' "Other
Expenses" will not exceed the Maximum Percentage.  The obligation of MFS to bear
the  Series'  "Other  Expenses"  pursuant  to this  arrangement  and the  Fund's
obligation  to pay the  reimbursement  fees to MFS  terminates  on May 1,  2001,
provided  that in no event will MFS receive  reimbursement  fees from the Series
that exceed the amount of fees borne by MFS on behalf of the Series.

                      The date of this Supplement is May 1, 1998.
<PAGE>


The Prospectus  dated September 30, 1997 of the MFS Variable  Insurance Trust is
incorporated  in  this  Post-Effective  Amendment  No.  10 by  reference  to the
Prospectus of MFS Variable  Insurance Trust filed by the Registrant  pursuant to
rule 497(j) under the  Securities  Act of 1933, as amended (File No.  33-74668),
with the Securities and Exchange Commission on October 1, 1997.

<PAGE>


The  Statement of  Additional  Information  dated  September 30, 1997 of the MFS
Variable Insurance Trust is incorporated in this Post-Effective Amendment No. 10
by reference to the  Prospectus  of MFS  Variable  Insurance  Trust filed by the
Registrant  pursuant to rule 497(j) under the Securities Act of 1933, as amended
(File No. 33-74668),  with the Securities and Exchange  Commission on October 1,
1997.

<PAGE>


The Annual Reports to Shareholders  of the Series,  each dated December 31, 1996
(File No. 811-8326), are incorporated in this Post-Effective Amendment No. 10 by
reference  to the Annual  Reports  to  Shareholders  of the Series  filed by the
Registrant with the Securities and Exchange Commission on March 4, 1997.



<PAGE>


The Semi-Annual  Reports to Shareholders of the Series, each dated June 30, 1997
(File No. 811-8326), are incorporated in this Post-Effective Amendment No. 10 by
reference to the  Semi-Annual  Reports to  Shareholders  filed by the Registrant
with the Securities and Exchange Commission on August 28, 1997.


<PAGE>


                                     PART C


Item 24. (a)      Financial Statements and Exhibits

         All Series (except MFS/Foreign & Colonial Emerging Markets Equity
         Series)

                  Financial Statements Included in Parts A and B:

                  Included in Part A of this Registration Statement:
                         Financial Highlights for:

                         the MFS Emerging Growth Series for the period from
                         commencement of investment operations on July 24, 1995 
                         to December 31, 1996;

                         the MFS Value Series and the MFS Limited Maturity
                         Series for the period from  commencement of investment
                         operations on August 14, 1996 to December 31, 1996;

                         the MFS Research Series and the MFS High Income
                         Series for the period from  commencement of investment
                         operations on July 26, 1995 to December 31, 1996;

                         the MFS Total Return Series, the MFS Utilities
                         Series and the MFS Money Market Series for the period
                         from commencement of investment operations on January
                         3, 1995 to December 31, 1996;

                         the MFS Growth With Income Series for the period
                         from commencement of investment operations on October 
                         9, 1995 to December 31, 1996;

                         the MFS World Governments Series for the period
                         from commencement of investment operations on June 14,
                         1994 to December 31, 1996; and

                         the MFS Bond Series for the period from
                         commencement of investment operations on October 24, 
                         1995 to December 31, 1996.

                  Included in Part B of this Registration Statement:

                         At December 31, 1996:
                                    Portfolio of Investments*
                                    Statement of Assets and Liabilities*

                         For the year ended December 31, 1996:
                                    Statement of Operations*

                         For the two years in the period ended December 31, 
                         1996:
                                    Statement of Changes in Net Assets*
<PAGE>

                  Statement  of  Operations*  and  Statement  of  Changes in Net
                  Assets* for:

                         the MFS Emerging Growth Series for the period from
                         commencement of investment operations on July 24, 1995 
                         to December 31, 1996;

                         the MFS Value Series and the MFS Limited Maturity
                         Series for the period from  commencement of investment
                         operations on August 14, 1996 to December 31, 1996;

                         the MFS Research Series and the MFS High Income
                         Series for the period from commencement of investment  
                         operations on July 26, 1995 to December 31, 1996;

                         the MFS Growth With Income Series for the period
                         from commencement of investment operations on October 
                         9, 1995 to December 31, 1996;

                         the MFS Total Return Series, the MFS Utilities
                         Series and the MFS Money  Market Series for the period
                         from  commencement  of investment operations on 
                         January 3, 1995 to December 31, 1996;

                         the MFS World Governments Series for the two years
                         in the period ended December 31, 1996; and

                         the MFS Bond Series for the period from
                         commencement of investment operations on October 24, 
                         1995 to December 31, 1996.

         MFS/Foreign & Colonial Emerging Markets Equity Series

                  Financial Statements Included in Parts A and B:

                  Included in Part A of this Registration Statement:
                           None

                  Included in Part B of this Registration Statement:

                           At December 31, 1996:
                                    Statement of Assets and Liabilities
                                    Opinion of Independent Auditors

                  At June 30, 1997:
                                    Statement of Assets and Liabilities
                                    Opinion of Independent Auditors

- ------------------------
* Incorporated  by reference to the Annual Reports to Shareholders of the Series
(with the exception of the MFS Strategic  Fixed Income Series,  now known as the
MFS/Foreign & Colonial Emerging Markets Equity Series),  each dated December 31,
1996, filed with the SEC via EDGAR on March 4, 1997.
<PAGE>

         (b)      Exhibits

                   1       (a)     Declaration of Trust, dated January 28,
                                   1994.  (3)

                           (b)     Amendment to Declaration of Trust -
                                   Designation of Series of Shares dated January
                                   31, 1994.  (3)

                           (c)     Amendment to Declaration of Trust -
                                   Redesignation of Series, dated June 1, 
                                   1995.  (3)

                           (d)     Amendment to Declaration of Trust - 
                                   Redesignation of Series, dated April 25, 
                                   1996. (4)
   

                           (e)     Certificate of Amendment to Declaration of 
                                   Trust - Redesignation of Series.  (9)

                           (f)     Amendment to Declaration of Trust -
                                   Designation of MFS New Discovery Series dated
                                   February 26, 1998; filed herewith.
    

                   2               By-Laws, dated January 28, 1994.  (3)

                   3               Not Applicable.

                   4               Not Applicable.
   

                   5       (a)     Investment Advisory Agreement by and between 
                                   Registrant and Massachusetts  Financial  
                                   Services Company,  dated April 14, 1994 as 
                                   amended and restated on October 15, 1997; 
                                   filed herewith.

                           (b)     Sub-Advisory Agreement by and between
                                   Massachusetts Financial Services Company and 
                                   Foreign & Colonial Management Ltd., dated 
                                   October 16, 1997; filed herewith.

                           (c)     Sub-Advisory Agreement by and between Foreign
                                   & Colonial Management Ltd. and Foreign & 
                                   Colonial Emerging Markets Limited, dated 
                                   October 16, 1997; filed herewith.

                           (d)     Form of Investment Advisory Agreement
                                   between the Registrant and Massachusetts 
                                   Financial Services Company on behalf of
                                   MFS New Discovery Series; filed herewith.
    

                   6               Distribution Agreement between Registrant
                                   and Massachusetts Investors Services, Inc., 
                                   dated April 14, 1994.  (3)

                   7               Not Applicable.

                   8               Custodian Agreement between Registrant and
                                   Investors Bank & Trust Company, dated April 
                                   14, 1994.  (3)
<PAGE>

                   9       (a)     Shareholder Servicing Agent Agreement
                                   between Registrant and MFS Service Center, 
                                   dated April 14, 1994.  (3)

                           (b)     Dividend Disbursing Agency Agreement
                                   between Registrant and State Street Bank and 
                                   Trust, dated April 14, 1994.  (3)

                           (c)     Loan Agreement among MFS Borrowers and The
                                   First National Bank of Boston, dated as of 
                                   February 21, 1995  (2)

                           (d)     Third  Amendment  dated February 14, 1997 to 
                                   Loan Agreement  dated February 21, 1995 by 
                                   and among the Banks named  therein  and The 
                                   First  National  Bank of Boston. (7)

                           (e)     Master Administrative Services Agreement,
                                   dated March 1, 1997.  (5)
   

                  10               Opinion and Consent of Counsel filed with 
                                   Registrant's Rule 24f-2 Notice for fiscal 
                                   year ended December 31, 1996 on February 28, 
                                   1997 (to be provided for fiscal year ended 
                                   December 31, 1997).

                  11               Consent of Deloitte & Touche LLP; [to be
                                   provided]
    

                  12               Not Applicable.

                  13               Investment Representation Letter.  (3)

                  14               Not Applicable.

                  15               Not Applicable.

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

                  17       (a)     Financial Data Schedules for each
                                   operational Series of the Trust for the year 
                                   ended December 30, 1996.  (6)
   

                           (b)     Financial Data Schedule for MFS Strategic
                                   Fixed Income Series for the six months ended 
                                   June 30, 1997.  (9)
    
                  18               Not Applicable.



<PAGE>

   
                  Power of Attorney dated August 12, 1994.  (3)

                  Power of Attorney dated February 19, 1998; filed herewith
    
- ----------------------------
(1)  Incorporated by reference to MFS Municipal Series Trust (File Nos.
     2-92915 and 811-4096) Post-Effective Amendment No. 26 filed with the SEC
     via EDGAR on February 22, 1995.
(2)  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.
(3)  Incorporated  by reference to Registrant's  Post-Effective  Amendment No. 4
     filed with the SEC via EDGAR on October 26, 1995.
(4)  Incorporated  by reference to Registrant's  Post-Effective  Amendment No. 6
     filed with the SEC via EDGAR on May 30, 1996.
(5)   Incorporated by reference to MFS/Sun Life Series Trust (File Nos.
     2-83616 and 811-3732) Post-Effective Amendment No. 19 filed with the SEC
     via EDGAR on March 18, 1997.
(6)  Incorporated  by reference to Registrant's  Post-Effective  Amendment No. 7
     filed with the SEC via EDGAR on April 29, 1997.
(7)  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.
(8)  Incorporated  by reference to Registrant's  Post-Effective  Amendment No. 8
     filed with the SEC via EDGAR on August 1, 1997.
   

(9)  Incorporated  by reference to Registrant's  Post-Effective  Amendment No. 9
     filed with the SEC via EDGAR on October 1, 1997.
    

Item 25. Persons Controlled by or under Common Control with Registrant

         Not applicable.

Item 26. Number of Holders of Securities

         MFS Emerging Growth Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  56
                  (without par value)        (as of January 31, 1998)
    

         MFS Value Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                   8
                  (without par value)        (as of January 31, 1998)
    

         MFS Research Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
<PAGE>
   
         Shares of Beneficial Interest                  39
                  (without par value)       (as of  January 31, 1998)
    

         MFS Growth With Income Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  27
                  (without par value)       (as of January 31, 1998)
    

         MFS Total Return Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                 26
                  (without par value)       (as of January 31, 1998)
    

         MFS Utilities Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  18
                  (without par value)       (as of January 31, 1998)
    

         MFS High Income Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  13
                  (without par value)       (as of January 31, 1998)
    

         MFS World Governments Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                 26
                  (without par value)       (as of January 31, 1998)
    
<PAGE>


   
         MFS/Foreign & Colonial Emerging Markets Equity Series
    

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  7
                  (without par value)       (as of January 31, 1998)
    

         MFS Bond Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                 12
                  (without par value)       (as of January 31, 1998)
    

         MFS Limited Maturity Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  8
                  (without par value)       (as of January 31, 1998)
    

         MFS Money Market Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders
   

         Shares of Beneficial Interest                  8
                  (without par value)       (as of January 31, 1998)


         MFS New Discovery Series

                  (1)                                  (2)
         Title of Class                      Number of Record Holders

         Shares of Beneficial Interest                  0
                  (without par value)       (as of January 31, 1998)
    

Item 27. Indemnification

         Reference  is  hereby  made  to (a)  Section  5.3  of the  Registrant's
Declaration  of Trust;  and (b)  Section 9 of the  Shareholder  Servicing  Agent
Agreement between the Registrant and MFS Service Center, Inc.
<PAGE>

         The Trustees and officers of the  Registrant  and the  personnel of the
Registrant's  investment  adviser  and  distributor  will be  insured  as of the
effective  date of this  Registration  Statement  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.


<PAGE>


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
    
<PAGE>
   

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.
    
<PAGE>
   
         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
    
<PAGE>
   

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.
    
<PAGE>
   

         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.
    

<PAGE>
   

         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.
    

<PAGE>
   

         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.
    


<PAGE>

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

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

         Investors Bank & Trust                   89 South Street
          Company (custodian)                     Boston, MA  02111

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

         The Registrant's  corporate documents are kept by the Registrant at its
offices.   Portfolio  brokerage  orders,  other  purchase  orders,  reasons  for
brokerage  allocation and lists of persons  authorized to transact  business for
the  Registrant  are kept by  Massachusetts  Financial  Services  Company at 500
Boylston Street,  Boston,  Massachusetts 02116.  Shareholder account records are
kept by MFS Service Center, Inc. at 500 Boylston Street,  Boston,  Massachusetts
02116.  Transaction  journals,  receipts  for the  acceptance  and  delivery  of
securities  and cash,  ledgers and trial  balances are kept by Investors  Bank &
Trust Company, 89 South Street, Boston, MA 02111.

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  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 27th day of February, 1998.

                                        MFS VARIABLE INSURANCE TRUST


                                        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 February 27, 1998.

     SIGNATURE                          TITLE


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


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


WILLIAM R. GUTOW*          Trustee
William R. Gutow


NELSON J. DARLING, JR.*    Trustee
Nelson J. Darling, Jr.


                                        *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 (1) a
                                    Power of  Attorney  dated  August 12,  1994,
                                    incorporated    by    reference    to    the
                                    Registrant's Post- Effective Amendment No. 4
                                    filed electronically with the Securities and
                                    Exchange Commission on October 26, 1995; and
                                    (ii) a Power of Attorney  dated February 19,
                                    1998, filed herewith.


<PAGE>


                             POWER OF ATTORNEY

                      MFS Variable Insurance Trust


         The   undersigned   officer  of  MFS  Variable   Insurance  Trust  (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.

   1 (f)            Amendment to Declaration of Trust - 
                     Designation of New Discovery
                     Series dated February 26, 1998.

   5 (a)            Investment  Advisory  Agreement by and 
                     between  Registrant  and
                     Massachusetts  Financial  Services 
                     Company,  dated April 14, 1994 as 
                     amended and restated on October 15, 1997.

     (b)            Sub-Advisory Agreement by and between 
                     Massachusetts Financial Services 
                     Company and Foreign & Colonial 
                     Management Ltd., dated October 16, 1997.

     (c)            Sub-Advisory Agreement by and between 
                     Foreign & Colonial Management Ltd. and 
                     Foreign & Colonial Emerging Markets Limited,
                     dated October 16, 1997.

     (d)            Form of Investment Advisory Agreement 
                     between the Registrant and Massachusetts 
                     Financial Services Company on behalf of 
                     MFS New Discovery Series.

<PAGE>
                                                          EXHIBIT NO. 99.1(f)

                      MFS VARIABLE INSURANCE TRUST

                       CERTIFICATION OF AMENDMENT
                      TO THE DECLARATION OF TRUST


                     ESTABLISHMENT AND DESIGNATION
                              OF SERIES



         Pursuant  to Section 6.9 of the Amended  and  Restated  Declaration  of
Trust dated  January 24, 1996, as amended (the  "Declaration"),  of MFS Variable
Insurance Trust (the "Trust"),  the undersigned  Trustees of the Trust,  being a
majority of the  Trustees of the Trust,  hereby  establish  and  designate a new
series  of Shares  (as  defined  in the  Declaration),  such  series to have the
following special and relative rights:

         1.     The new series shall be designated:

                 - MFS New Discovery Series

         2.     The  series  shall  be   authorized   to  invest  in  cash,
                securities,  instruments and other property as from time to time
                described in the Trust's then currently  effective  registration
                statement under the Securities Act of 1933, as amended,  and the
                Investment  Company  Act of  1940,  as  amended,  to the  extent
                pertaining to the offering of Shares of such series.  Each Share
                of the series shall be redeemable, shall be entitled to one vote
                or fraction  thereof in respect of a fractional share on matters
                on which Shares of the series  shall be entitled to vote,  shall
                represent a pro rata beneficial interest in the assets allocated
                or belonging to the series, and shall be entitled to receive its
                pro rata share of the net assets of the series upon  liquidation
                of  the   series,   all  as  provided  in  Section  6.9  of  the
                Declaration.

         3.     Shareholders  of each series shall vote separately as a class on
                any matter to the extent  required  by, and any matter  shall be
                deemed to have been  effectively  acted upon with respect to the
                series  as  provided  in Rule  18f-2,  as  from  time to time in
                effect, under the Investment Company Act of 1940, as amended, or
                any successor rule, and by the Declaration.

         4.     The assets and liabilities of the Trust shall be allocated among
                the previously  established and existing series of the Trust and
                such new series as set forth in Section 6.9 of the Declaration.
<PAGE>

         5.     Subject to the  provisions  of Section 6.9 and Article IX of the
                Declaration,  the Trustees  (including  any successor  Trustees)
                shall  have the  right  at any  time  and  from  time to time to
                reallocate  assets and expenses or to change the  designation of
                any series now or hereafter created,  or to otherwise change the
                special  and  relative  rights  of any  such  establishment  and
                designation of series of Shares.

         Pursuant to Section 6.9(h) of the Declaration, this instrument shall be
effective upon the execution by a majority of the Trustees of the Trust.

         IN  WITNESS  WHEREOF,  a  majority  of the  Trustees  of the Trust have
executed this amendment, in one or more counterparts,  all constituting a single
instrument, as an instrument under seal in The Commonwealth of Massachusetts, as
of this 26th day of  February,  1998 and  further  certify,  as  provided by the
provisions of Section  9.3(d) of the  Declaration,  that this amendment was duly
adopted by the  undersigned  in accordance  with the second  sentence of Section
9.3(a) of the Declaration.



NELSON J. DARLING, JR.
Nelson J. Darling, Jr.
75 Beach Bluff Avenue
Swampscott, MA  01907



WILLIAM R. GUTOW
William R. Gutow
3 Rue Dulac
Dallas TX   75230

<PAGE>
                                                             EXHIBIT NO. 99.5(a)

                AMENDED AND RESTATED INVESTMENT ADVISORY AGREEMENT



AMENDED AND RESTATED INVESTMENT ADVISORY AGREEMENT, dated as of this 14th day of
April,  1994 as amended and restated on this 16th day of October,  1997,  by and
between MFS  VARIABLE  INSURANCE  TRUST,  a  Massachusetts  business  trust (the
"Trust")  on behalf of the  series of the  Trust  listed on  Exhibit A  attached
hereto  (referred to individually as a "Fund" and  collectively as the "Funds"),
and  Massachusetts  Financial  Services  Company,  a Delaware  corporation  (the
"Adviser").

                               WITNESSETH:

        WHEREAS,  the Trust is engaged in business  as an  open-end  investment
company registered under the Investment Company Act of 1940;

         WHEREAS, the Adviser is willing to provide business management services
to each Fund on the terms and conditions hereinafter set forth; and

         WHEREAS,  the parties  hereto  entered into this Agreement on April 14,
1994,  and  amended  and  restated  this  Agreement  on October 16, 1997 for the
purposes  of (i)  making  certain  changes  with  respect to the  MFS/Foreign  &
Colonial  Emerging  Markets Equities Series (formerly known as the MFS Strategic
Fixed Income Series),  such changes having been approved by the sole shareholder
of this Series on October 16, 1997;  and (ii) making other minor and  conforming
changes;

         NOW, THEREFORE, in consideration of the mutual covenants and Agreements
of the parties  hereto as herein set forth,  the parties  covenant  and agree as
follows:

         ARTICLE 1: Duties of the Adviser.  The Adviser  shall provide each Fund
with such investment  advice and supervision as the latter may from time to time
consider necessary for the proper management of its funds. The Adviser shall act
as Adviser to each Fund and as such shall  furnish  continuously  an  investment
program  and  shall  determine  from  time  to time  what  securities  shall  be
purchased,  sold or exchanged  and what portion of the assets of each Fund shall
be held  uninvested,  subject always to the  restrictions of the Trust's Amended
and  Restated  Declaration  of Trust,  dated  January 24, 1996 and  By-Laws,  as
amended from time to time  (respectively,  the "Declaration" and the "By-Laws"),
and to the provisions of the Investment Company Act of 1940. Should the Trustees
at any time, however,  make any determination as to investment policy and notify
the Adviser thereof in writing, the Adviser shall be bound by such determination
for the period,  if any,  specified in such notice or until  similarly  notified
that such  determination has been revoked.  The Adviser shall take, on behalf of
each Fund,  all actions  which it deems  necessary to implement  the  investment
policies determined as provided above, and in particular to place all orders for
the  purchase  or sale of  portfolio  securities  for each Fund's
                                        -1-
<PAGE>
account with  brokers or dealers  selected by it, and to that end the Adviser is
authorized  as the agent of each Fund to give  instructions  to the Custodian of
each Fund as to deliveries of securities and payments of cash for the account of
each Fund. In  connection  with the selection of such brokers or dealers and the
placing of such orders,  the Adviser is directed to seek for each Fund execution
at the  most  favorable  price by  responsible  brokerage  firms  at  reasonably
competitive  commission  rates. In fulfilling this requirement the Adviser shall
not be deemed to have acted unlawfully or to have breached any duty,  created by
this Agreement or otherwise,  solely by reason of its having caused each Fund to
pay a broker  or  dealer an amount of  commission  for  effecting  a  securities
transaction in excess of the amount of commission another broker or dealer would
have charged for effecting that transaction,  if the Adviser  determined in good
faith that such amount of commission  was reasonable in relation to the value of
the brokerage and research services provided by such broker or dealer, viewed in
terms  of  either  that   particular   transaction  or  the  Adviser's   overall
responsibilities  with respect to each Fund and to other  clients of the Adviser
as to which the Adviser exercises investment discretion.

         With respect to the  MFS/Foreign  & Colonial  Emerging  Markets  Equity
Series  only,  the  Adviser  may  from  time  to  time  enter  into   investment
sub-advisory  agreements with one or more investment  advisers (a "Sub-Adviser")
to the Fund to  perform  some or all of the  services  for which the  Adviser is
responsible  pursuant to this  Article 1 upon such terms and  conditions  as the
Adviser may determine provided that such investment sub-advisory agreements have
been approved by a majority of the Trustees of the Trust who are not  interested
persons of the Trust,  the Adviser or the  Sub-Adviser and by vote of a majority
of the outstanding  voting securities of the Fund. The Adviser may terminate the
services of any  Sub-Adviser  at any time in its sole  discretion,  and shall at
such time assume the  responsibilities  of such  Sub-Adviser  unless and until a
successor  Sub-Adviser is selected.  Subject to the provisions of Article 6, the
Adviser  shall not be liable for any error of  judgment or mistake of law by any
Sub-Adviser  or  for  any  loss  arising  out  of  any  investment  made  by any
Sub-Adviser  or for any act or omission in the execution  and  management of the
Fund by any Sub-Adviser.

         ARTICLE 2:  Allocation  of Charges  and  Expenses.  The  Adviser  shall
furnish at its own expense  investment  advisory  and  administrative  services,
office  space,  equipment  and clerical  personnel  necessary  for servicing the
investments  of  each  Fund  and  maintaining  the  Trust's  organization,   and
investment  advisory  facilities  and  executive and  supervisory  personnel for
managing the investments and effecting the portfolio  transactions of each Fund.
The Adviser shall arrange, if desired by the Trust, for Directors,  officers and
employees of the Adviser to serve as  Trustees,  officers or agents of the Trust
if duly elected or appointed to such  positions and subject to their  individual
consent and to any  limitations  imposed by law. It is understood that the Trust
will pay all of its own expenses including, without limitation,  compensation of
Trustees not affiliated with the Adviser,  governmental fees,  interest charges,
taxes,  membership  dues in the Investment  Company  Institute  allocable to the
Trust,  fees and expenses of independent  auditors,  of legal counsel and of any
transfer agent, registrar or dividend disbursing agent of the Trust, expenses of
repurchasing and redeeming shares and servicing shareholder  accounts,  expenses
of preparing,  printing and mailing stock certificates,  prospectuses,  periodic
reports,  notices  and proxy  statements  to  shareholders  and to  governmental
officers  and  commissions,  brokerage  and other  expenses  connected  with the
execution,   recording  and

                                        -2-
<PAGE>

settlement of portfolio  security  transactions,  insurance  premiums,  fees and
expenses of the custodian for all services to the Trust,  including  safekeeping
of funds and  securities,  keeping of books and accounts and  calculation of the
net asset value of shares of each Fund,  expenses of shareholder  meetings,  and
expenses  relating to the issuance,  registration and qualification of shares of
the Trust.

         ARTICLE 3: Compensation of the Adviser. For the services to be rendered
and the  facilities to be furnished as provided in Articles 1 and 2 above,  each
Fund shall pay to the  Adviser an  investment  advisory  fee  computed  and paid
monthly at the annual  rate as listed on Exhibit  B,  attached  hereto,  of each
Fund's average daily net assets.

         If the  Adviser  shall  serve  for less  than the  whole of any  period
specified in this Article 3, the compensation to the Adviser shall be prorated.

         ARTICLE 4: Special Services.  Should the Trust have occasion to request
the  Adviser  to perform  services  not herein  contemplated  or to request  the
Adviser to arrange  for the  services of others,  the  Adviser  will act for the
Trust  upon  request  to the  best of its  ability,  with  compensation  for the
Adviser's  services to be agreed upon with  respect to each such  occasion as it
arises.

         ARTICLE 5:  Covenants of the Adviser.  The Adviser  agrees that it will
not  deal  with  itself,  or with  the  Trustees  of the  Trust  or the  Trust's
distributor  as principals  in making  purchases or sales of securities or other
property for the account of any Fund,  will not take a long or short position in
the shares of any Fund except as provided  by the  Declaration,  and will comply
with all other provisions of the Declaration and By-Laws relative to the Adviser
and its Directors and officers.

         ARTICLE 6:  Limitation  of Liability of the Adviser.  The Adviser shall
not 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 any Fund,  except  for  willful  misfeasance,  bad faith or gross
negligence in the performance of its duties, or by reason of reckless  disregard
of its  obligations  and duties  hereunder.  As used in this Article 6, the term
"Adviser" shall include Directors, officers and employees of the Adviser as well
as the corporation itself.

         ARTICLE 7:  Activities  of the Adviser.  The services of the Adviser to
the Trust are not to be deemed to be exclusive, the Adviser being free to render
services to others.  The Adviser may permit  other fund clients to use the words
"Massachusetts  Financial" or "MFS" in their names. The Trust agrees that if the
Adviser  shall for any reason no longer  serve as the Adviser to the Trust,  the
Trust  and each  Fund  will  each  change  its name so as to  delete  the  words
"Massachusetts  Financial" or "MFS". It is understood  that Trustees,  officers,
and shareholders of the Trust are or may be or become interested in the Adviser,
as Directors, officers, employees, or otherwise and that Directors, officers and
employees of the Adviser are or may become similarly interested in the Trust and
that the Adviser may be or become  interested in the Trust as a  shareholder  or
otherwise.

                                        -3-
<PAGE>

         ARTICLE 8: Duration, Termination and Amendments of this Agreement. This
Agreement  shall become  effective  with respect to each Fund on the date of its
execution and shall govern the relations between the parties hereto  thereafter,
and shall remain in force with respect to a Fund until August 1, 1999,  on which
date it will  terminate with respect to that Fund unless its  continuance  after
August 1, 1999, is specifically  approved at least annually (i) by the vote of a
majority  of the  Trustees  of the Trust who are not  interested  persons of the
Trust or of the  Adviser at a meeting  specifically  called  for the  purpose of
voting on such approval,  and (ii) by the Trustees of the Trust, or by vote of a
majority  of the  outstanding  voting  securities  of that Fund.  The  aforesaid
requirement  that  continuance  of this Agreement be  "specifically  approved at
least  annually"  shall be construed in a manner  consistent with the Investment
Company Act of 1940 and the Rules and Regulations thereunder.

         This Agreement may be terminated as to any Fund at any time without the
payment  of  any  penalty  by the  Trustees  or by  vote  of a  majority  of the
outstanding voting securities of that Fund, or by the Adviser,  on not more than
sixty days' nor less that thirty days' written  notice to the other party.  This
Agreement shall automatically terminate in the event of its assignment.

         This  Agreement  may be amended  with  respect to any Fund only if such
amendment is approved by vote of a majority of the outstanding voting securities
of that Fund.

         The terms "vote of a majority of the  outstanding  voting  securities,"
"assignment,"  "affiliated person," and "interested  persons," when used in this
Agreement,  shall  have the  respective  meanings  specified  in the  Investment
Company Act of 1940 and the Rules and Regulations thereunder,  subject, however,
to such  exemptions as may be granted by the Securities and Exchange  Commission
under said Act.

         ARTICLE 9: Record Keeping.  The Adviser will maintain records in a form
acceptable to the Trust and in compliance  with the rules and regulations of the
Securities  and  Exchange  Commission,  including  but not  limited  to  records
required to be maintained by Section 31(a) of the Investment Company Act of 1940
and the rules  thereunder,  which at all times will be the property of the Trust
and will be available for inspection and use by the Trust.

         ARTICLE 10: Limitation of Liability of the Trustees and Shareholders. A
copy of the  Declaration  of the Trust is on file with Secretary of State of The
Commonwealth  of  Massachusetts.   The  parties  hereto   acknowledge  that  the
obligations of or arising out of this instrument are not binding upon any of the
Trust's trustees, officers, employees, agents or shareholders individually,  but
are binding solely upon the assets and property of the Trust in accordance  with
its  proportionate  interest  hereunder.  If this  instrument is executed by the
Trust  on  behalf  of one or  more  series  of the  Trust,  the  parties  hereto
acknowledge  that the assets  and  liabilities  of each  series of the Trust are
separate  and  distinct  and  that the  obligations  of or  arising  out of this
instrument are binding solely upon the assets or property of the series on whose
behalf the Trust has executed  this  instrument.  If the Trust has executed this
instrument on behalf of one or more series of the Trust, the parties hereto also
agree that the  obligations  of each series

                                        -4-
<PAGE>

hereunder shall be several and not joint,  in accordance with its  proportionate
interest  hereunder,  and the parties  hereto  agree not to proceed  against any
series for the obligations of another series.


         IN WITNESS  WHEREOF,  the  parties  have caused  this  Agreement  to be
executed and  delivered  in their names and on their behalf by the  undersigned,
thereunto duly authorized,  and their respective seals to be hereto affixed, all
as of the day and year first written above. The undersigned Trustee of the Trust
has  executed  this  Agreement  not  individually,  but  as  Trustee  under  the
Declaration  and the  obligations  of this Agreement are not binding upon any of
the Trustees, officers or shareholders of the Trust, individually, but bind only
the Trust estate.


                                        MFS VARIABLE INSURANCE TRUST



                                        By:      A. KEITH BRODKIN
                                                 A. Keith Brodkin
                                                 Chairman and Trustee



                                        MASSACHUSETTS FINANCIAL SERVICES COMPANY



                                        By:      JEFFREY L. SHAMES
                                                 Jeffrey L. Shames
                                                 President

                                        -5-

<PAGE>
                                                                   EXHIBIT A


                         MFS VARIABLE INSURANCE TRUST


                          MFS Emerging Growth Series

                               MFS Value Series

                             MFS Research Series

                         MFS Growth With Income Series

                            MFS Total Return Series

                              MFS Utilities Series

                             MFS High Income Series

                          MFS World Governments Series

            MFS/Foreign & Colonial Emerging Markets Equity Series

                                MFS Bond Series

                          MFS Limited Maturity Series

                            MFS Money Market Series

                                        -6-

<PAGE>


                                                                 EXHIBIT B



                                MANAGEMENT FEES


         SERIES                         % OF AVERAGE DAILY NET ASSETS


MFS Emerging Growth Series                             0.75

MFS Value Series                                       0.75

MFS Research Series                                    0.75

MFS Growth With Income Series                          0.75

MFS Total Return Series                                0.75

MFS Utilities Series                                   0.75

MFS High Income Series                                 0.75

MFS World Government Series                            0.75

MFS/Foreign & Colonial Emerging Markets Equity Series  1.25

MFS Bond Series                                        0.60

MFS Limited Maturity Series                            0.55

MFS Money Market Series                                0.50

                                        -7-




<PAGE>
                                                            EXHIBIT NO. 99.5(b)

                         SUB-ADVISORY AGREEMENT


         SUB-ADVISORY  AGREEMENT,  dated this 16th day of October,  1997, by and
between  MASSACHUSETTS  FINANCIAL SERVICES COMPANY, a Delaware  corporation (the
"Adviser") and FOREIGN & COLONIAL MANAGEMENT LTD., a company  incorporated under
the laws of England and Wales (the "Sub-Adviser").

                                  WITNESSETH:

         WHEREAS,  the Adviser provides  MFS/Foreign & Colonial Emerging Markets
Equity  Series  (the  "Fund"),  a series of MFS  Variable  Insurance  Trust (the
"Trust"), an open-end investment company registered under the Investment Company
Act of 1940,  as amended (the "1940  Act"),  business  services  pursuant to the
terms and conditions of an investment  advisory agreement dated October 16, 1997
(the "Advisory  Agreement")  between the Adviser and the Trust, on behalf of the
Fund; and

         WHEREAS,  the Sub-Adviser is willing to provide services to the Adviser
on the terms and conditions hereinafter set forth.

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
of the parties  hereto as herein set forth,  the parties  covenant  and agree as
follows:

         1.  Duties  of  the  Sub-Adviser.  Subject  to the  supervision  of the
Trustees of the Trust and the Adviser,  the  Sub-Adviser  will:  (a) manage such
portion of the Fund's assets as the Adviser and  Sub-Adviser  shall from time to
time mutually  designate (the "Designated  Assets") on behalf of the Fund (i) in
accordance  with the Fund's  investment  objective,  policies and limitations as
stated in the Fund's then current Prospectus (the "Prospectus") and Statement of
Additional  Information (the "Statement"),  and the Trust's Amended and Restated
Declaration  of Trust dated  January 24, 1996 and Amended and Restated  By-Laws,
each as from time to time in effect  (respectively,  the  "Declaration"  and the
"By-Laws") (the obligations of Sub-Adviser  under this clause (i) are contingent
upon  the  Adviser  fulfilling  its  obligations  under  Section  2) and (ii) in
compliance with the 1940 Act and the rules,  regulations and orders  thereunder;
(b) make  investment  decisions  for the Fund  with  respect  to the  Designated
Assets;  (c) place purchase and sale orders for portfolio  transactions  for the
Fund with respect to the Designated  Assets;  (d) except to the extent performed
by the Adviser, manage otherwise uninvested cash assets of the Fund with respect
to the  Designated  Assets;  (e) as the  agent of the  Fund,  give  instructions
(including trade tickets) to the custodian and any  sub-custodian of the Fund as
to deliveries of  securities,  transfers of currencies  and payments of cash for
the account of the Fund with respect to the Designated  Assets (the  Sub-Adviser
shall promptly notify the Adviser of such instructions); (f) employ professional
portfolio managers to provide research services to the Fund; (g) attend periodic
meetings of the Board of Trustees of the Trust and (h) assist in  obtaining  all
the registrations, qualifications and consents, on behalf of the Fund, which are

                                        -1-
<PAGE>


necessary for the Fund to purchase and sell assets in each  jurisdiction  (other
than the United  States) in which the Designated  Assets are to be invested.  In
providing  these  services,   the  Sub-Adviser  will  furnish   continuously  an
investment  program with respect to the Designated Assets. The Sub-Adviser shall
be responsible for monitoring the Fund's  compliance  with the  Prospectus,  the
Statement,  the  Declaration,  the  By-Laws  and the  1940  Act  and the  rules,
regulations  and  orders  thereunder  and  in  monitoring  such  compliance  the
Sub-Adviser shall do so in the functional  currency of the Fund. The Sub-Adviser
shall only be responsible for compliance with the  above-mentioned  restrictions
in  regards  to the  Designated  Assets.  The  Adviser  agrees  to  provide  the
Sub-Adviser  with  such  assistance  as  may  be  reasonably  requested  by  the
Sub-Adviser in connection with its activities  under this Agreement,  including,
without limitation,  information concerning the Fund, its funds available, or to
become  available,  for  investment  and  generally as to the  conditions of the
Fund's affairs. From time to time the Adviser will notify the Sub-Adviser of the
aggregate  U.S.  Dollar amount of the Designated  Assets.  The Adviser will have
responsibility for exercising proxy,  consent and other rights pertaining to the
Fund's portfolio  securities;  provided,  however, that the Sub-Adviser will, as
requested,  make  recommendations  to the Adviser as to the manner in which such
proxy, consent and other rights shall be exercised.

         Should the  Trustees  of the Trust or the  Adviser at any time make any
determination  as to  investment  policy and notify the  Sub-Adviser  thereof in
writing, the Sub-Adviser shall be bound by such determination for the period, if
any, specified in such notice or until notified that such determination has been
revoked. Further, the Adviser or the Trustees of the Trust may at any time, upon
written  notice  to the  Sub-Adviser,  suspend  or  restrict  the  right  of the
Sub-Adviser  to determine what assets of the Fund shall be purchased or sold and
what  portion,  if any, of the Fund's  assets  shall be held  uninvested.  It is
understood that the Adviser  undertakes to discuss with the Sub-Adviser any such
determinations  of investment  policy and any such suspension or restrictions on
the right of the  Sub-Adviser  to  determine  what  assets of the Fund  shall be
purchased or sold or held uninvested, prior to the implementation thereof.

         2. Certain  Information to the  Sub-Adviser.  Copies of the Prospectus,
the  Statement,  the  Declaration  and the By-Laws  have been  delivered  to the
Sub-Adviser.  The Adviser agrees to notify the Sub-Adviser of each change in the
investment  objectives,  policies and  limitations of the Fund and to provide to
the  Sub-Adviser  as  promptly  as  practicable  copies  of all  amendments  and
supplements to the Prospectus,  the Statement,  the Declaration and the By-Laws.
In  addition,  the  Adviser  will  promptly  provide  the  Sub-Adviser  with any
procedures  applicable  to the  Sub-Adviser  adopted  from  time  to time by the
Trustees of the Trust and agrees to provide  promptly to the Sub-Adviser  copies
of all amendments thereto.

         3.  Execution  of  Certain  Documents.  Subject  to any  other  written
instructions  of the Adviser and the Trustees of the Trust,  the  Sub-Adviser is
hereby  appointed the Adviser's  and the Trust's agent and  attorney-in-fact  to
execute account documentation,  agreements, contracts and other documents as the
Sub-Adviser  shall be requested by brokers,  dealers,  counterparties  and other
persons in connection with its management of the Designated Assets.

                                        -2-
<PAGE>

         4. Reports.  The Sub-Adviser shall furnish to the Trustees of the Trust
or the  Adviser,  or  both,  as may be  appropriate,  quarterly  reports  of its
activities  on behalf of the Fund with  respect  to the  Designated  Assets,  as
required by applicable  law or as otherwise  requested  from time to time by the
Trustees of the Trust or the Adviser, and such additional information,  reports,
evaluations,  analyses and opinions as the Trustees of the Trust or the Adviser,
as appropriate, may request from time to time.

         5. Brokerage. In connection with the selections of brokers,  dealers or
other  entities and the placing of orders for the purchase and sale of portfolio
investments for the Fund with respect to the Designated  Assets, the Sub-Adviser
is  directed  to seek for the Fund  execution  at the  most  favorable  price by
responsible  brokerage  firms at reasonably  competitive  commission  rates.  In
fulfilling this  requirement,  the Sub-Adviser shall not be deemed to have acted
unlawfully or to have breached any duty, created by this Agreement or otherwise,
solely by reason of its having caused the Fund to pay a broker,  dealer or other
entity an amount of commission for effecting a securities  transaction in excess
of the amount of commission  another  broker,  dealer or other entity would have
charged for effecting that  transaction,  if the Sub-Adviser  determined in good
faith that such amount of commission  was reasonable in relation to the value of
the brokerage and research  services (within the meaning of Section 28(e) of the
Securities Exchange Act of 1934, as amended) provided by such broker,  dealer or
other  entity,  viewed in terms of either  that  particular  transaction  or the
Sub-Adviser's  overall  responsibilities  with  respect to the Fund and to other
clients of the  Sub-Adviser  as to which the  Sub-Adviser  exercises  investment
discretion.

         6.  Services to Other  Companies  or Accounts.  On  occasions  when the
Sub-Adviser  deems the purchase or sale of a security to be in the best interest
of the Fund as well as other clients,  the Sub-Adviser,  to the extent permitted
by applicable  laws and  regulations,  may, but shall be under no obligation to,
aggregate the  securities to be so purchased or sold in order to obtain the most
favorable price or lower brokerage commissions and efficient execution.  In such
event,  allocation  of the  securities  so  purchased  or  sold,  as well as the
expenses  incurred in the  transaction  will be made by the  Sub-Adviser  in the
manner it considers to be the most equitable. The Sub-Adviser agrees to allocate
similarly  opportunities  to sell or otherwise  dispose of securities  among the
Fund and other clients of the Sub-Adviser.

         7. Other Sub-Advisers. The Sub-Adviser may from time to time enter into
investment  sub-advisory  agreements with one or more investment  advisers,  (an
"Other  Sub-Adviser"),  to the Fund to perform  some or all of the  services for
which the Sub-Adviser is responsible  pursuant to this Agreement upon such terms
and  conditions  as the Adviser and the  Sub-Adviser  may  determine;  provided,
however,  that such investment  sub-advisory  agreements have been approved by a
majority  of the  Trustees  of the Trust who are not  interested  persons of the
Trust, or the Sub-Adviser or the Other  Sub-Adviser and by vote of a majority of
the outstanding voting securities of the Fund; and, provided,  further, that the
Sub-Adviser  shall  own a  majority  of  the  voting  securities  of  any  Other
Sub-Adviser. The Sub-Adviser may terminate the services of any Other Sub-Adviser
at any  time  in its  sole  discretion,  and  shall  at  such  time  assume  the
responsibilities  of such Other  Sub-Adviser  unless and until a successor Other
Sub-Adviser  is  selected.  The  Sub-Adviser  shall be  liable  for any error of
judgment or mistake of law by any

                                        -3-
<PAGE>

Other Sub-Adviser and for any act or omission in the execution and management of
the Fund by any Other Sub-Adviser.

         8. Compensation of the Sub-Adviser.  For the services to be rendered by
the Sub-Adviser  under this Agreement,  the Adviser shall pay to the Sub-Adviser
compensation, computed and paid monthly in arrears in U.S. dollars, at a rate of
0.65% of the  average  daily  net  asset  value of the  Designated  Assets on an
annualized  basis. If the Sub-Adviser shall serve for less than the whole of any
month, the compensation payable to the Sub-Adviser with respect to the Fund will
be prorated.  The Sub-Adviser  will pay its expenses  incurred in performing its
duties under this  Agreement.  Neither the Trust nor the Fund shall be liable to
the Sub-Adviser  for the  compensation  of the  Sub-Adviser.  For the purpose of
determining fees payable to the Sub-Adviser,  the value of the Fund's net assets
shall be computed  at the times and in the manner  specified  in the  Prospectus
and/or  Statement.  In the event that the  Adviser  reduces its  management  fee
payable  under  the  Advisory  Agreement  in order to  comply  with the  expense
limitations of a State  securities  commission or otherwise (but not a voluntary
reduction),  the  Sub-Adviser  agrees  to  reduce  its fee  payable  under  this
Agreement by a pro rata amount.

         9. Limitation of Liability of the  Sub-Adviser.  The Sub-Adviser  shall
not 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 duties and  obligations  hereunder.  The
Trust,  on behalf of the Fund, may enforce any  obligations  of the  Sub-Adviser
under this  Agreement  and may recover  directly  from the  Sub-Adviser  for any
liability it may have to the Fund.

         10.  Activities of the Sub-Adviser.  The services of the Sub-Adviser to
the Fund are not deemed to be exclusive,  the  Sub-Adviser  being free to render
investment  advisory and/or other services to others. The Sub-Adviser may permit
other fund clients to use the words  "Foreign & Colonial"  in their  names.  The
Adviser  and the Trust  agree  that if the  Sub-Adviser  shall for any reason no
longer serve as the Sub-Adviser to the Fund, the Fund will change its name so as
to delete the words  "Foreign & Colonial".  It is understood  that the Trustees,
officers and shareholders of the Trust, the Fund or the Adviser are or may be or
become interested in the Sub-Adviser or any person controlling, controlled by or
under common control with the Sub-Adviser, as trustees,  officers,  employees or
otherwise and that  trustees,  officers and employees of the  Sub-Adviser or any
person  controlling,  controlled by or under common control with the Sub-Adviser
may become  similarly  interested in the Trust, the Fund or the Adviser and that
the  Sub-Adviser  may be or become  interested in the Fund as a  shareholder  or
otherwise.

         11.  Covenants of the Sub-Adviser.  The Sub-Adviser  agrees that it (a)
will not deal with itself, "affiliated persons" of the Sub-Adviser, the Trustees
of the Trust or the Fund's  distributor  (provided that the Adviser provides the
Sub-Adviser with a current list, as updated from time to time as appropriate, of
"affiliated   persons"  of  the   Trustees  of  the  Trust  and  of  the  Fund's
distributor),  as principals,  agents, brokers or dealers in making purchases or
sales of  securities  or other  property for the account of the Fund,  except as
permitted by the 1940 Act and the rules,  regulations and orders  thereunder and
subject to the prior written  approval of the Adviser,  (b) 

                                        -4-
<PAGE>

will not take a long or short  position  in the  shares  of the Fund  except  as
permitted by the  Declaration  and (c) will comply with all other  provisions of
the  Declaration and the By-Laws and the  then-current  Prospectus and Statement
relative  to  the  Sub-Adviser  and  its  trustees,   officers,   employees  and
affiliates.

         12.  Representations,  Warranties  and  Additional  Agreements  of  the
Sub-Adviser. The Sub-Adviser represents, warrants and agrees that:

               (a)  It: (i) is  registered  as an  investment  adviser under the
                    U.S.  Investment  Advisers Act of 1940 (the "Advisers Act"),
                    is authorized to undertake investment business in the United
                    Kingdom  by  virtue  of its  membership  in  the  Investment
                    Management   Regulatory   Organization   ("IMRO")   and   is
                    registered  under the laws of any  jurisdiction in which the
                    Sub-Adviser  is required to be  registered  as an investment
                    adviser  in order to  perform  its  obligations  under  this
                    Agreement, and will continue to be so registered for so long
                    as this Agreement remains in effect;  (ii) is not prohibited
                    by the 1940 Act or the  Advisers  Act  from  performing  the
                    services contemplated by this Agreement;  (iii) has met, and
                    will continue to meet for so long as this Agreement  remains
                    in   effect,   any  other   applicable   Federal   or  State
                    requirements,   or  the  applicable   requirements   of  any
                    regulatory or industry  self-regulatory agency, necessary to
                    be met in order to perform the services contemplated by this
                    Agreement;  (iv) has the authority to enter into and perform
                    the  services  contemplated  by  this  Agreement;  (v)  will
                    immediately  notify the Adviser in writing of the occurrence
                    of any event  that would  disqualify  the  Sub-Adviser  from
                    serving as an investment  adviser of an  investment  company
                    pursuant to Section 9(a) of the 1940 Act or  otherwise;  and
                    (vi) will  immediately  notify the Adviser in writing of any
                    change of  control of the  Sub-Adviser  or any parent of the
                    Sub-Adviser resulting in an "assignment" of this Agreement.

               (b)  It will maintain, keep current and preserve on behalf of the
                    Fund,  in the manner and for the periods of time required or
                    permitted  by the 1940 Act and the  rules,  regulations  and
                    orders  thereunder  and the  Advisers  Act  and  the  rules,
                    regulations  and  orders  thereunder,  records  relating  to
                    investment transactions made by the Sub-Adviser for the Fund
                    as may be  reasonably  requested  by the Adviser or the Fund
                    from time to time. The Sub-Adviser  agrees that such records
                    are the property of the Fund, and will be surrendered to the
                    Fund  promptly  upon request;  provided,  however,  that the
                    Sub-Adviser  may retain  copies of such records for archival
                    purposes as required by IMRO.

               (c)  The  Sub-Adviser  has  adopted  a  written  code  of  ethics
                    complying with the requirements of Rule 17j-1 under the 1940
                    Act and,  if it has not already  done so,  will  provide the
                    Adviser  and the Trust  with a copy of such code of  ethics,
                    and upon any  amendment  to such  code of  ethics,  promptly
                    provide such  amendment.  At least annually the  Sub-Adviser
                    will  provide the Trust and the Adviser  with a  certificate
                    signed  by the  chief  compliance  officer  (or  the  person
                    performing such function) of the Sub-Adviser certifying,  to
                    the best of his or her knowledge,  compliance  with 

                                        -5-
<PAGE>

                    the  code of ethics during the immediately  preceding  
                    twelve (12) month period, including any material violations 
                    of or amendments to the code of ethics or the administration
                    thereof.

               (d)  It has provided the Adviser and the Trust with a copy of its
                    Form ADV as most  recently  filed  with the  Securities  and
                    Exchange  Commission  (the "SEC") and will,  promptly  after
                    filing any amendment to its Form ADV with the SEC, furnish a
                    copy of such amendment to the Adviser and the Trust.

         13.  Representations,  Warranties  and  Additional  Agreements  of  the
Adviser. The Adviser represents, warrants and agrees that:

               (a)  This  Agreement  has  been  duly  authorized,  executed  and
                    delivered  by it  and  constitutes  the  valid  and  binding
                    obligation  of  the  Adviser   enforceable   against  it  in
                    accordance with its terms.

               (b)  No governmental authorization, approvals, consents or filing
                    by or with United States regulatory authorities are required
                    in connection with the execution, delivery or performance of
                    this Agreement by the Adviser.

               (c)  The execution, delivery and performance of this Agreement by
                    the Adviser will not violate or result in any default  under
                    its Articles of Incorporation or the Trust's  Declaration of
                    Trust or other  constituent  documents,  or any  contract or
                    other  agreement to which either of them is a party or which
                    either of them or their  assets may be bound or any statute,
                    or any rule,  regulations or order of any government agency,
                    body or authority to which either of them is subject.

               (d)  At all times the  Sub-Adviser  shall deal with, and shall be
                    entitled to deal with,  the  Designated  Assets on the basis
                    that the Fund has full  title to or is in  control of all of
                    the Designated Assets free from all liens, charges, options,
                    encumbrances   or  other  third  party  rights,   except  as
                    disclosed to the  Sub-Adviser by the Fund or the Adviser and
                    except for any such encumbrances incurred as a result of the
                    performance  by the  Sub-Adviser  of its  duties  under this
                    Agreement.

               (e)  It has and will  maintain  the  authority  and  capacity  to
                    authorize  the  Sub-Adviser  to enter into the  documents on
                    behalf of the Fund contemplated by Section 3 hereof.

         14. Duration and  Termination of this  Agreement.  This Agreement shall
become  effective on the date first above written and shall govern the relations
between the parties hereto thereafter, and shall remain in force until August 1,
1999  and  each  year  thereafter  but  only  so  long  as  its  continuance  is
"specifically  approved at least  annually" (a) by the vote of a majority of the
Trustees  of the Trust who are not  "interested  persons" of the Trust or of the
Adviser or of the Sub-Adviser at a meeting  specifically  called for the purpose
of voting on such approval, and (b) by the Board of Trustees of the Trust, or by
"vote of a majority of the  outstanding  voting  securities"  of the Fund.  This
Agreement  may be  terminated  at any time without the payment of 

                                        -6-
<PAGE>

any  penalty  by the  Trustees  of the  Trust,  by  "vote of a  majority  of the
outstanding voting  securities" of the Fund or by the Adviser,  on not more than
sixty days nor less than thirty days written  notice,  or by the  Sub-Adviser on
not more  than  ninety  days nor less  than  sixty  days  written  notice.  This
Agreement shall  automatically  terminate in the event of its "assignment" or in
the event that the Advisory Agreement shall have terminated for any reason.

         15. Amendments to this Agreement. This Agreement may be amended only if
such  amendment  is approved by "vote of a majority  of the  outstanding  voting
securities" of the Fund, by the Adviser and by the Sub-Adviser.

         16.  Certain  Definitions.  The terms  "specifically  approved at least
annually",   "vote  of  a  majority  of  the  outstanding  voting   securities",
"assignment", "control", "affiliated persons" and "interested person", when used
in this Agreement,  shall have the respective meanings  specified,  and shall be
construed in a manner  consistent with, the 1940 Act and the rules,  regulations
and orders thereunder, subject, however, to such exemptions as may be granted by
the SEC under the 1940 Act.

         17.  Survival  of  Representations  and  Warranties;   Duty  to  Update
Information. All representations and warranties made pursuant to Sections 12 and
13 hereof shall survive for the duration of this  Agreement and each party shall
immediately notify, but in no event later than five (5) business days, the other
in writing upon  becoming  aware that any of the foregoing  representations  and
warranties are no longer true.

         18. Miscellaneous. This Agreement shall be governed by and construed in
accordance  with the internal laws of The  Commonwealth  of  Massachusetts.  All
notices  provided for by this Agreement  shall be in writing and shall be deemed
given when received, against appropriate receipt, by the Sub-Adviser's Secretary
in the case of the Sub-Adviser, the Adviser's General Counsel in the case of the
Adviser, and the Trust's Secretary in the case of the Fund, or such other person
as a party  shall  designate  by  notice to the other  parties.  This  Agreement
constitutes  the entire  agreement  among the parties  hereto and supersedes any
prior  agreement  among the parties  relating to the subject matter hereof.  The
section  headings of this Agreement are for  convenience of reference and do not
constitute a part hereof.

                                        -7-

<PAGE>

                IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and  delivered  in their names and on their behalf by the  undersigned,
thereunto duly authorized,  and their respective seals to be hereto affixed, all
as of the day and year first written above.

                                        MASSACHUSETTS FINANCIAL SERVICES COMPANY


                                        By:     JEFFREY L. SHAMES
                                                Jeffrey L. Shames
                                                President

                                        FOREIGN & COLONIAL MANAGEMENT LTD.


                                        By:     ILLEGIBLE
                                                (Illegible)

                                        By:     ILLEGIBLE
                                                (Illegible)
The foregoing is hereby agreed to:

         A copy of the  Declaration  of Trust of the  Trust is on file  with the
Secretary of State of The  Commonwealth  of  Massachusetts.  The parties  hereto
acknowledge  that the  obligations of or arising out of this  instrument are not
binding  upon  any of the  Trust's  trustees,  officers,  employees,  agents  or
shareholders  individually,  but are binding solely upon the assets and property
of the Trust in accordance with its proportionate  interest  hereunder.  If this
instrument  is  executed  by the Trust on  behalf  of one or more  series of the
Trust,  the parties hereto  acknowledge  that the assets and liabilities of each
series of the Trust are separate and  distinct  and that the  obligations  of or
arising out of this instrument are binding solely upon the assets or property of
the series on whose behalf the Trust has executed this instrument.  If the Trust
has executed this instrument on behalf of more than one series of the Trust, the
parties hereto also agree that the obligations of each series hereunder shall be
several and not joint, in accordance with its proportionate  interest hereunder,
and  the  parties  hereto  agree  not to  proceed  against  any  series  for the
obligations of another series.

MFS VARIABLE INSURANCE TRUST
  on behalf of MFS/FOREIGN & COLONIAL EMERGING MARKETS EQUITY SERIES


By:   A. KEITH BRODKIN
      A. Keith Brodkin
      Chairman

                                        - 8 -

<PAGE>
                                                            EXHIBIT NO. 99.5(c)

                             SUB-ADVISORY AGREEMENT


         SUB-ADVISORY  AGREEMENT,  dated this 16th day of October,  1997, by and
between FOREIGN & COLONIAL  MANAGEMENT  LTD., a company  incorporated  under the
laws of England and Wales (the  "Sub-Adviser"),  and FOREIGN & COLONIAL EMERGING
MARKETS  LIMITED,  a company  incorporated  under the laws of England  and Wales
("FCEM").

                                  WITNESSETH:

         WHEREAS,  Massachusetts  Financial  Services  Company  (the  "Adviser")
provides  MFS/Foreign & Colonial Emerging Markets Equity Series (the "Fund"),  a
series of MFS Variable  Insurance  Trust (the "Trust"),  an open-end  investment
company  registered  under the  Investment  Company Act of 1940, as amended (the
"1940  Act"),  business  services  pursuant  to the terms and  conditions  of an
investment advisory agreement dated October 16, 1997 (the "Advisory  Agreement")
between the Adviser and the Trust, on behalf of the Fund;

         WHEREAS,  the Sub-Adviser  provides services to the Adviser pursuant to
the terms and conditions of a sub-advisory agreement dated October 16, 1997 (the
"FCM Sub-Advisory Agreement") between the Adviser and the Sub-Adviser; and

         WHEREAS,  FCEM is willing to provide services to the Sub-Adviser on the
terms and conditions hereinafter set forth.

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
of the parties  hereto as herein set forth,  the parties  covenant  and agree as
follows:

         1. Duties of FCEM.  Subject to the  supervision  of the Trustees of the
Trust,  the Adviser and the  Sub-Adviser,  FCEM will: (a) manage such portion of
the Fund's assets as the Adviser,  Sub-Adviser  and FCEM shall from time to time
mutually  designate  (the  "Designated  Assets")  on  behalf  of the Fund (i) in
accordance  with the Fund's  investment  objective,  policies and limitations as
stated in the Fund's then current Prospectus (the "Prospectus") and Statement of
Additional  Information (the "Statement"),  and the Trust's Amended and Restated
Declaration  of Trust dated  January 24, 1996 and Amended and Restated  By-Laws,
each as from time to time in effect  (respectively,  the  "Declaration"  and the
"By-Laws")  (the  obligations of FCEM under this clause (i) are contingent  upon
the  Sub-Adviser  fulfilling  its  obligations  under  Section  2) and  (ii)  in
compliance with the 1940 Act and the rules,  regulations and orders  thereunder;
(b) make  investment  decisions  for the Fund  with  respect  to the  Designated
Assets;  (c) place purchase and sale orders for portfolio  transactions  for the
Fund with respect to the Designated  Assets;  (d) except to the extent performed
by the Adviser, manage otherwise uninvested cash assets of the Fund with respect
to the  Designated  Assets;  (e) as the  agent of the  Fund,  give  instructions
(including trade tickets) to the custodian and any  sub-custodian of the Fund as
to deliveries of

                                        -1-
<PAGE>

securities,  transfers of currencies and payments of cash for the account of the
Fund with  respect to the  Designated  Assets  (FCEM shall  promptly  notify the
Adviser  and the  Sub-Adviser  of such  instructions);  (f) employ  professional
portfolio managers to provide research services to the Fund; (g) attend periodic
meetings of the Board of Trustees of the Trust and (h) assist in  obtaining  all
the registrations, qualifications and consents, on behalf of the Fund, which are
necessary for the Fund to purchase and sell assets in each  jurisdiction  (other
than the United  States) in which the Designated  Assets are to be invested.  In
providing these services,  FCEM will furnish  continuously an investment program
with respect to the Designated Assets.  FCEM shall be responsible for monitoring
the Fund's compliance with the Prospectus,  the Statement, the Declaration,  the
By-Laws and the 1940 Act and the rules, regulations and orders thereunder and in
monitoring such  compliance  FCEM shall do so in the functional  currency of the
Fund.  FCEM shall only be responsible  for compliance  with the  above-mentioned
restrictions  in regards to the Designated  Assets.  The  Sub-Adviser  agrees to
provide  FCEM with such  assistance  as may be  reasonably  requested by FCEM in
connection  with  its  activities  under  this  Agreement,   including,  without
limitation,  information concerning the Fund, its funds available,  or to become
available,  for  investment  and  generally as to the  conditions  of the Fund's
affairs.  From time to time the  Sub-Adviser  will notify FCEM of the  aggregate
U.S.   Dollar  amount  of  the   Designated   Assets.   The  Adviser  will  have
responsibility for exercising proxy,  consent and other rights pertaining to the
Fund's portfolio  securities;  provided,  however, that FCEM will, as requested,
make  recommendations  to the  Sub-Adviser as to the manner in which such proxy,
consent and other rights shall be exercised.

         Should the Trustees of the Trust or the Adviser and the  Sub-Adviser at
any time make any  determination as to investment policy and notify FCEM thereof
in writing,  FCEM shall be bound by such  determination  for the period, if any,
specified  in such notice or until  notified  that such  determination  has been
revoked.  Further,  the Adviser and the Sub-Adviser or the Trustees of the Trust
may at any time,  upon written notice to FCEM,  suspend or restrict the right of
FCEM to  determine  what assets of the Fund shall be  purchased or sold and what
portion, if any, of the Fund's assets shall be held uninvested. It is understood
that the Adviser and the  Sub-Adviser  undertake  to discuss  with FCEM any such
determinations  of investment policy and any such suspensions or restrictions on
the right of FCEM to  determine  what assets of the Fund shall be  purchased  or
sold or held uninvested, prior to the implementation thereof.

         Any duties of FCEM under this Section 1 may be  delegated, in whole or 
in part, by FCEM to the Sub-Adviser.

         2.  Certain  Information  to  FCEM.  Copies  of  the  Prospectus,   the
Statement,  the  Declaration  and the By-Laws have been  delivered to FCEM.  The
Sub-Adviser  agrees to notify FCEM of each change in the investment  objectives,
policies  and  limitations  of the Fund and to  provide to FCEM as  promptly  as
practicable  copies of all amendments and  supplements  to the  Prospectus,  the
Statement,  the Declaration and the By-Laws.  In addition,  the Sub-Adviser will
promptly  provide FCEM with any procedures  applicable to FCEM adopted from time
to time by the  Trustees  of the Trust and  agrees to provide  promptly  to FCEM
copies of all amendments thereto.

                                        -2-
<PAGE>

         3.  Execution  of  Certain  Documents.  Subject  to any  other  written
instructions of the Adviser, the Sub-Adviser and the Trustees of the Trust, FCEM
is hereby appointed the Sub-Adviser's and the Trust's agent and attorney-in-fact
to execute account documentation,  agreements,  contracts and other documents as
FCEM shall be requested by brokers, dealers, counterparties and other persons in
connection with its management of the Designated Assets.

         4. Brokerage. In connection with the selections of brokers,  dealers or
other  entities and the placing of orders for the purchase and sale of portfolio
investments for the Fund with respect to the Designated Assets, FCEM is directed
to seek  for the  Fund  execution  at the most  favorable  price by  responsible
brokerage firms at reasonably  competitive  commission rates. In fulfilling this
requirement,  FCEM  shall  not be  deemed to have  acted  unlawfully  or to have
breached any duty,  created by this Agreement or otherwise,  solely by reason of
its having caused the Fund to pay a broker,  dealer or other entity an amount of
commission  for  effecting a securities  transaction  in excess of the amount of
commission  another  broker,  dealer or other  entity  would  have  charged  for
effecting that transaction, if FCEM determined in good faith that such amount of
commission was reasonable in relation to the value of the brokerage and research
services (within the meaning of Section 28(e) of the Securities  Exchange Act of
1934, as amended)  provided by such broker,  dealer or other  entity,  viewed in
terms of either that particular  transaction or FCEM's overall  responsibilities
with respect to the Fund and to other clients of FCEM as to which FCEM exercises
investment discretion.

         5.  Reports.  FCEM shall  furnish  to the  Trustees  of the Trust,  the
Adviser or the  Sub-Adviser,  or all of them, as may be  appropriate,  quarterly
reports of its  activities on behalf of the Fund, as required by applicable  law
or as otherwise  requested  from time to time by the Trustees of the Trust,  the
Adviser  or  the  Sub-Adviser,   and  such  additional   information,   reports,
evaluations,  analyses and opinions as the Trustees of the Trust, the Adviser or
the Sub-Adviser, as appropriate, may request from time to time.

         6.  Services to Other  Companies  or Accounts.  On occasions  when FCEM
deems the purchase or sale of a security to be in the best  interest of the Fund
as well as other clients,  FCEM, to the extent  permitted by applicable laws and
regulations,  may, but shall be under no obligation to, aggregate the securities
to be so purchased or sold in order to obtain the most favorable  price or lower
brokerage commissions and efficient execution.  In such event, allocation of the
securities  so  purchased  or  sold,  as well as the  expenses  incurred  in the
transaction  will be made by FCEM in the  manner  it  considers  to be the  most
equitable.  FCEM agrees to allocate similarly opportunities to sell or otherwise
dispose of securities among the Fund and other clients of FCEM.

         7.  Compensation of FCEM. For the services to be rendered by FCEM under
this Agreement,  the Sub-Adviser  shall pay to FCEM  compensation,  computed and
paid  monthly in  arrears,  at a rate of 0.650% of the  average  daily net asset
value of the Designated  Assets on an annualized  basis. If FCEM shall serve for
less than the whole of any month, the compensation  payable to FCEM with respect
to the Fund will be prorated.  FCEM will pay its expenses incurred in performing
its duties  under this  Agreement.  Neither the Trust,  the Adviser nor the Fund
shall  be  liable  to FCEM for the  compensation  of FCEM.  For the  purpose  of
determining  

                                        -3-
<PAGE>

fees  payable to FCEM,  the value of the Fund's net assets  shall be computed at
the times and in the manner specified in the Prospectus and/or Statement. In the
event that the  Sub-Adviser  reduces its  management  fee payable  under the FCM
Sub-Advisory  Agreement  in order to comply  with the expense  limitations  of a
State securities commission or otherwise (but not a voluntary  reduction),  FCEM
agrees to reduce its fee payable under this Agreement by a pro rata amount.

         8.  Limitation  of Liability of FCEM.  FCEM shall not 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 duties and obligations hereunder. The Trust, on behalf of the
Fund,  may enforce any  obligations of FCEM under this Agreement and may recover
directly from FCEM for any liability it may have to the Fund.

         9.  Activities of FCEM. The services of FCEM to the Fund are not deemed
to be  exclusive,  FCEM being free to render  investment  advisory  and/or other
services  to  others.   It  is  understood  that  the  Trustees,   officers  and
shareholders  of the Trust,  the Fund, the Adviser or the Sub-Adviser are or may
become  interested  in FCEM or any person  controlling,  controlled  by or under
common control with FCEM, as trustees, officers, employees or otherwise and that
trustees,  officers and employees of FCEM or any person controlling,  controlled
by or under common  control  with FCEM may become  similarly  interested  in the
Trust,  the Fund, the Adviser or the  Sub-Adviser and that FCEM may be or become
interested in the Fund as a shareholder or otherwise.


         10.  Covenants  of FCEM.  FCEM  agrees  that it (a) will not deal  with
itself, "affiliated persons" of FCEM, the Sub-Adviser, the Trustees of the Trust
or the Fund's  distributor  (provided that the Adviser  provides the Sub-Adviser
with a current list, as updated from time to time as appropriate, of "affiliated
persons"  of the  Trustees  of the  Trust  and of the  Fund's  distributor),  as
principals,  agents,  brokers  or  dealers  in  making  purchases  or  sales  of
securities or other property for the account of the Fund, except as permitted by
the 1940 Act and the rules, regulations and orders thereunder and subject to the
prior  written  approval  of the  Adviser,  (b)  will  not  take a long or short
position in the shares of the Fund except as  permitted by the  Declaration  and
(c) will comply with all other provisions of the Declaration and the By-Laws and
the  then-current  Prospectus  and Statement  relative to FCEM and its trustees,
officers, employees and affiliates.

         11. Representations, Warranties and Additional Agreements of FCEM. FCEM
represents, warrants and agrees that:

               (a)  It: (i) is  registered  as an  investment  adviser under the
                    U.S.  Investment  Advisers Act of 1940 (the "Advisers Act"),
                    is authorized to undertake investment business in the United
                    Kingdom  by  virtue  of its  membership  in  the  Investment
                    Management   Regulatory   Organization   ("IMRO")   and   is
                    registered  under the laws of any jurisdiction in which FCEM
                    is required to be  registered  as an  investment  adviser in
                    order to perform its obligations  under this Agreement,  and
                    will  continue  to be so  registered  for so  long  as  this
                    Agreement  remains in effect;  (ii) is not prohibited by the
                    1940 Act or the  Advisers Act from  performing  the services
                    contemplated  by this  

                                        -4-
<PAGE>
     
                    Agreement;  (iii) has met, and will  continue to meet for so
                    long as this  Agreement  remains in  effect,  any other
                    applicable  Federal  or  State  requirements,   or  the
                    applicable  requirements  of any regulatory or industry
                    self-regulatory agency, necessary to be met in order to
                    perform the services  contemplated  by this  Agreement;
                    (iv) has the  authority  to enter into and  perform the
                    services  contemplated  by  this  Agreement;  (v)  will
                    immediately  notify the Adviser and the  Sub-Adviser in
                    writing  of the  occurrence  of any  event  that  would
                    disqualify  FCEM from serving as an investment  adviser
                    of an  investment  company  pursuant to Section 9(a) of
                    the 1940 Act or  otherwise;  and (vi) will  immediately
                    notify the  Adviser and the  Sub-Adviser  in writing of
                    any  change of  control  of FCEM or any  parent of FCEM
                    resulting in an "assignment" of this Agreement.


               (b)  It will maintain, keep current and preserve on behalf of the
                    Fund,  in the manner and for the periods of time required or
                    permitted  by the 1940 Act and the  rules,  regulations  and
                    orders  thereunder  and the  Advisers  Act  and  the  rules,
                    regulations  and  orders  thereunder,  records  relating  to
                    investment  transactions made by FCEM for the Fund as may be
                    reasonably requested by the Adviser or the Fund from time to
                    time.  FCEM agrees that such records are the property of the
                    Fund,  and will be  surrendered  to the Fund  promptly  upon
                    request;  provided,  however, that FCEM may retain copies of
                    such records for archival purposes as required by IMRO.


               (c)  FCEM has adopted a written code of ethics complying with the
                    requirements of Rule 17j-1 under the 1940 Act and, if it has
                    not  already  done  so,  will   provide  the  Adviser,   the
                    Sub-Adviser  and  the  Trust  with a copy  of  such  code of
                    ethics,  and  upon any  amendment  to such  code of  ethics,
                    promptly provide such amendment. At least annually FCEM will
                    provide the Trust,  the  Sub-Adviser  and the Adviser with a
                    certificate  signed by the chief compliance  officer (or the
                    person performing such function) of FCEM certifying,  to the
                    best of his or her  knowledge,  compliance  with the code of
                    ethics during the  immediately  preceding  twelve (12) month
                    period,  including any material  violations of or amendments
                    to the code of ethics or the administration thereof.

               (d)  It has provided the Adviser,  the  Sub-Adviser and the Trust
                    with a copy of its Form ADV as most recently  filed with the
                    Securities  and  Exchange  Commission  (the "SEC") and will,
                    promptly after filing any amendment to its Form ADV with the
                    SEC,  furnish a copy of such  amendment to the Adviser,  the
                    Sub-Adviser and the Trust.

         12. Duration and  Termination of this  Agreement.  This Agreement shall
become  effective on the date first above written and shall govern the relations
between the parties hereto thereafter, and shall remain in force until August 1,
1999  and  each  year  thereafter  but  only  so  long  as  its  continuance  is
"specifically  approved at least  annually" (a) by the vote of a majority of the
Trustees  of the  Trust  who are not  "interested  persons"  of the  Trust,  the
Adviser,  the  Sub-Adviser  or FCEM at a  meeting  specifically  called  for the
purpose  of voting on such  approval,  and (b) by the Board of  Trustees  of the
Trust,  or by "vote of a majority of the outstanding  voting  

                                        -6-
<PAGE>

securities"  of the Fund.  This  Agreement may be terminated at any time without
the payment of any penalty by the Trustees of the Trust,  by "vote of a majority
of the  outstanding  voting  securities"  of the Fund or by the  Adviser  or the
Sub-Adviser,  on not more than  sixty  days nor less than  thirty  days  written
notice, or by FCEM on not more than ninety days nor less than sixty days written
notice.  This  Agreement  shall  automatically  terminate  in the  event  of its
"assignment" or in the event that the FCM Sub-Advisory Agreement or the Advisory
Agreement shall have terminated for any reason.

         13. Amendments to this Agreement. This Agreement may be amended only if
such  amendment  is approved by "vote of a majority  of the  outstanding  voting
securities" of the Fund, by the Adviser, by the Sub-Adviser and by FCEM.

         14.  Certain  Definitions.  The terms  "specifically  approved at least
annually",   "vote  of  a  majority  of  the  outstanding  voting   securities",
"assignment",  "control", "affiliated person" and "interested person", when used
in this Agreement,  shall have the respective meanings  specified,  and shall be
construed in a manner  consistent with, the 1940 Act and the rules,  regulations
and orders thereunder, subject, however, to such exemptions as may be granted by
the SEC under the 1940 Act.

         15.  Survival  of  Representations  and  Warranties;   Duty  to  Update
Information. All representations and warranties made by FCEM pursuant to Section
10 hereof  shall  survive  for the  duration  of this  Agreement  and FCEM shall
immediately  notify,  but in no event  later than five (5)  business  days,  the
Adviser  and the  Sub-Adviser  in writing  upon  becoming  aware that any of the
foregoing representations and warranties are no longer true.

         16. Miscellaneous. This Agreement shall be governed by and construed in
accordance  with the internal laws of The  Commonwealth  of  Massachusetts.  All
notices  provided for by this Agreement  shall be in writing and shall be deemed
given when received, against appropriate receipt, by the Sub-Adviser's Secretary
in the case of the Sub-Adviser,  by the Adviser's General Counsel in the case of
the  Adviser,  by  FCEM's  Secretary  in the  case  of FCEM  and by the  Trust's
Secretary  in the  case of the  Fund,  or such  other  person  as a party  shall
designate by notice to the other parties.  This Agreement constitutes the entire
agreement  among the parties hereto and supersedes any prior agreement among the
parties  relating to the subject  matter  hereof.  The section  headings of this
Agreement are for convenience of reference and do not constitute a part hereof.


<PAGE>
                IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and  delivered  in their names and on their behalf by the  undersigned,
thereunto duly authorized,  and their respective seals to be hereto affixed, all
as of the day and year first written above.

                                        FOREIGN & COLONIAL MANAGEMENT LTD.

                                        By:      ILLEGIBLE
                                                 (Illegible)

                                        By:      ILLEGIBLE
                                                 (Illegible)

                                        FOREIGN & COLONIAL EMERGING
                                         MARKETS LIMITED

                                        By:      ILLEGIBLE
                                                (Illegible)

                                        By:      ILLEGIBLE
                                                (Illegible)

The foregoing is hereby agreed to:

         A copy of the  Declaration  of Trust of the  Trust is on file  with the
Secretary of State of The  Commonwealth  of  Massachusetts.  The parties  hereto
acknowledge  that the  obligations of or arising out of this  instrument are not
binding  upon  any of the  Trust's  trustees,  officers,  employees,  agents  or
shareholders  individually,  but are binding solely upon the assets and property
of the Trust in accordance with its proportionate  interest  hereunder.  If this
instrument  is  executed  by the Trust on  behalf  of one or more  series of the
Trust,  the parties hereto  acknowledge  that the assets and liabilities of each
series of the Trust are separate and  distinct  and that the  obligations  of or
arising out of this instrument are binding solely upon the assets or property of
the series on whose behalf the Trust has executed this instrument.  If the Trust
has executed this instrument on behalf of more than one series of the Trust, the
parties hereto also agree that the obligations of each series hereunder shall be
several and not joint, in accordance with its proportionate  interest hereunder,
and  the  parties  hereto  agree  not to  proceed  against  any  series  for the
obligations of another series.

MFS VARIABLE INSURANCE TRUST
on behalf of MFS/FOREIGN & COLONIAL EMERGING MARKETS EQUITY SERIES

By:    A. KEITH BRODKIN
       A. Keith Brodkin
       Chairman
<PAGE>

MASSACHUSETTS FINANCIAL
   SERVICES COMPANY

By:    JEFFREY L. SHAMES
       Jeffrey L. Shames
       President

                                        -8-

<PAGE>
                                                          EXHIBIT NO. 99.5(d)

                  FORM OF INVESTMENT ADVISORY AGREEMENT




         INVESTMENT ADVISORY  AGREEMENT,  dated this 29th day of April, 1998, by
and between MFS VARIABLE  INSURANCE  TRUST, a Massachusetts  business trust (the
"Trust"),  on behalf of MFS NEW  DISCOVERY  SERIES,  a series of the Trust  (the
"Fund"),  and MASSACHUSETTS  FINANCIAL SERVICES COMPANY, a Delaware  corporation
(the "Adviser").

                                                    WITNESSETH:

         WHEREAS,  the Trust is engaged in business  as an  open-end  investment
company registered under the Investment Company Act of 1940; and

         WHEREAS,  the  Adviser is willing to provide business services  to the
Fund on the terms and conditions hereinafter set forth;

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
of the parties  hereto as herein set forth,  the parties  covenant  and agree as
follows:

         Article 1. Duties of the Adviser.  The Adviser  shall  provide the Fund
with such investment  advice and supervision as the latter may from time to time
consider  necessary for the proper  supervision of its funds.  The Adviser shall
act as Adviser to the Fund and as such shall furnish  continuously an investment
program  and  shall  determine  from  time  to time  what  securities  shall  be
purchased, sold or exchanged and what portion of the assets of the Fund shall be
held  uninvested,  subject always to the restrictions of the Trust's Amended and
Restated  Declaration  of Trust,  dated January 24, 1996,  and By-Laws,  each as
amended from time to time  (respectively,  the "Declaration" and the "By-Laws"),
to  the  provisions  of the  Investment  Company  Act of  1940  and  the  Rules,
Regulations and orders thereunder and to the Fund's then-current  Prospectus and
Statement of Additional Information. The Adviser shall also make recommendations
as to the manner in which voting rights,  rights to consent to corporate  action
and any other rights  pertaining  to the Fund's  portfolio  securities  shall be
exercised.  Should  the  Trustees  at  any  time,  however,  make  any  definite
determination  as to the  investment  policy and notify the  Adviser  thereof in
writing,  the Adviser shall be bound by such  determination  for the period,  if
any,   specified  in  such  notice  or  until   similarly   notified  that  such
determination  shall be revoked.  The Adviser shall take, on behalf of the Fund,
all actions  which it deems  necessary  to  implement  the  investment  policies
determined  as provided  above,  and in  particular  to place all orders for the
purchase or sale of portfolio  securities for the Fund's account with brokers or
dealers  selected by it, and to that end, the Adviser is authorized as the agent
of the  Fund  to  give  instructions  to the  Custodian  of the  Fund  as to the
deliveries  of  securities  and payments of cash for the account of the Fund. In
connection with the selection of such brokers or dealers and the placing of such
orders,  the  Adviser is  directed  to seek for the Fund  execution  at the most

                                        -1-
<PAGE>

reasonable  price  by  responsible  brokerage  firms at  reasonably  competitive
commission  rates.  In  fulfilling  this  requirement,  the Adviser shall not be
deemed to have acted  unlawfully or to have  breached any duty,  created by this
Agreement or otherwise,  solely by reason of its having caused the Fund to pay a
broker or dealer an amount of commission for effecting a securities  transaction
in excess of the  amount  of  commission  another  broker or dealer  would  have
charged for effecting that transaction,  if the Adviser determined in good faith
that such amount of  commission  was  reasonable in relation to the value of the
brokerage  and research  services  provided by such broker or dealer,  viewed in
terms  of  either  that   particular   transaction  or  the  Adviser's   overall
responsibilities with respect to the Fund and to other clients of the Adviser as
to which the Adviser exercises investment discretion.

The Adviser may from time to time enter into sub-investment  advisory agreements
with one or more  investment  advisers  with such  terms and  conditions  as the
Adviser may determine,  provided that such  sub-investment  advisory  agreements
have been approved in accordance  with  applicable  provisions of the Investment
Company Act of 1940.  Subject to the  provisions of Article 6, the Adviser shall
not be liable for any error of judgment or mistake of law by any  sub-adviser or
for any loss arising out of any  investment  made by any  sub-adviser or for any
act or omission in the execution and management of the Fund by any sub-adviser.

         Article 2.  Allocation  of Charges  and  Expenses.  The  Adviser  shall
furnish at its own expense  investment  advisory  and  administrative  services,
office  space,  equipment  and clerical  personnel  necessary  for servicing the
investments of the Fund and maintaining its organization and investment advisory
facilities and executive and supervisory  personnel for managing the investments
and effecting the portfolio transactions of the Fund. The Adviser shall arrange,
if desired by the Trust, for Directors, officers and employees of the Adviser to
serve as Trustees,  officers or agents of the Trust if duly elected or appointed
to such positions and subject to their individual consent and to any limitations
imposed by law. It is understood  that the Fund will pay all of its own expenses
including,  without  limitation,  compensation of Trustees "not affiliated" with
the Adviser;  governmental fees; interest charges; taxes; membership dues in the
Investment  Company  Institute  allocable  to the  Fund;  fees and  expenses  of
independent auditors, of legal counsel, and of any transfer agent,  registrar or
dividend  disbursing  agent of the Fund;  expenses of repurchasing and redeeming
shares and servicing shareholder accounts;  expenses of preparing,  printing and
mailing stock certificates,  shareholder reports,  notices, proxy statements 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 the  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;  expenses of shareholders'  meetings;  and expenses
relating to the issuance,  registration and  qualification of shares of the Fund
and the  preparation,  printing and mailing of  prospectuses  for such  purposes
(except to the extent that any  Distribution  Agreement  to which the Trust is a
party provides that another party is to pay some or all of such expenses).

         Article 3. Compensation of the Adviser. For the services to be rendered
and the  facilities  provided,  the Fund shall pay to the Adviser an  investment
advisory  fee  computed  and paid  annually  at a rate equal ____% of the Fund's
average daily net assets.  If the Adviser shall 

                                        -2-
<PAGE>

serve for less than the whole of any  period  specified  in this  Article 3, the
compensation to the Adviser will be prorated.

         Article 4. Special Services.  Should the Trust have occasion to request
the  Adviser  to perform  services  not herein  contemplated  or to request  the
Adviser to arrange  for the  services of others,  the  Adviser  will act for the
Trust on  behalf  of the Fund  upon  request  to the best of its  ability,  with
compensation  for the Adviser's  services to be agreed upon with respect to each
such occasion as it arises.

         Article 5.  Covenants of the Adviser.  The Adviser  agrees that it will
not  deal  with  itself,  or with  the  Trustees  of the  Trust  or the  Trust's
distributor, if any, as principals in making purchases or sales of securities or
other  property  for  the  account  of the  Fund,  except  as  permitted  by the
Investment Company Act of 1940 and the Rules,  Regulations or orders thereunder,
will not take a long or short  position  in the  shares  of the Fund  except  as
permitted by the  Declaration,  and will comply with all other provisions of the
Declaration  and the By-Laws and the  then-current  Prospectus  and Statement of
Additional Information of the Fund relative to the Adviser and its Directors and
officers.

         Article 6.  Limitation  of Liability of the Adviser.  The Adviser shall
not 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 duties and obligations  hereunder.  As used
in this Article 6, the term  "Adviser"  shall  include  Directors,  officers and
employees of the Adviser as well as that corporation itself.

         Article 7.  Activities  of the Adviser.  The services of the Adviser to
the Fund are not  deemed  to be  exclusive,  the  Adviser  being  free to render
investment  advisory  and/or  other  services to others.  The Adviser may permit
other fund  clients to use the initials  "MFS" in their  names.  The Fund agrees
that if the Adviser  shall for any reason no longer  serve as the Adviser to the
Fund,  the Fund will change its name so as to delete the  initials  "MFS." It is
understood that the Trustees,  officers and shareholders of the Trust are or may
be or become interested in the Adviser, as Directors,  officers,  employees,  or
otherwise and that  Directors,  officers and employees of the Adviser are or may
become similarly  interested in the Trust, and that the Adviser may be or become
interested in the Fund as a shareholder or otherwise.

         Article 8. Duration,  Termination and Amendment of this Agreement. This
Agreement  shall  become  effective  on the date first  above  written and shall
govern the relations between the parties hereto thereafter,  and shall remain in
force  until  April  29,  2000  on  which  date  it will  terminate  unless  its
continuance  after April 29, 2000 is  "specifically  approved at least annually"
(i) by the  vote  of a  majority  of the  Trustees  of the  Trust  who  are  not
"interested  persons" of the Trust or of the  Adviser at a meeting  specifically
called  for the  purpose  of voting on such  approval,  and (ii) by the Board of
Trustees  of the Trust,  or by "vote of a  majority  of the  outstanding  voting
securities" of the Fund.

                                        -3-

<PAGE>

         This Agreement may be terminated at any time without the payment of any
penalty by the  Trustees  or by "vote of a majority  of the  outstanding  voting
securities" of the Fund, or by the Adviser,  in each case on not more than sixty
days' nor less than  thirty  days'  written  notice  to the  other  party.  This
Agreement shall automatically terminate in the event of its "assignment".

         This  Agreement  may be amended  only if such  amendment is approved by
"vote of a majority of the outstanding voting securities" of the Fund.

         Article  9.  Scope  of  Trust's  Obligations.  A copy  of  the  Trust's
Declaration of Trust is on file with the Secretary of State of The  Commonwealth
of  Massachusetts.  The Adviser  acknowledges that the obligations of or arising
out of  this  Agreement  are  not  binding  upon  any of the  Trust's  trustees,
officers, employees, agents or shareholders individually, but are binding solely
upon the assets and property of the Trust.  If this Agreement is executed by the
Trust  on  behalf  of one or more  series  of the  Trust,  the  Adviser  further
acknowledges  that the assets and  liabilities  of each  series of the Trust are
separate  and  distinct  and  that the  obligations  of or  arising  out of this
Agreement are binding  solely upon the assets or property of the series on whose
behalf the Trust has executed this Agreement.

         Article  10.  Definitions.  The terms  "specifically  approved at least
annually,"  "vote  of  a  majority  of  the  outstanding   voting   securities,"
"assignment,"  "affiliated  person," and "interested  person," when used in this
Agreement,  shall have the respective meanings specified, and shall be construed
in a manner  consistent  with, the Investment  Company Act of 1940 and the Rules
and Regulations promulgated thereunder,  subject, however, to such exemptions as
may be granted by the Securities and Exchange Commission under said Act.

         Article 11. Record Keeping. The Adviser will maintain records in a form
acceptable to the Trust and in compliance  with the rules and regulations of the
Securities  and  Exchange  Commission,  including  but not  limited  to  records
required to be maintained by Section 31(a) of the Investment Company Act of 1940
and the rules  thereunder,  which at all times will be the property of the Trust
and will be available for inspection and use by the Trust.

                                        -4-

<PAGE>


         IN WITNESS  WHEREOF,  the  parties  have caused  this  Agreement  to be
executed and  delivered  in their names and on their behalf by the  undersigned,
thereunto duly authorized,  and their respective seals to be hereto affixed, all
as of the day and year first written above. The undersigned Trustee of the Trust
has  executed  this  Agreement  not  individually,  but  as  Trustee  under  the
Declaration.


                                        MFS VARIABLE INSURANCE TRUST, on behalf 
                                         of MFS NEW DISCOVERY SERIES, one of 
                                         its series



                                        By:___________________________
                                             James R. Bordewick, Jr.
                                              Assistant Secretary




                                        MASSACHUSETTS FINANCIAL SERVICES COMPANY


                                       By:____________________________
                                            Arnold D. Scott
                                            Senior Executive Vice President

                                        -5-


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