DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
485BPOS, 1998-07-29
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                                                          File Nos. 811-8211
                                                                   333-26513
                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549

                                  FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933               [X]

     Pre-Effective Amendment No.                                      [ ]
   

     Post-Effective Amendment No. 2                                   [X]
    

                                   and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940       [X]
   

     Amendment No. 2                                                  [X]
    

                       (Check appropriate box or boxes.)

              DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
             (Exact Name of Registrant as Specified in Charter)

          c/o The Dreyfus Corporation
          200 Park Avenue, New York, New York          10166
          (Address of Principal Executive Offices)     (Zip Code)

     Registrant's Telephone Number, including Area Code: (212) 922-6000

                            Mark N. Jacobs, Esq.
                               200 Park Avenue
                          New York, New York 10166
                   (Name and Address of Agent for Service)

Approximate Date of Proposed Public Offering:  As soon as practicable after
this Registration Statement is declared effective.

It is proposed that this filing will become effective (check appropriate
box)
   

          immediately upon filing pursuant to paragraph (b)
     ----
      X   on August 1, 1998 pursuant to paragraph (b)
     ----
          60 days after filing pursuant to paragraph (a)(i)
     ----
          on     (date)      pursuant to paragraph (a)(i)
     ----
          75 days after filing pursuant to paragraph (a)(ii)
     ----
          on     (date)      pursuant to paragraph (a)(ii) of Rule 485
     ----
    

              DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
                Cross-Reference Sheet Pursuant to Rule 495(a)
Items in
Part A of
Form N-1A     Caption                                       Page
_________     _______                                       ____
   

  1           Cover Page                                     Cover

  2           Synopsis                                       4

  3           Condensed Financial Information                4

  4           General Description of Registrant              5

  5           Management of the Fund                         6

  5(a)        Management's Discussion of Fund's Performance  *

  6           Capital Stock and Other Securities             10

  7           Purchase of Securities Being Offered           7

  8           Redemption or Repurchase                       8

  9           Pending Legal Proceedings                      *
    

Items in
Part B of
Form N-1A
_________
   

  10          Cover Page                                     Cover

  11          Table of Contents                              Cover

  12          General Information and History                B-15

  13          Investment Objectives and Policies             B-2

  14          Management of the Fund                         B-6

  15          Control Persons and Principal                  B-6
              Holders of Securities

  16          Investment Advisory and Other                  B-9
              Services
    

_____________________________________
NOTE:  * Omitted since answer is negative or inapplicable.
              DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
          Cross-Reference Sheet Pursuant to Rule 495(a) (continued)

Items in
Part B of
Form N-1A     Caption                                      Page
_________     _______                                      _____
   

  17          Brokerage Allocation                         B-13

  18          Capital Stock and Other Securities           B-14

  19          Purchase, Redemption and Pricing             B-11
              of Securities Being Offered

  20          Tax Status                                   B-13

  21          Underwriters                                 B-12

  22          Calculations of Performance Data             B-14

  23          Financial Statements                         B-16
    

Items in
Part C of
Form N-1A
_________
   

  24          Financial Statements and Exhibits            C-1

  25          Persons Controlled by or Under               C-3
              Common Control with Registrant

  26          Number of Holders of Securities              C-3

  27          Indemnification                              C-3

  28          Business and Other Connections of            C-4
              Investment Adviser

  29          Principal Underwriters                       C-10

  30          Location of Accounts and Records             C-13

  31          Management Services                          C-13

  32          Undertakings                                 C-13
    

_____________________________________
NOTE:  * Omitted since answer is negative or inapplicable.

- --------------------------------------------------------------------------------
   
PROSPECTUS                                              AUGUST 1, 1998
    

               DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
- --------------------------------------------------------------------------------

   DREYFUS INSTITUTIONAL PREFERRED MONEY  MARKET  FUND  (THE  "FUND" ) IS  AN
OPEN-END,  DIVERSIFIED,  MANAGEMENT  INVESTMENT COMPANY, KNOWN AS A MONEY
MARKET MUTUAL  FUND.  THE  FUND' S INVESTMENT OBJECTIVE IS TO PROVIDE INVESTORS
WITH AS HIGH A LEVEL OF CURRENT INCOME AS IS CONSISTENT WITH THE PRESERVATION
OF CAPITAL AND THE MAINTENANCE OF LIQUIDITY.

   THE DREYFUS CORPORATION SERVES AS THE FUND'S INVESTMENT ADVISER.

   AN INVESTMENT IN THE FUND IS NEITHER INSURED NOR GUARANTEED BY THE U.S.
GOVERNMENT.  THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN A
STABLE NET ASSET VALUE OF $1.00 PER SHARE.
                              --------------------

   THIS  PROSPECTUS SETS FORTH CONCISELY INFORMATION  ABOUT THE FUND THAT AN
INVESTOR SHOULD KNOW BEFORE INVESTING. IT SHOULD BE READ AND RETAINED FOR FUTURE
REFERENCE.
   

   THE  STATEMENT  OF ADDITIONAL INFORMATION, DATED AUGUST 1, 1998, WHICH MAY BE
REVISED  FROM  TIME  TO  TIME, PROVIDES A FURTHER DISCUSSION OF CERTAIN AREAS IN
THIS PROSPECTUS AND OTHER MATTERS WHICH MAY BE OF INTEREST TO SOME INVESTORS. IT
HAS  BEEN  FILED WITH THE SECURITIES AND EXCHANGE COMMISSION AND IS INCORPORATED
HEREIN BY REFERENCE. THE SECURITIES AND EXCHANGE COMMISSION MAINTAINS A WEB SITE
(HTTP: //WWW.SEC.GOV)  THAT  CONTAINS  THE  STATEMENT OF ADDITIONAL INFORMATION,
MATERIAL  INCORPORATED  BY  REFERENCE, AND OTHER INFORMATION REGARDING THE FUND.
FOR A FREE COPY OF THE STATEMENT OF ADDITIONAL INFORMATION, WRITE TO THE FUND AT
144   GLENN   CURTISS   BOULEVARD,  UNIONDALE,  NEW  YORK  11556-0144,  OR  CALL
1-800-346-3621.
    

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

   MUTUAL  FUND  SHARES  ARE  NOT  DEPOSITS  OR OBLIGATIONS OF, OR GUARANTEED OR
ENDORSED  BY,  ANY  BANK,  AND  ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT
INSURANCE  CORPORATION,  THE  FEDERAL  RESERVE  BOARD,  OR ANY OTHER AGENCY. ALL
MUTUAL FUND SHARES INVOLVE CERTAIN INVESTMENT RISKS, INCLUDING THE POSSIBLE LOSS
OF PRINCIPAL.
- --------------------------------------------------------------------------------

                TABLE OF CONTENTS
   

                                                           PAGE

ANNUAL FUND OPERATING EXPENSES............................... 3
CONDENSED FINANCIAL INFORMATION.............................. 4
YIELD INFORMATION............................................ 4
DESCRIPTION OF THE FUND...................................... 5
MANAGEMENT OF THE FUND....................................... 6
HOW TO BUY SHARES............................................ 7
HOW TO REDEEM SHARES......................................... 8
DIVIDENDS, DISTRIBUTIONS AND TAXES........................... 9
GENERAL INFORMATION.......................................... 10
APPENDIX..................................................... 12
    

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


                     [This Page Intentionally Left Blank]

[Page 2]

<TABLE>
<CAPTION>

                        ANNUAL FUND OPERATING EXPENSES
                 (as a percentage of average daily net assets)




<S>                                                                  <C>                   <C>                  <C>
     Management Fees..........................................................................................  .10%
     Total Fund Operating Expenses............................................................................  .10%

EXAMPLE:                                                             1 YEAR                 3 YEARS

     You would pay the following expenses on a $1,000
     investment, assuming (1) 5% annual return and
     (2) redemption at the end of each time period:                    $1                     $3
</TABLE>
- ------------------------------------------------------------------------------

   THE  AMOUNTS LISTED IN THE EXAMPLE SHOULD NOT BE CONSIDERED AS REPRESENTATIVE
OF PAST OR FUTURE EXPENSES AND ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE
INDICATED.  MOREOVER,  WHILE  THE EXAMPLE ASSUMES A 5% ANNUAL RETURN, THE FUND'S
ACTUAL  PERFORMANCE WILL VARY AND MAY RESULT IN AN ACTUAL RETURN GREATER OR LESS
THAN 5%.
- --------------------------------------------------------------------------------

   The purpose of the foregoing table is to assist investors in understanding
the costs and expenses to be borne by the Fund, the payment of which will
reduce investors' annual return. The Dreyfus Corporation has agreed to pay all
of the Fund's expenses, except the management fee, brokerage commissions,
taxes, interest, fees and expenses of non-interested Board members, fees and
expenses of independent counsel to the Fund and to the non-interested Board
members, and extraordinary expenses.  The  Dreyfus Corporation also has agreed
to reduce its management  fee in an amount equal to the accrued fees and
expenses of the non-interested  Board  members,  and fees and expenses of
independent counsel to the Fund and to the non-interested Board members. See
"Management of the Fund."

[Page 3]

                        CONDENSED FINANCIAL INFORMATION
   

The information in the following table has been audited by Ernst & Young LLP,
the  Fund's independent auditors.  Further financial data, related notes and
report of independent auditors accompany the Statement of Additional
Information, available upon request.
    

                             FINANCIAL HIGHLIGHTS

   Contained below is per share operating performance data for a share of
beneficial interest outstanding, total investment  return, ratios to average
net assets and other supplemental data for the period from June 11, 1997
(commencement of operations) to March 31, 1998.  This information has been
derived from the Fund's financial statements.

   

                                                               PERIOD ENDED
                                                              MARCH 31, 1998
                                                            ------------------

PER SHARE DATA:
Net asset value, beginning of period.........................       $1.00
  INVESTMENT OPERATIONS:
   Investment income--net....................................         .046
                                                                     -----
   DISTRIBUTIONS:
   Dividends from investment income--net.....................        (.046)
   Net asset value, end of period............................       $1.00
                                                                     ======
TOTAL INVESTMENT RETURN......................................        5.76%*
RATIOS/SUPPLEMENTAL DATA:
   Ratio of expenses to average net assets..................          .10%*
   Ratio of net investment income
     to average net assets..................................         5.64%*
   Net Assets, end of period (000's omitted)................    $1,496,626
- -----------------
*  Annualized.
    


                               YIELD INFORMATION

   From time to time, the Fund advertises its yield and effective yield.  Both
yield  figures are based on historical earnings and are not intended to
indicate future  performance.  It can be expected that these yields will
fluctuate substantially.  The yield of the Fund refers to the income generated
by an investment in the Fund over a seven-day period (which period will be
stated in the advertisement) . This income is then annualized. That is, the
amount of income generated by the investment during that week is assumed to be
generated each week over a 52-week period and is shown as a percentage of the
investment.  The effective yield is calculated similarly, but, when annualized,
the income earned by an investment in the Fund is assumed to be reinvested.
The effective yield will be slightly higher than the yield because of the
compounding effect of this assumed reinvestment. The Fund's yield and effective
yield may reflect absorbed expenses pursuant to any undertaking that may be in
effect.  See "Management of the Fund."

   Yield  information is useful in reviewing the Fund's performance, but because
yields will fluctuate, under certain conditions such information may not provide
a basis for comparison with domestic bank deposits, other investments which pay
a fixed  yield for a stated period of time, or other investment companies which
may use a different method of computing yield.

   Comparative performance information may be used from time to time in
advertising or marketing the Fund's shares, including data from Lipper
Analytical Services, Inc., Bank Rate Monitor(tm), IBC's Money Fund Report(tm),
Morningstar, Inc. and other industry publications.

[Page 4]

                            DESCRIPTION OF THE FUND

INVESTMENT OBJECTIVE

   The  Fund's investment objective is to provide investors with as high a level
of current income as is consistent with the preservation of capital and the
maintenance of liquidity. It cannot be changed without approval by the holders
of a majority (as defined in the 1940 Act) of the Fund's outstanding voting
shares.  There  can be no assurance that the Fund's investment objective will be
achieved.  Securities in which the Fund invests may not earn as high a level of
current income as long-term or lower quality securities which generally have
less liquidity, greater market risk and more fluctuation in market value.
   

MANAGEMENT POLICIES
The Fund invests in short-term money market obligations, including securities
issued or guaranteed by the U.S. Government or its agencies or
instrumentalities, U.S. dollar denominated time deposits,  certificates of
deposit, bankers' acceptances and other short-term obligations issued by
domestic banks, foreign subsidiaries or foreign branches of domestic banks,
domestic and foreign branches of foreign banks and thrift institutions,
repurchase agreements, asset-backed securities, and high quality domestic and
foreign commercial paper and other short-term corporate obligations, including
those with floating or variable rates of interest. See "Appendix--Certain
Portfolio  Securities."  In addition, the Fund is permitted to lend portfolio
securities and enter into reverse repurchase agreements.  See "Appendix--
Investment Techniques." During normal market conditions, at least 25% of the
Fund's total assets will be invested in bank obligations. See "Investment
Considerations and Risks" below.
    

The Fund seeks to maintain a net asset value of $1.00 per share for purchases
and  redemptions.  To  do so, the Fund uses the amortized cost method of valuing
its  securities  pursuant  to  Rule 2a-7 under the 1940 Act, which Rule includes
various  maturity,  quality,  and diversification requirements, certain of which
are summarized below.
   
   In accordance with Rule 2a-7, the Fund is required to maintain a dollar-
weighted average portfolio maturity of 90 days or less, purchase only
instruments having remaining maturities of 13 months or less and invest only in
U.S. dollar denominated securities determined in accordance with procedures
established by the Fund's Board to present minimal credit risks and which are
rated in one of the two highest rating categories for debt obligations by at
least  two nationally recognized statistical rating organizations (or one
rating organization if the instrument was rated only by one such organization)
or, if unrated, are of comparable quality as determined in accordance with
procedures established by the Board. Moreover, the Fund will purchase only
instruments so rated in the highest rating category or, if unrated, of
comparable quality as determined in accordance with procedures established by
the Fund's Board.  The nationally recognized statistical rating organizations
currently rating instruments of the type the Fund may purchase are Moody's
Investors Service, Inc., Standard & Poor's Ratings Group, Duff & Phelps Credit
Rating Co., Fitch IBCA,  Inc. and Thomson BankWatch, Inc. and their rating
criteria are described in the "Appendix" to the Statement of Additional
Information.
    

   For further information  regarding the amortized cost method of valuing
securities,  see  "Determination  of  Net  Asset  Value" in the Statement of
Additional Information.  There can be no assurance that the Fund will be able
to maintain a stable net asset value of $1.00 per share.

INVESTMENT CONSIDERATIONS AND RISKS

GENERAL  -- The Fund attempts to increase yields by trading to take advantage
of short-term  market  variations.  This  policy  is  expected  to  result  in
high portfolio  turnover  but  should  not  adversely  affect the Fund since
the Fund usually  does  not  pay  brokerage  commissions  when  it  purchases
short-term obligations.  The  value of  the

[Page 5]

portfolio  securities  held  by  the  Fund  will  vary  inversely  to changes
in prevailing  interest rates. Thus, if interest rates have increased from the
time a  security was purchased, such security, if sold, might be sold at a
price less than  its  cost.  Similarly,  if  interest  rates  have declined
from the time a security was purchased, such security, if sold, might be sold
at a price greater than  its  purchase  cost.  In either instance, if the
security was purchased at face value and held to maturity, no gain or loss
would be realized.

BANK  SECURITIES -- To the extent the Fund's investments are concentrated in
the banking  industry,  the  Fund  will have correspondingly greater exposure
to the risk  factors  which are characteristic of such investments. Sustained
increases in interest rates can adversely affect the availability or liquidity
and cost of capital  funds  for  a bank's lending activities, and a
deterioration in general economic  conditions  could increase the exposure to
credit losses. In addition, the value of and the investment return on the
Fund's shares could be affected by economic or regulatory developments in or
related to the banking industry, which industry  also  is  subject  to  the
effects  of competition within the banking industry  as well  as  with  other
types  of financial institutions. The Fund, however, will seek to minimize its
exposure to such risks by investing only in debt securities which are
determined to be of highest quality.

FOREIGN  SECURITIES  -- Since the Fund's portfolio may contain securities issued
by  foreign  subsidiaries  or  foreign  branches of domestic banks, domestic and
foreign  branches  of  foreign  banks,  and  commercial  paper issued by foreign
issuers,  the Fund may be subject to additional investment risks with respect to
such  securities  that  are  different in some respects from those incurred by a
fund  which  invests only in debt obligations of U.S. domestic issuers, although
such  obligations may be higher yielding when compared to the securities of U.S.
domestic  issuers.  Such  risks  include  possible future political and economic
developments,  seizure  or  nationalization  of  foreign deposits, imposition of
foreign  withholding  taxes  on  interest  income  payable  on  the  securities,
establishment  of  exchange  controls, or adoption of other foreign governmental
restrictions  which might adversely affect the payment of principal and interest
on these securities.

SIMULTANEOUS   INVESTMENTS  --  Investment  decisions  for  the  Fund  are  made
independently  from  those  of other investment companies advised by The Dreyfus
Corporation.  If,  however, such other investment companies desire to invest in,
or  dispose  of,  the  same  securities  as  the  Fund, available investments or
opportunities  for sales will be allocated equitably to each investment company.
In  some  cases,  this  procedure  may adversely affect the size of the position
obtained  for  or  disposed  of by the Fund or the price paid or received by the
Fund.

                            MANAGEMENT OF THE FUND
   

INVESTMENT  ADVISER  -- The Dreyfus Corporation, located at 200 Park Avenue, New
York,  New  York  10166,  was formed in 1947 and serves as the Fund's investment
adviser.  The  Dreyfus  Corporation is a wholly-owned subsidiary of Mellon Bank,
N.A.,  which is a wholly-owned subsidiary of Mellon Bank Corporation ("Mellon").
As   of   May   31,  1998,  The  Dreyfus  Corporation  managed  or  administered
approximately  $109  billion  in  assets  for approximately 1.7 million investor
accounts nationwide.
    

   The  Dreyfus  Corporation supervises and assists in the overall management of
the  Fund' s  affairs under a Management Agreement with the Fund, subject to the
authority of the Fund's Board in accordance with Massachusetts law.
   

   Mellon  is  a  publicly  owned  multibank  holding company incorporated under
Pennsylvania  law  in 1971 and registered under the Federal Bank Holding Company
Act  of  1956,  as  amended.  Mellon provides a comprehensive range of financial
products  and services in domestic and selected international markets. Mellon is
among  the twenty-five largest bank holding companies in the United States based
on  total  assets. Mellon's principal wholly-owned subsidiaries are Mellon Bank,
N.A.,  Mellon  Bank  (DE)  National  Association,  Mellon  Bank (MD), The Boston
Company, Inc., AFCO Credit Corporation and a number of companies known as Mellon
Financial Services Corporations. Through its subsidiaries, including The Dreyfus
Corporation, Mellon managed

[Page 6]

more  than  $328  billion  in  assets  as  of  March  31,  1998, including
approximately  $113  billion  in proprietary mutual fund assets. As of March 31,
1998,  Mellon,  through  various subsidiaries, provided non-investment services,
such  as  custodial or administration services, for more than $1.666 trillion in
assets, including approximately $67 billion in mutual fund assets.
    
   

   For  the  period from June 11, 1997 (commencement of operations) to March 31,
1998,  the  Fund  paid  The  Dreyfus Corporation a monthly management fee at the
annual  rate  of  .10 of 1% of the value of the Fund's average daily net assets.
The  Dreyfus  Corporation pays all of the Fund's expenses, except the management
fee, brokerage commissions, taxes, interest, fees and expenses of non-interested
Board  members,  fees and expenses of independent counsel to the Fund and to the
non-interested Board members and extraordinary expenses. The Dreyfus Corporation
also  has  agreed to reduce its management fee in an amount equal to the accrued
fees  and expenses of the non-interested Board members, and fees and expenses of
independent  counsel  to  the Fund and to the non-interested Board members. From
time  to  time,  The Dreyfus Corporation may waive receipt of its management fee
and/or  voluntarily  assume certain additional expenses of the Fund, which would
have  the  effect of lowering the expense ratio of the Fund and increasing yield
to  investors.  The  Fund  will  not  reimburse  The Dreyfus Corporation for any
amounts  it  may  waive, nor will the Fund reimburse The Dreyfus Corporation for
any amounts it may assume.
    

In allocating brokerage transactions, The Dreyfus Corporation seeks to obtain
the  best  execution  of orders at the most favorable net price. Subject to this
determination,  The  Dreyfus  Corporation  may consider, among other things, the
receipt  of  research  services  and/or  the sale of shares of the Fund or other
funds  managed, advised or administered by The Dreyfus Corporation as factors in
the  selection of broker-dealers to execute portfolio transactions for the Fund.
See "Portfolio Transactions" in the Statement of Additional Information.

   The  Dreyfus  Corporation  may  pay  the  Fund' s distributor for shareholder
services  from  The Dreyfus Corporation's own assets, including past profits but
not  including  the  management fee paid by the Fund. The Fund's distributor may
use  part  or  all  of  such  payments to pay service agents in respect of these
services.

DISTRIBUTOR -- The Fund's distributor is Premier Mutual Fund Services, Inc. (the
" Distributor" ), located  at  60 State Street, Boston, Massachusetts 02109. The
Distributor's ultimate parent is Boston Institutional Group, Inc.

TRANSFER  AND DIVIDEND DISBURSING AGENT AND CUSTODIAN -- Dreyfus Transfer, Inc.,
a wholly-owned subsidiary of The Dreyfus Corporation, P.O. Box 9671, Providence,
Rhode  Island  02940-9671,  is the Fund's Transfer and Dividend Disbursing Agent
(the  "Transfer  Agent" ). The Bank of New York, 90 Washington Street, New York,
New York 10286, is the Fund's Custodian (the "Custodian").

                               HOW TO BUY SHARES

   The  Fund  is designed for institutional investors, particularly colleges and
universities  for  the investment of endowment and other funds. Fund shares will
not  be  sold to institutions which desire to use the Fund as a commercial sweep
account.

The minimum initial investment is $1 billion, unless the investor has, in the
opinion  of  Dreyfus  Institutional  Services  Division,  a  division of Dreyfus
Service Corporation, adequate intent and availability of funds to reach a future
level of investment of $1 billion. There is no minimum for subsequent purchases.
The  initial  investment  must  be accompanied by the Account Application. Stock
certificates   are   issued  only  upon  the  investor' s  written  request.  No
certificates  are  issued  for fractional shares. The Fund reserves the right to
reject any purchase order.

   Fund  shares  may  be purchased by wire, by telephone or through a compatible
automated  interface  or  trading  system.  All  payments should be made in U.S.
dollars  and,  to  avoid fees and delays, should be drawn only on U.S. banks. To
place  an  order by telephone, or to determine whether their computer facilities
are    compatible    with    the

       [Page 7]

Fund's,  investors  should telephone Dreyfus Institutional Services Division at
one  of  the  telephone  numbers  listed  under  "General  Information"  in this
Prospectus.

   Fund  shares  are sold on a continuous basis at the net asset value per share
next  determined  after  an  order  in  proper form and Federal Funds (monies of
member  banks  in  the  Federal  Reserve  System  which are held on deposit at a
Federal  Reserve  Bank)  are received by the Custodian or by any agent or entity
subject  to  the direction of such agents. If an investor does not remit Federal
Funds,  its  payment  must  be converted into Federal Funds. This usually occurs
within  one  business day of receipt of a bank wire and within two business days
of  receipt  of  a  check  drawn on a member bank of the Federal Reserve System.
Checks  drawn  on  banks which are not members of the Federal Reserve System may
take  considerably  longer  to  convert  into Federal Funds. Prior to receipt of
Federal Funds, the investor's money will not be invested.

   The  Fund's net asset value per share is determined as of 5:00 p.m., New York
time,  on each day the New York Stock Exchange or the Transfer Agent is open for
business.  Net  asset  value  per share is computed by dividing the value of the
Fund' s net assets (i.e., the value of its assets less liabilities) by the total
number  of  shares  outstanding.  See  "Determination of Net Asset Value" in the
Statement of Additional Information.

   Investors  whose  orders are placed and payments are received in or converted
into  Federal  Funds  by the Custodian by 12:00 Noon, New York time, will become
effective  at the price determined at 5:00 p.m., New York time, and will receive
the  dividend  declared  on such day. Except as described below, investors whose
payments  are  received in or converted into Federal Funds after 12:00 Noon, New
York  time,  by  the  Custodian, will begin to accrue dividends on the following
business day.

   Orders  in proper form received by Dreyfus Institutional Services Division in
New York after 12:00 Noon, New York time, but prior to 5:00 p.m., New York time,
and  payments  for  which  are  received by the Custodian by 6:00 p.m., New York
time, will become effective at the price determined at 5:00 p.m., New York time,
and the shares so purchased will receive the dividend declared on such day.

   Federal  regulations  require  that  an investor provide a certified Taxpayer
Identification  Number  (" TIN" ) upon  opening  or  reopening  an  account. See
" Dividends,  Distributions  and  Taxes"  and the Fund's Account Application for
further  information concerning this requirement. Failure to furnish a certified
TIN  to  the  Fund could subject the shareholder to a $50 penalty imposed by the
Internal Revenue Service (the "IRS").

                             HOW TO REDEEM SHARES

GENERAL

   Investors  may  request redemption of their shares at any time and the shares
will be redeemed at the next determined net asset value.

   The  Fund imposes no charges when shares are redeemed. Any stock certificates
representing  Fund  shares  being redeemed must be submitted with the redemption
request.  The  value  of  the  shares  redeemed  may  be more or less than their
original cost, depending upon the Fund's then-current net asset value.

   If  a  request  for redemption is received in proper form, and transmitted to
the  Custodian  in  New  York  by  5:00 p.m., New York time, the proceeds of the
redemption,  if transfer by wire is requested, ordinarily will be transmitted in
Federal  Funds  on  the  same  day  and the shares will not receive the dividend
declared on that day. If the request is received later that day in New York, the
shares  will  receive  the  dividend  declared  on  that day and the proceeds of
redemption,  if  wire  transfer  is requested, ordinarily will be transmitted in
Federal Funds on the next business day.

   The  Fund  ordinarily  will make payment for all shares redeemed within seven
days  after  receipt  by Dreyfus Institutional Services Division of a redemption
request  in  proper  form, except as provided by the rules of the Securities and
Exchange Commission.

[Page 8]

PROCEDURES

   Investors  may  redeem  Fund  shares  by  wire  or  telephone,  or  through a
compatible automated interface or trading system, as described below.

   If  an  investor  selects  a telephone redemption privilege (which is granted
automatically  unless  the  investor  refuses  it) , the investor authorizes the
Transfer  Agent  to  act  on telephone instructions from any person representing
himself  or  herself  to  be  an  authorized representative of the investor, and
reasonably  believed  by the Transfer Agent to be genuine. The Fund will require
the  Transfer Agent to employ reasonable procedures, such as requiring a form of
personal  identification,  to confirm that instructions are genuine and, if they
do  not follow such procedures, the Fund or the Transfer Agent may be liable for
any  losses due to unauthorized or fraudulent instructions. Neither the Fund nor
the   Transfer  Agent  will  be  liable  for  following  telephone  instructions
reasonably believed to be genuine.

   During  times  of  drastic  economic  or  market  conditions,  investors  may
experience  difficulty  in  contacting  the  Fund  or its agents by telephone to
request a redemption or exchange of Fund shares. In such cases, investors should
consider using the other redemption procedures described herein.

REDEMPTION  BY  WIRE OR TELEPHONE -- Investors may redeem Fund shares by wire or
telephone.  The redemption proceeds will be paid by wire transfer. Investors can
redeem  shares by telephone by calling one of the telephone numbers listed under
"General Information." The Fund reserves the right to refuse any request made by
wire  or  telephone and may limit the amount involved or the number of telephone
redemptions.  This  procedure  may  be modified or terminated at any time by the
Transfer  Agent  or the Fund. The Statement of Additional Information sets forth
instructions  for  redeeming  shares by wire. Shares for which certificates have
been issued may not be redeemed by wire or telephone.

REDEMPTION  THROUGH  COMPATIBLE AUTOMATED FACILITIES -- The Fund makes available
to  institutions  the  ability  to  redeem shares through a compatible automated
interface  or trading system. Investors desiring to redeem shares in this manner
should  call  Dreyfus  Institutional  Services  Division at one of the telephone
numbers  listed under "General Information" to determine whether their automated
facilities  are  compatible  and to receive instructions for redeeming shares in
this manner.

                      DIVIDENDS, DISTRIBUTIONS AND TAXES

The Fund ordinarily declares dividends from net investment income on each day
the  New  York  Stock  Exchange or the Transfer Agent is open for business. Fund
shares  begin  earning  income  dividends  on  the  day  the  purchase  order is
effective.  Dividends  usually  are paid on the last calendar day of each month,
and  are  automatically  reinvested in additional Fund shares at net asset value
or,  at  the investor's option, paid in cash. The Fund's earnings for Saturdays,
Sundays and holidays are declared as dividends on the preceding business day. If
an  investor redeems all shares in its account at any time during the month, all
dividends  to which the investor is entitled are paid along with the proceeds of
the  redemption.  Distributions  from  net  realized  securities  gains, if any,
generally are declared and paid once a year, but the Fund may make distributions
on  a  more  frequent  basis to comply with the distribution requirements of the
Internal  Revenue  Code  of  1986,  as  amended (the "Code"), in all events in a
manner  consistent  with  the provisions of the 1940 Act. The Fund will not make
distributions from net realized securities gains unless capital loss carryovers,
if  any,  have  been  utilized  or have expired. Investors may choose whether to
receive  distributions  in  cash or to reinvest in additional Fund shares at net
asset  value.  All expenses are accrued daily and deducted before declaration of
dividends    to    investors.
   

   Dividends  derived  from  net  investment income, together with distributions
from  any  net  realized  short-term securities gains and gains from the sale or
other disposition of certain market discount bonds, paid by the Fund are taxable
as  ordinary  income,  whether received in cash or reinvested in Fund shares, if
the  owner  of  Fund  shares  is  a citizen or resident of the United States. No
dividend    paid    by    the    Fund    will    qualify    for    the

[Page 9]

dividends received deduction allowable to certain  U.S. corporations.
Distributions  from net realized long-term securities gains of the Fund, if any,
generally are taxable as long-term capital gains for Federal income tax purposes
regardless  of  how  long  the  owner of the Fund shares has held the shares and
whether such distributions are received in cash or reinvested in additional Fund
shares  if  the  owner  of  Fund  shares  is a citizen or resident of the United
States.  The  Code provides that an individual generally will be taxed on his or
her net capital gain at a maximum rate of 20% with respect to capital gains from
securities held for more than twelve months.
    


   Dividends  derived  from  net  investment income, together with distributions
from  net  realized short-term securities gains and gains from the sale or other
disposition  of  certain market discount bonds, paid by the Fund with respect to
Fund shares beneficially owned by a foreign person generally are subject to U.S.
nonresident  withholding  taxes  at  the  rate of 30%, unless the foreign person
claims the benefit of a lower rate specified in a tax treaty. Distributions from
net  realized  long-term  securities gains paid by the Fund with respect to Fund
shares  beneficially  owned by a foreign person generally will not be subject to
U.S.  nonresident withholding tax. However, such distributions may be subject to
backup  withholding, as described below, unless the foreign person certifies his
non-U.S. residency status.

   Notice  as to the tax status of dividends and distributions will be mailed to
investors  annually.  Each investor also will receive periodic summaries of such
investor'  s  account  which  will  include  information  as  to  dividends  and
distributions from securities gains, if any, paid during the year.

   Federal   regulations  generally  require  the  Fund  to  withhold  (" backup
withholding" ) and remit to the U.S. Treasury 31% of dividends and distributions
from  net  realized  securities  gains of the Fund paid to a shareholder if such
shareholder  fails  to  certify either that the TIN furnished in connection with
opening  an account is correct, or that such shareholder has not received notice
from  the IRS of being subject to backup withholding as a result of a failure to
properly  report  taxable  dividend  or  interest income on a Federal income tax
return. Furthermore, the IRS may notify the Fund to institute backup withholding
if  the  IRS determines a shareholder's TIN is incorrect or if a shareholder has
failed  to  properly  report  taxable  dividend and interest income on a Federal
income tax return.

   A  TIN  is  either  the  Social  Security  number,  IRS  individual  taxpayer
identification  number, or employer identification number of the record owner of
the  account.  Any  tax  withheld  as  a  result  of backup withholding does not
constitute an additional tax imposed on the record owner of the account, and may
be claimed as a credit on the record owner's Federal income tax return.
   
   Management  believes that the Fund has qualified for the period from June
11, 1997 (commencement  of operations) to March 31, 1998 as a "regulated
investment company" under the Code. The Fund intends to continue to so qualify
so long as such qualification is in the best interests of its shareholders.
Such qualification  relieves  the Fund of any liability for Federal income tax
to the extent  its earnings are distributed in accordance with applicable
provisions of the  Code.  The Fund is subject to a non-deductible 4% excise
tax, measured with respect to certain undistributed amounts of taxable
investment income and capital gains.
    

   Each investor should consult its tax adviser regarding specific questions as
to Federal, state or local taxes.


                              GENERAL INFORMATION
   
   The  Fund  is organized as an unincorporated business trust under the laws
of the Commonwealth of Massachusetts, pursuant to an Amended and Restated
Agreement and  Declaration  of  Trust (the "Trust Agreement"), and commenced
operations on June  11, 1997. The Fund is authorized to issue an unlimited
number of shares of beneficial  interest,  par  value  $.001 per share. Each
share has one vote.  The Fund ordinarily

       [Page 10]

will  not hold shareholder meetings; however, shareholders under certain
circumstances  may have the right to call a meeting of shareholders for the
purpose of voting to remove Trustees.
    

   The  Transfer Agent maintains a record of each investor's ownership and sends
confirmations and statements of account.

Shareholder inquiries may be made by writing to the Fund at 144 Glenn Curtiss
Boulevard,  Uniondale,  New  York  11556-0144, or, by calling in New York State,
1-718-895-1650 or, outside New York State, 1-800-346-3621.

[Page 11]

                                   APPENDIX

INVESTMENT TECHNIQUES

BORROWING MONEY -- The Fund is permitted to borrow to the extent permitted under
the  1940  Act, which permits an investment company to borrow in an amount up to
33 1/3% of the value of its total assets. Except for when the Fund enters into
reverse repurchase agreements, as described below, the Fund currently intends to
borrow  money  only  for  temporary or emergency (not leveraging) purposes in an
amount  up  to  15%  of  the  value  of  its  total assets (including the amount
borrowed)  valued  at  the  lesser  of  cost  or  market,  less liabilities (not
including  the  amount  borrowed)  at the time the borrowing is made. While such
borrowings  exceed 5% of the value of the Fund's total assets, the Fund will not
make any additional investments. In addition, the Fund may borrow for investment
purposes  on a secured basis through entering into reverse repurchase agreements
as described below.

REVERSE  REPURCHASE  AGREEMENTS  --  The  Fund may enter into reverse repurchase
agreements with banks, brokers or dealers. Reverse repurchase agreements involve
the  transfer  by  the  Fund of an underlying debt instrument in return for cash
proceeds  based  on  a percentage of the value of the security. The Fund retains
the  right  to receive interest and principal payments on the security. The Fund
will  use the proceeds of reverse repurchase agreements only to make investments
which generally either mature, or have a demand feature to resell to the issuer,
at a date simultaneous with or prior to the expiration of the reverse repurchase
agreement.  At an agreed upon future date, the Fund repurchases the security, at
principal, plus accrued interest. As a result of these transactions, the Fund is
exposed to greater potential fluctuations in the value of its assets and its net
asset  value per share. These borrowings will be subject to interest costs which
may  or  may  not  be  recovered by appreciation of the securities purchased; in
certain  cases,  interest costs may exceed the return received on the securities
purchased.  Reverse  repurchase  agreements constitute borrowings under the 1940
Act  and,  therefore,  together  with  other  borrowings, will be subject to the
limitations on borrowing set forth in the 1940 Act.

LENDING  PORTFOLIO SECURITIES -- The Fund may lend securities from its portfolio
to   brokers,  dealers  and  other  financial  institutions  needing  to  borrow
securities  to  complete certain transactions. The Fund continues to be entitled
to  payments  in amounts equal to the interest or other distributions payable on
the  loaned securities which affords the Fund an opportunity to earn interest on
the  amount  of  the  loan  and  on  the loaned securities' collateral. Loans of
portfolio  securities  may  not exceed 33 1/3% of the value of the Fund's total
assets,  and  the  Fund  will  receive  collateral  consisting  of  cash or U.S.
Government  securities  which will be maintained at all times in an amount equal
to  at  least  100%  of  the current market value of the loaned securities. Such
loans  are  terminable  by  the Fund at any time upon specified notice. The Fund
might  experience risk of loss if the institution with which it has engaged in a
portfolio loan transaction breaches its agreement with the Fund.

FORWARD  COMMITMENTS  --  The  Fund  may  purchase money market instruments on a
forward  commitment  or when-issued basis, which means that delivery and payment
take  place  a  number of days after the date of the commitment to purchase. The
payment  obligation  and the interest rate receivable on a forward commitment or
when-issued security are fixed when the Fund enters into the commitment, but the
Fund does not make payment until it receives delivery from the counterparty. The
Fund will commit to purchase such securities only with the intention of actually
acquiring  the  securities,  but  the  Fund may sell these securities before the
settlement  date  if  it  is  deemed advisable. A segregated account of the Fund
consisting  of  permissible  liquid  assets  at  least equal at all times to the
amount  of  the  commitments  will  be  established and maintained at the Fund's
custodian bank.

CERTAIN PORTFOLIO SECURITIES

U.S.  GOVERNMENT  SECURITIES  -- The Fund may invest in U.S. Treasury securities
and other securities issued or guaranteed by the U.S. Government or its agencies
or    instrumentalities.    These    securities    differ    in

[Page 12]

their  interest rates, maturities and times of issuance. Some obligations issued
or guaranteed by U.S. Government agencies and instrumentalities are supported by
the  full  faith  and  credit  of  the U.S. Treasury; others by the right of the
issuer  to  borrow  from  the Treasury; others by discretionary authority of the
U.S.   Government   to   purchase   certain   obligations   of   the  agency  or
instrumentality; and others only by the credit of the agency or instrumentality.
These  securities  bear fixed, floating or variable rates of interest. While the
U.S.   Government   currently   provides   financial   support   to  such  U.S.
Government-sponsored  agencies  or  instrumentalities, no assurance can be given
that   it   will   always  do  so,  since  it  is  not  so  obligated  by  law.

REPURCHASE  AGREEMENTS  --  The  Fund  may enter into repurchase agreements with
certain  banks  and  non-bank dealers. In a repurchase agreement, the Fund buys,
and  the  seller agrees to repurchase, a security at a mutually agreed upon time
and  price  (usually  within  seven  days) . The  repurchase  agreement  thereby
determines  the  yield during the purchaser's holding period, while the seller's
obligation  to  repurchase  is  secured by the value of the underlying security.
Repurchase  agreements  could  involve  risks  in  the  event  of  a  default or
insolvency  of  the  other  party to the agreement, including possible delays or
restrictions upon the Fund's ability to dispose of the underlying securities.

BANK  OBLIGATIONS  --  The  Fund  may  purchase  certificates  of  deposit, time
deposits,  bankers'  acceptances  and  other  short-term  obligations  issued by
domestic  banks,  foreign  subsidiaries  or  foreign branches of domestic banks,
domestic  and  foreign  branches  of  foreign  banks,  domestic savings and loan
associations  and  other  banking  institutions. With respect to such securities
issued  by  foreign  subsidiaries  or  foreign  branches  of domestic banks, and
domestic  and  foreign  branches  of  foreign  banks, the Fund may be subject to
additional  investment  risks  that  are  different  in some respects from those
incurred  by  a  fund  which  invests  only in debt obligations of U.S. domestic
issuers.   See   "Description   of   the   Fund--Investment  Considerations  and
Risks--Foreign Securities."

Certificates of deposit are negotiable certificates evidencing the obligation
of a bank to repay funds deposited with it for a specified period of time.

Time deposits are non-negotiable deposits maintained in a banking institution
for  a specified period of time (in no event longer than seven days) at a stated
interest rate.

   Bankers'  acceptances  are  credit instruments evidencing the obligation of a
bank  to  pay  a  draft drawn on it by a customer. These instruments reflect the
obligation  both  of  the  bank  and  the  drawer  to pay the face amount of the
instrument   upon   maturity.  The  other  short-term  obligations  may  include
uninsured,  direct  obligations  bearing  fixed,  floating  or variable interest
rates.

COMMERCIAL   PAPER   --  Commercial  paper  consists  of  short-term,  unsecured
promissory notes issued to finance short-term credit needs. The commercial paper
purchased by the Fund will consist only of direct obligations issued by domestic
and  foreign  entities.  The  other  corporate obligations in which the Fund may
invest  consist  of  high  quality, U.S. dollar denominated short-term bonds and
notes (including variable amount master demand notes).

FLOATING  AND  VARIABLE  RATE  OBLIGATIONS -- The Fund may purchase floating and
variable  rate  demand  notes and bonds, which are obligations ordinarily having
stated  maturities in excess of 13 months, but which permit the holder to demand
payment  of  principal  at  any time, or at specified intervals not exceeding 13
months,  in  each  case upon not more than 30 days' notice. Variable rate demand
notes  include master demand notes which are obligations that permit the Fund to
invest  fluctuating  amounts,  at  varying rates of interest, pursuant to direct
arrangements  between  the  Fund, as lender, and the borrower. These obligations
permit  daily  changes  in  the  amounts borrowed. Because these obligations are
direct  lending  arrangements  between  the  lender  and  borrower,  it  is  not
contemplated that such instruments generally will be traded, and there generally
is  no  established  secondary  market  for these obligations, although they are
redeemable    at    face

[Page 13]


value,  plus  accrued  interest.  Accordingly,  where  these obligations are not
secured  by  letters  of credit or other credit support arrangements, the Fund's
right to redeem is dependent on the ability of the borrower to pay principal and
interest on demand.

ASSET-BACKED  SECURITIES  --  The  asset-backed securities in which the Fund may
invest  are  securities  issued by special purpose entities whose primary assets
consist  of  a pool of mortgages, loans, receivables or other assets. Payment of
principal  and  interest  may  depend largely on the cash flows generated by the
assets  backing  the  securities  and  in certain cases, supported by letters of
credit,  surety  bonds  or  other forms of credit or liquidity enhancements. The
value   of   these   asset-backed   securities  also  may  be  affected  by  the
creditworthiness  of  the servicing agent for the pool of assets, the originator
of  the  loans or receivables or the financial institutions providing the credit
support.

ILLIQUID  SECURITIES  --  The  Fund may invest up to 10% of the value of its net
assets  in  securities  as  to  which  a  liquid  trading market does not exist,
provided  such  investments are consistent with the Fund's investment objective.
Such  securities may include securities that are not readily marketable, such as
certain  securities  that  are  subject  to legal or contractual restrictions on
resale,  and  repurchase  agreements providing for settlement in more than seven
days  after  notice.  As to these securities, the Fund is subject to a risk that
should  the  Fund  desire  to sell them when a ready buyer is not available at a
price  the Fund deems representative of their value, the value of the Fund's net
assets could be adversely affected.

   NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR TO MAKE ANY
REPRESENTATIONS  OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND IN THE FUND'S
OFFICIAL  SALES  LITERATURE  IN  CONNECTION WITH THE OFFER OF THE FUND'S SHARES,
AND,  IF  GIVEN  OR  MADE, SUCH OTHER INFORMATION OR REPRESENTATIONS MUST NOT BE
RELIED  UPON  AS  HAVING  BEEN  AUTHORIZED BY THE FUND. THIS PROSPECTUS DOES NOT
CONSTITUTE  AN  OFFER  IN  ANY  STATE  IN  WHICH, OR TO ANY PERSON TO WHOM, SUCH
OFFERING MAY NOT LAWFULLY BE MADE.

[Page 14]

                     [This Page Intentionally Left Blank]

[Page 15]

                                  PROSPECTUS

                             Dreyfus Institutional

                                   Preferred

                                 Money Market

                                     Fund

(c) 1998 Dreyfus Service Corporation

                                                                       194p0898




        DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
                              PART B
              (STATEMENT OF ADDITIONAL INFORMATION)
   
                          AUGUST 1, 1998
    
   

     This Statement of Additional Information, which is not a prospectus,
supplements and should be read in conjunction with the current Prospectus
for Dreyfus Institutional Preferred Money Market Fund (the "Fund"), dated
August 1, 1998, as it may be revised from time to time. To obtain a copy of
the Fund's Prospectus, please write to the Fund at 144 Glenn Curtiss
Boulevard, Uniondale, New York 11556-0144, or call the following numbers:
    

          In New York State -- Call 1-718-895-1650
          Outside New York State -- Call Toll Free 1-800-346-3621

     The Dreyfus Corporation (the "Manager") serves as the Fund's investment
adviser.

     Premier Mutual Fund Services, Inc. (the "Distributor") serves as the
distributor of the Fund's shares.

                        TABLE OF CONTENTS
                                                            Page
   

Investment Objective and Management Policies ...............B-2
Management of the Fund .....................................B-6
Management Agreement .......................................B-9
How to Buy Shares ..........................................B-11
How to Redeem Shares .......................................B-11
Determination of Net Asset Value ...........................B-12
Dividends, Distributions and Taxes .........................B-13
Portfolio Transactions .....................................B-13
Yield Information ..........................................B-14
Information About the Fund .................................B-15
Transfer and Dividend Disbursing Agent, Custodian,
  Counsel and Independent Auditors .........................B-15
Financial Statements and Report of Independent Auditors ....B-16
Appendix ...................................................B-17
    


           INVESTMENT OBJECTIVE AND MANAGEMENT POLICIES

     The following information supplements and should be read in conjunction
with the sections in the Fund's Prospectus entitled "Description of the
Fund" and "Appendix."

Portfolio Securities

     Bank Obligations.  Domestic commercial banks organized under Federal
law are supervised and examined by the Comptroller of the Currency and are
required to be members of the Federal Reserve System and to have their
deposits insured by the Federal Deposit Insurance Corporation (the "FDIC").
Domestic banks organized under state law are supervised and examined by
state banking authorities but are members of the Federal Reserve System only
if they elect to join.  In addition, state banks whose certificates of
deposit ("CDs") may be purchased by the Fund are insured by the Bank
Insurance Fund administered by the FDIC (although such insurance may not be
of material benefit to the Fund, depending on the principal amount of the
CDs of each bank held by the Fund) and are subject to Federal examination
and to a substantial body of Federal law and regulation.  As a result of
Federal or state laws and regulations, domestic branches of domestic banks
whose CDs may be purchased by the Fund are, among other things, generally
required to maintain specified levels of reserves, are limited in the
amounts which they can loan to a single borrower and are subject to other
regulation designed to promote financial soundness.  However, not all of
such laws and regulations apply to the foreign branches of domestic banks.

     Obligations of foreign branches of domestic banks, foreign subsidiaries
of domestic banks and domestic and foreign branches of foreign banks, such
as CDs and time deposits ("TDs"), may be general obligations of the parent
banks in addition to the issuing branch, or may be limited by the terms of a
specific obligation and governmental regulation.  Such obligations are
subject to different risks than are those of domestic banks.  These risks
include foreign economic and political developments, foreign governmental
restrictions that may adversely affect payment of principal and interest on
the obligations, foreign exchange controls and foreign withholding and other
taxes on interest income.  Foreign branches and subsidiaries are not
necessarily subject to the same or similar regulatory requirements that
apply to domestic banks, such as mandatory reserve requirements, loan
limitations, and accounting, auditing and financial recordkeeping
requirements.  In addition, less information may be publicly available about
a foreign branch of a domestic bank or about a foreign bank than about a
domestic bank.

     Obligations of United States branches of foreign banks may be general
obligations of the parent bank in addition to the issuing branch, or may be
limited by the terms of a specific obligation or by Federal or state
regulation as well as governmental action in the country in which the
foreign bank has its head office.  A domestic branch of a foreign bank with
assets in excess of $1 billion may or may not be subject to reserve
requirements imposed by the Federal Reserve System or by the state in which
the branch is located if the branch is licensed in that state.

     In addition, Federal branches licensed by the Comptroller of the
Currency and branches licensed by certain states ("State Branches") may be
required to: (1) pledge to the regulator, by depositing assets with a
designated bank within the state, a certain percentage of their assets as
fixed from time to time by the appropriate regulatory authority; and (2)
maintain assets within the state in an amount equal to a specified
percentage of the aggregate amount of liabilities of the foreign bank
payable at or through all of its agencies or branches within the state.  The
deposits of Federal and State Branches generally must be insured by the FDIC
if such branches take deposits of less than $100,000.

     In view of the foregoing factors associated with the purchase of CDs
and TDs issued by foreign branches of domestic banks, by foreign
subsidiaries of domestic banks, by foreign branches of foreign banks or by
domestic branches of foreign banks, the Manager carefully evaluates such
investments on a case-by-case basis.

     The Fund may purchase CDs issued by banks, savings and loan
associations and similar thrift institutions with less than $1 billion in
assets, whose deposits are insured by the FDIC, provided the Fund purchases
any such CD in a principal amount of not more than $100,000, which amount
would be fully insured by the Bank Insurance Fund or the Savings Association
Insurance Fund administered by the FDIC.  Interest payments on such a CD are
not so insured.  The Fund will not own more than one such CD per such
issuer.

     Repurchase Agreements.  The Fund's custodian will have custody of, and
will hold in a segregated account, securities acquired by the Fund under a
repurchase agreement.  Repurchase agreements are considered by the staff of
Securities and Exchange Commission to be loans by the Fund.  In an attempt
to reduce the risk of incurring a loss on a repurchase agreement, the Fund
will enter into repurchase agreements only with domestic banks with total
assets in excess of $1 billion, or primary government securities dealers
reporting to the Federal Reserve Bank of New York, with respect to
securities of the type in which the Fund may invest, and will require that
additional securities be deposited with it if the value of the securities
purchased should decrease below the resale price.

     Illiquid Securities.  Where a substantial market of qualified
institutional buyers develops for certain restricted securities purchased by
the Fund pursuant to Rule 144A under the Securities Act of 1933, as amended,
the Fund intends to treat such securities as liquid securities in accordance
with procedures approved by the Fund's Board.  Because it is not possible to
predict with assurance how the market for restricted securities pursuant to
Rule 144A will develop, the Fund's Board has directed the Manager to monitor
carefully the Fund's investments in such securities with particular regard
to trading activity, availability of reliable price information and other
relevant information.  To the extent that, for a period of time, qualified
institutional buyers cease purchasing restricted securities pursuant to Rule
144A, the Fund's investing in such securities may have the effect of
increasing the level of illiquidity in the Fund's portfolio during such
period.

Management Policies

     Lending Portfolio Securities.  In connection with its securities
lending transactions, the Fund may return to the borrower and/or a third
party, which is unaffiliated with the Fund, and which is acting as a
"placing broker," a part of the interest earned from the investment of
collateral received for securities loaned.

     The Securities and Exchange Commission currently requires that the
following conditions must be met whenever portfolio securities are loaned:
(1) the Fund must receive at least 100% cash collateral from the borrower;
(2) the borrower must increase such collateral whenever the market value of
the securities rises above the level of such collateral; (3) the Fund must
be able to terminate the loan at any time; (4) the Fund must receive
reasonable interest on the loan, as well as any interest or other
distributions payable on the loaned securities, and any increase in market
value; and (5) the Fund may pay only reasonable custodian fees in connection
with the loan.
   

     Reverse Repurchase Agreements.  To the extent the Fund enters into a
reverse repurchase agreement, the Fund will maintain a segregated account
consisting of permissible liquid assets at least equal to the aggregate
amount of its reverse repurchase obligations, plus accrued interest, in
certain cases, in accordance with releases promulgated by the Securities and
Exchange Commission. The Securities and Exchange Commission views reverse
repurchase transactions as collateralized borrowings by the Fund.  Pursuant
to the Investment Company Act of 1940, as amended (the "1940 Act"), the Fund
must maintain continuous asset coverage (that is, total assets including
borrowings, less liabilities exclusive of borrowings) of 300% of the amount
borrowed. If the required coverage should decline as a result of market
fluctuations or other reasons, the Fund may be required to sell some of its
portfolio securities within three days to reduce the amount of its
borrowings and restore the 300% asset coverage, even though it may be
disadvantageous from an investment standpoint to sell securities at that
time.  Reverse repurchase agreements constitute borrowings under the 1940
Act and, therefore, together with other borrowings, will be subject to the
limitations on borrowing set forth in the 1940 Act.
    

     Forward Commitments.  Securities purchased on a forward commitment or
when-issued basis are subject to changes in value (generally changing in the
same way, i.e., appreciating when interest rates decline and depreciating
when interest rates rise) based upon the public's perception of the
creditworthiness of the issuer and changes, real or anticipated, in the
level of interest rates. Securities purchased on a forward commitment or
when-issued basis may expose the Fund to risks because they may experience
such fluctuations prior to their actual delivery.  Purchasing securities on
a when-issued basis can involve the additional risk that the yield available
in the market when the delivery takes place actually may be higher than that
obtained in the transaction itself.  Purchasing securities on a forward
commitment or when-issued basis when the Fund is fully or almost fully
invested may result in greater potential fluctuation in the value of the
Fund's net assets and its net asset value per share.

Investment Restrictions
   

     The Fund has adopted investment restrictions numbered 1 through 9 as
fundamental policies, which cannot be changed without approval by the
holders of a majority (as defined in the 1940 Act) of the Fund's outstanding
voting shares.  Investment restrictions numbered 10 and 11 are not
fundamental policies and may be changed by vote of a majority of the Fund's
Board members at any time.  The Fund may not:
    

     1.        Invest in commodities.

     2.        Borrow money, except to the extent permitted under the 1940 Act,
which currently limits borrowing to up to 33-1/3% of the value of the Fund's
total assets.

     3.        Purchase or sell securities on margin.

     4.        Issue any senior security (as such term is defined in Section
18(f) of the 1940 Act).

     5.        Act as underwriter of securities of other issuers, except to the
extent the Fund may be deemed an underwriter under the Securities Act of
1933, as amended, by virtue of disposing of portfolio securities.

     6.        Purchase, hold or deal in real estate, or oil, gas, or other
mineral leases or exploration or development programs, but the Fund may
purchase and sell securities that are secured by real estate or issued by
companies that invest in or deal in real estate.

     7.        Make loans to others except through the purchase of debt
obligations and the entry into repurchase agreements.  However, the Fund may
lend its portfolio securities in an amount not to exceed 33-1/3% of the
value of its total assets.  Any loans of portfolio securities will be made
according to guidelines established by the Securities and Exchange
Commission and the Fund's Board.

     8.        Invest more than 5% of its assets in the obligations of any one
issuer, except that up to 25% of the value of the Fund's total assets may be
invested without regard to any such limitations.

     9.        Invest less than 25% of its total assets in securities issued by
banks or invest more than 25% in the securities of issuers in any other
industry, provided that there shall be no limitation on the purchase of
obligations issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.  Notwithstanding the foregoing, for temporary defensive
purposes the Fund may invest less than 25% of its assets in bank
obligations.

     10.       Pledge, mortgage, hypothecate or otherwise encumber its assets,
except to the extent necessary to secure permitted borrowings and to the
extent related to the deposit of assets in escrow in connection with the
purchase of securities on a when-issued or forward commitment basis.

     11.       Enter into repurchase agreements providing for settlement in more
than seven days after notice or purchase securities which are illiquid if,
in the aggregate, more than 10% of the value of the Fund's net assets would
be so invested.

     If a percentage restriction is adhered to at the time of investment, a
later increase or decrease in percentage resulting from a change in values
or assets will not constitute a violation of that restriction.

                      MANAGEMENT OF THE FUND

     Board members and officers of the Fund, together with information as to
their principal business occupations during at least the last five years,
are shown below.

Board Members of the Fund
   

JOSEPH S. DiMARTINO, Chairman of the Board.  Since January 1995, Chairman of
     the Board of various funds in the Dreyfus Family of Funds.  He is a
     director of Noel Group, Inc., a venture capital company (for which from
     February 1995 until November 1997, he was Chairman of the Board), The
     Muscular Dystrophy Association, HealthPlan Services Corporation, a
     provider of marketing, administrative and risk management services to
     health and other benefit programs, Carlyle Industries, Inc. (formerly,
     Belding Heminway Company, Inc.), a button packager and distributor,
     Century Business Services, Inc., a provider of various outsourcing
     functions for small and medium sized companies, and Career Blazers Inc.
     (formerly, Staffing Resources, Inc.), a temporary placement agency.
     For more than five years prior to January 1995, he was President, a
     director and, until August 1994, Chief Operating Officer of the Manager
     and Executive Vice President and a director of Dreyfus Service
     Corporation, a wholly-owned subsidiary of the Manager.  From August
     1994 until December 31, 1994, he was a director of Mellon Bank
     Corporation.  He is 54 years old and his address is 200 Park Avenue,
     New York, New York 10166.
    
   
CLIFFORD L. ALEXANDER, JR., Board Member.  President of Alexander &
     Associates, Inc., a management consulting firm.  From 1977 to 1981, Mr.
     Alexander served as Secretary of the Army and Chairman of the Board of
     the Panama Canal Company, and from 1975 to 1977, he was a member of the
     Washington, D.C. law firm of Verner, Liipfert, Bernhard, McPherson and
     Alexander.  He is a director of American Home Products Corporation,
     Cognizant Corporation, a service provider of marketing information and
     information technology, The Dun & Bradstreet Corporation, MCI
     Communications Corporation, Mutual of America Life Insurance Company
     and TLC Beatrice International Holdings, Inc.  He is 64 years old and
     his address is 400 C Street, N.E., Washington, D.C. 20002.
    
   
LUCY WILSON BENSON, Board Member.  President of Benson and Associates,
     consultants to business and government.  Mrs. Benson is a director of
     COMSAT Corporation, General RE Corporation and Logistics Management
     Institute.  She is also a Trustee of the Alfred P. Sloan Foundation,
     Vice Chairman of the Board of Trustees of Lafayette College, Vice
     Chairman of the Citizens Network for Foreign Affairs, and a member of
     the Council on Foreign Relations.  Mrs. Benson served as a consultant
     to the U.S. Department of State and to SRI International from 1980 to
     1981.  From 1977 to 1980, she was Under Secretary of State for Security
     Assistance, Science and Technology.  She is 69 years old and her
     address is 46 Sunset Avenue, Amherst, Massachusetts 01002.
    

     Ordinarily, meetings of shareholders for the purpose of electing Board
members will not be held unless and until such time as less than a majority
of the Board members holding office have been elected by shareholders, at
which time the Board members then in office will call a shareholders'
meeting for the election of board members.  Under the 1940 Act, shareholders of
record of not less than two-thirds of the outstanding shares of the Fund may
remove a Board member through a declaration in writing or by vote cast in person
or by proxy at a meeting called for that purpose.  The Board members will call a
meeting of shareholders for the purpose of voting upon the question of removal
of any such board member when requested in writing to do so by the shareholders
of record of not less than 10% of the Fund's outstanding shares.
   

     The Fund typically pays its Board members an annual retainer and a per
meeting fee and reimburses them for their expenses.  Emeritus Board members are
entitled to receive an annual retainer and a per meeting fee of one-half the
amount paid to them as Board members.  The Chairman of the Board receives an
additional 25% of such compensation.  The aggregate compensation paid to each
Board member by the Fund, and by all other funds in the Dreyfus Family of Funds
for which such person is a Board member (the number of which is set forth in
parenthesis next to each Board member's total compensation) for the calendar
year ended December 31, 1997, was as follows:
    
   
                         Aggregate                     Total Compensation From
Name of Board            Compensation from             Fund and Fund Complex
Member                   Fund*                         Paid to Board Member
_____________            __________________       ______________________

Joseph S. DiMartino           $2,813                        $597,128 (94)

Clifford Alexander            $2,000                         $ 88,305 (19)

Lucy Wilson Benson            $2,250                         $ 74,055 (15)

__________________________________

* Amount does not include reimbursed expenses for attending Board
meetings, which amounted to $ 804.90 for all Board members as a group.
    

Officers of the Fund

MARIE E. CONNOLLY, President and Treasurer.  President, Chief Executive
     Officer, Chief Compliance Officer and a director of the Distributor
     and Funds Distributor, Inc., the ultimate parent of which is Boston
     Institutional Group, Inc., and an officer of other investment
     companies advised or administered by the Manager.  She is 40 years
     old.
   

MARGARET W. CHAMBERS, Vice President and Secretary.  Senior Vice President
     and General Counsel of Funds Distributor, Inc., and an officer of
     other investment companies advised or administered by the Manager.
     From August 1996 to March 1998, she was Vice President and Assistant
     General Counsel for Loomis, Sayles & Company, L.P.  From January 1986
     to July 1996, she was an associate with the law firm of Ropes & Gray.
     She is 38 years old.
    

MICHAEL S. PETRUCELLI, Vice President, Assistant Treasurer and Assistant
     Secretary.  Senior Vice President of Funds Distributor, Inc., and an
     officer of other investment companies advised or administered by the
     Manager.  From December 1989 through November 1996, he was employed by
     GE Investments where he held various financial, business development
     and compliance positions.  He also served as Treasurer of the GE Funds
     and as a Director of GE Investment Services.  He is 36 years old.
   

STEPHANIE D. PIERCE, Vice President, Assistant Treasurer and Assistant
     Secretary.  Vice President and Client Development Manager of Funds
     Distributor, Inc. and an officer of other investment companies advised
     or administered by the Manager.  From April 1997 to March 1998, she
     was employed as a Relationship Manager with Citibank, N.A..  She is 30
     years old.
    

MARY A. NELSON, Vice President and Assistant Treasurer.  Vice President of
     the Distributor and Funds Distributor, Inc., and an officer of other
     investment companies advised or administered by the Manager.  From
     September 1989 to July 1994, she was an Assistant Vice President and
     Client Manager for The Boston Company, Inc.  She is 33 years old.
   

GEORGE A. RIO, Vice President and Assistant Treasurer.  Executive Vice
     President, Client Service Director of Funds Distributor, Inc., and an
     officer of other investment companies advised or administered by the
     Manager.  From June 1995 to March 1998, he was Senior Vice President
     and Senior Key Account Manager for Putnam Mutual Funds. From May 1994
     to June 1995, he was Director of Business Development for First Data
     Corporation.  From September 1983 to May 1994, he was Senior Vice
     President & Manager of Client Services and Director of Internal Audit
     at The Boston Company.  He is 43 years old.
    

JOSEPH F. TOWER, III, Vice President and Assistant Treasurer.  Senior Vice
     President, Treasurer, Chief Financial Officer and a director of the
     Distributor and Funds Distributor, Inc., and an officer of other
     investment companies advised or administered by the Manager.  From
     July 1988 to August 1994, he was employed by The Boston Company, Inc.
     where he held various management positions in the Corporate Finance
     and Treasury areas.  He is 35 years old.

DOUGLAS C. CONROY, Vice President and Assistant Secretary.  Assistant Vice
     President of Funds Distributor, Inc., and an officer of other
     investment companies advised or administered by the Manager.  From
     April 1993 to January 1995, he was a Senior Fund Accountant for
     Investors Bank & Trust Company.  From December 1991 to March 1993, he
     was employed as a Fund Accountant at The Boston Company, Inc.  He is
     28 years old.
   

CHRISTOPHER J. KELLEY, Vice President and Assistant Secretary.  Vice
     President and Senior Associate General Counsel of the Distributor and
     Funds Distributor, Inc., and an officer of other investment companies
     advised or administered by the Manager.  From April 1994 to July 1996,
     he was Assistant Counsel at Forum Financial Group.  From October 1992
     to March 1994, he was employed by Putnam Investments in legal and
     compliance capacities.  He is 33 years old.
    
   
KATHLEEN K. MORRISEY, Vice President and Assistant Secretary.  Manager of
     Treasury Services Administration of Funds Distributor, Inc., and an
     officer of other investment companies advised or administered by the
     Manager.  From July 1994 to November 1995, she was a Fund Accountant
     for Investors Bank & Trust Company.  She is 25 years old.
    
   
ELBA VASQUEZ, Vice President and Assistant Secretary.  Assistant Vice
     President of Funds Distributor, Inc., and an officer of other
     investment companies advised or administered by the Manager.  From
     March 1990 to May 1996, she was employed by U.S. Trust Company of New
     York, where she held various sales and marketing positions.  She is 36
     years old.
    

     The address of each officer of the Fund is 200 Park Avenue, New York,
New York 10166.
   

     The Fund's Board members and officers, as a group, owned less than 1%
of the Fund's outstanding shares as of July 1, 1998.
    
   
     The following shareholders are known by the Fund to own of record 5%
or more of the Fund's shares of beneficial interest outstanding on July 1,
1998:  (1) University of Texas at Austin UT Austin, P.O. Box 7159, Austin,
TX 78713-7159 (14.10%);  (2) Board of Regents of the University of Texas
System Long Term Fund Active Reserve ULTF2061002, 1 Cabot Road, Medford, MA
02155-5141 (12.58%);  (3) Board of Regents of the University of Texas
System SITF UTSF 9600002, 1 Cabot Road, Medford MA 02155-5141 (12.39%); 4)
University of Texas System Administration UT System Administration, 201 W.
7th Street, Austin, TX 78701-2902 (11.43%);  (5) University of Texas
Medical Branch at Galveston    UT MB Galveston, 301 University Boulevard,
Galveston, TX 77555-0907 (9.53%);  (6) Board of Regents of the University
of Texas System PUF Active Reserve UPFF 2199002, 1 Cabot Road, Medford, MA
02155-5141 (9.49%);  (7) University of Texas MD Anderson Cancer Center UT
MDACC, 1515 Holcombe Boulevard, Houston, TX 77030-4009 (8.46%); (8) Comeria
Bank, Attn. Mutual Fund Operations, P.O. Box 650282, Dallas, TX 75265-0282
(8.05%).
    


                      MANAGEMENT AGREEMENT

     The following information supplements and should be read in
conjunction with the section in the Fund's Prospectus entitled "Management
of the Fund."

     The Manager provides management services pursuant to the Management
Agreement (the "Agreement") dated May 21, 1997, with the Fund, which is
subject to annual approval by (i) the Fund's Board or (ii) vote of a
majority (as defined in the 1940 Act) of the outstanding voting securities
of the Fund, provided that in either event the continuance also is
approved by a majority of the Board members who are not "interested
persons" (as defined in the 1940 Act) of the Fund or the Manager, by vote
cast in person at a meeting called for the purpose of voting on such
approval.  The Agreement is terminable without penalty on 60 days' notice
by the Fund's Board or by vote of the holders of a majority of the Fund's
shares or, on not less than 90 days' notice, by the Manager.  The
Agreement will terminate automatically in the event of its assignment (as
defined in the 1940 Act).
   

     The following persons are officers and/or directors of the Manager:
W. Keith Smith, Chairman of the Board; Christopher M. Condron, President,
Chief Executive Officer, Chief Operating Officer and a director; Stephen
E. Canter, Vice Chairman, Chief Investment Officer and a director;
Lawrence S. Kash, Vice Chairman--Distribution and a director; Ronald P.
O'Hanley III, Vice Chairman; William T. Sandalls, Jr., Senior Vice
President and Chief Financial Officer; Mark N. Jacobs, Vice President,
General Counsel and Secretary; Patrice M. Kozlowski, Vice President--
Corporate Communications; Mary Beth Leibig, Vice President--Human
Resources; Andrew S. Wasser, Vice President--Information Systems; William
V. Healey, Assistant Secretary; and Mandell L. Berman, Burton C. Borgelt,
Frank V. Cahouet and Richard F. Syron, directors.
    

     The Manager manages the Fund's portfolio of investments in accordance
with the stated policies of the Fund, subject to the approval of the
Fund's Board.  The Manager is responsible for investment decisions, and
provides the Fund with portfolio managers who are authorized by the Board
to execute purchases and sales of securities.  The Fund's portfolio
managers are Bernard W. Kiernan, Jr., Patricia A. Larkin and Thomas
Riordan.  The Manager also maintains a research department with a
professional staff of securities analysts who provide research services
for the Fund and for other funds advised by the Manager.

     The Manager maintains office facilities on behalf of the Fund and
furnishes statistical and research data, clerical help, accounting, data
processing, bookkeeping and internal auditing and certain other required
services to the Fund.  The Manager also may make such advertising and
promotional expenditures, using its own resources, as it from time to time
deems appropriate.

     Expenses.  All expenses incurred in the operation of the Fund are
borne by the Manager, except the management fee, taxes, interest,
brokerage fees and commissions, if any, fees and expenses of non-
interested Board members, fees and expenses of independent counsel to the
Fund and to the non-interested Board members, and any extraordinary
expenses.
   

     As compensation for Manager's services, the Fund has agreed to pay
the Manager a monthly fee at the annual rate of .10 of 1% of the value of
the Fund's average daily net assets. All fees and expenses are accrued
daily and deducted before declaration of dividends to shareholders.  The
Manager has agreed to reduce its management fee in an amount equal to the
accrued fees and expenses of the non-interested Board members, and the
fees and expenses of independent counsel to the Fund and to the non-
interested Board members.  For the period June 11, 1997 (commencement of
operations) through March 31, 1998, the management fee paid to the Manager
amounted to $853,116.
    

     The aggregate of the fees payable to the Manager is not subject to
reduction as the value of the Fund's net assets increases.


                       HOW TO BUY SHARES

     The following information supplements and should be read in
conjunction with the section in the Fund's Prospectus entitled "How to Buy
Shares."

     The Distributor.  The Distributor serves as the Fund's distributor on
a best efforts basis pursuant to an agreement which is renewable annually.
The Distributor also acts as distributor for the other funds in the
Dreyfus Family of Funds and for certain other investment companies.

     Using Federal Funds.  Dreyfus Transfer, Inc., the Fund's transfer and
dividend disbursing agent (the "Transfer Agent"), or the Fund may attempt
to notify the investor upon receipt of checks drawn on banks that are not
members of the Federal Reserve System as to the possible delay in
conversion into Federal Funds and may attempt to arrange for a better
means of transmitting the money.


                      HOW TO REDEEM SHARES

     The following information supplements and should be read in
conjunction with the section in the Fund's Prospectus entitled "How to
Redeem Shares."
   

     Redemption by Wire or Telephone.  By using this procedure, the
investor authorizes the Transfer Agent to act on wire or telephone
redemption instructions from any person representing himself or herself to
be an authorized representative of the investor, and reasonably believed
by the Transfer Agent to be genuine.  Ordinarily, the Fund will initiate
payment for shares redeemed pursuant to this procedure on the same
business day if Dreyfus Institutional Services Division receives the
redemption request in proper form in New York by 5:00 p.m., New York time;
otherwise the Fund will initiate payment on the next business day.
Redemption proceeds will be transferred by Federal Reserve wire only to a
bank that is a member of the Federal Reserve System.
    

     Investors with access to telegraphic equipment may wire redemption
requests to the Transfer Agent by employing the following transmittal code
which may be used for domestic or overseas transmission:
                                   Transfer Agent's
     Transmittal Code                   Answer Back Sign
         144295                         144295 TSSG PREP

     Investors who do not have direct access to telegraphic equipment may
have the wire transmitted by contacting a TRT Cables operator at 1-800-654-
7171, toll free.  Investors should advise the operator that the above
transmittal code must be used and should inform the operator of the
Transfer Agent's answer back sign.

     Redemption Commitment.  The Fund has committed itself to pay in cash
all redemption requests by any shareholders of record, limited in amount
during any 90-day period to the lesser of $250,000 or 1% of the value of
the Fund's net assets at the beginning of such period. Such commitment is
irrevocable without the prior approval of the Securities and Exchange
Commission.  In the case of requests for redemption in excess of such
amount, the Fund's Board reserves the right to make payments in whole or
in part in securities or other assets of the Fund in case of an emergency
or any time a cash distribution would impair the liquidity of the Fund to
the detriment of the existing shareholders.  In such event, the securities
would be valued in the same manner as the Fund's portfolio is valued. If
the recipient sold such securities, brokerage charges might be incurred.

     Suspension of Redemptions.  The right of redemption may be suspended
or the date of payment postponed (a) during any period when the New York
Stock Exchange is closed (other than customary weekend and holiday
closings), (b) when trading in the markets the Fund ordinarily utilizes is
restricted, or when an emergency exists as determined by the Securities
and Exchange Commission so that disposal of the Fund's investments or
determination of its net asset value is not reasonably practicable, or (c)
for such other periods as the Securities and Exchange Commission by order
may permit to protect the Fund's investors.


                DETERMINATION OF NET ASSET VALUE

     The following information supplements and should be read in
conjunction with the section in the Fund's Prospectus entitled "How to Buy
Shares."

     Amortized Cost Pricing.  The valuation of the Fund's portfolio
securities is based upon their amortized cost which does not take into
account unrealized capital gains or losses.  This involves valuing an
instrument at its cost and thereafter assuming a constant amortization to
maturity of any discount or premium, regardless of the impact of
fluctuating interest rates on the market value of the instrument.  While
this method provides certainty in valuation, it may result in periods
during which value, as determined by amortized cost, is higher or lower
than the price the Fund would receive if it sold the instrument.

     The Fund's Board has established, as a particular responsibility
within the overall duty of care owed to the Fund's investors, procedures
reasonably designed to stabilize the Fund's price per share as computed
for the purpose of purchases and redemptions at $1.00.  Such procedures
include review of the Fund's portfolio holdings by the Fund's Board, at
such intervals as it deems appropriate, to determine whether the Fund's
net asset value per share calculated by using available market quotations
or market equivalents deviates from $1.00 per share based on amortized
cost.  In such review, investments for which market quotations are readily
available will be valued at the most recent bid price or yield equivalent
for such securities or for securities of comparable maturity, quality and
type, as obtained from one or more of the major market makers for the
securities to be valued.  Other investments and assets will be valued at
fair value as determined in good faith by the Fund's Board.

     The extent of any deviation between the Fund's net asset value based
upon available market quotations or market equivalents and $1.00 per share
based on amortized cost will be examined by the Fund's Board.  If such
deviation exceeds 1/2 of 1%, the Fund's Board will consider promptly what
action, if any, will be initiated.  In the event the Fund's Board
determines that a deviation exists which may result in material dilution
or other unfair results to investors or existing shareholders, it has
agreed to take such corrective action as it regards as necessary and
appropriate including:  selling portfolio instruments prior to maturity to
realize capital gains or losses or to shorten average portfolio maturity;
withholding dividends or paying distributions from capital or capital
gains; redeeming shares in kind; or establishing a net asset value by
using available market quotations or market equivalents.
   

     New York Stock Exchange Closings.  The following are the holidays (as
observed) on which the New York Stock Exchange currently is closed:  New
Year's Day, Martin Luther King Jr. Day, Presidents' Day, Good Friday,
Memorial Day, Independence Day, Labor Day, Thanksgiving and Christmas.
    


               DIVIDENDS, DISTRIBUTIONS AND TAXES

     The following information supplements and should be read in
conjunction with the section in the Fund's Prospectus entitled "Dividends,
Distributions and Taxes."

     Ordinarily, gains and losses realized from portfolio transactions
will be treated as capital gain or loss.  However, all or a portion of any
gain realized from the sale or other disposition of certain market
discount bonds will be treated as ordinary income under Section 1276 of
the Internal Revenue Code of 1986, as amended.


                     PORTFOLIO TRANSACTIONS

     Portfolio securities ordinarily are purchased directly from the
issuer or from an underwriter or a market maker for the securities.
Usually no brokerage commissions will be paid by the Fund for such
purchases.  Purchases from underwriters of portfolio securities may
include a concession paid by the issuer to the underwriter and the
purchase price paid to, and sales price received from, market makers for
the securities may reflect the spread between the bid and asked price.

     Transactions will be allocated to various dealers by the Fund's
portfolio managers in their best judgment.  The primary consideration will
be prompt and effective execution of orders at the most favorable price.
Subject to that primary consideration, dealers may be selected for
research, statistical or other services to enable the Manager to
supplement its own research and analysis with the views and information of
other securities firms and may be selected based upon their sales of Fund
shares.

     Research services furnished by brokers through which the Fund will
effect securities transactions may be used by the Manager in advising
other funds it advises and, conversely, research services furnished to the
Manager by brokers in connection with other funds the Manager advises may
be used by the Manager in advising the Fund.  Although it is not possible
to place a dollar value on these services, it is the opinion of the
Manager that the receipt and study of such services should not reduce the
overall expenses of its research department.


                       YIELD INFORMATION

     The following information supplements and should be read in
conjunction with the section in the Prospectus entitled "Yield
Information."
   

     For the seven-day period ended March 31, 1998, the Funds' yield and
effective yield were 5.59% and 5.75%, respectively.
    

     Yield is computed in accordance with a standardized method which
involves determining the net change in the value of a hypothetical
pre-existing fund account having a balance of one share at the beginning
of a seven calendar day period for which yield is to be quoted, dividing
the net change by the value of the account at the beginning of the period
to obtain the base period return, and annualizing the results (i.e.,
multiplying the base period return by 365/7).  The net change in the value
of the account reflects the value of additional shares purchased with
dividends declared on the original share and any such additional shares
and fees that may be charged to the shareholder's account, in proportion
to the length of the base period and the fund's average account size, but
does not include realized gains and losses or unrealized appreciation and
depreciation.  Effective yield is computed by adding 1 to the base period
return (calculated as described above), raising that sum to a power equal
to 365 divided by 7, and subtracting 1 from the result.

     Yields will fluctuate and are not necessarily representative of
future results.  Each investor should remember that yield is a function of
the type and quality of the instruments in the portfolio, portfolio
maturity and operating expenses.  An investor's principal in the Fund is
not guaranteed.  See "Determination of Net Asset Value" for a discussion
of the manner in which the Fund's price per share is determined.
   

     In early 1974, the Manager commenced offering the first money market
fund to be widely offered on a retail basis, Dreyfus Liquid Assets, Inc.
Money market mutual funds have subsequently grown into a trillion dollar
industry.  Currently, the Manager manages approximately $56 billion in
money market fund assets, including approximately $29 billion in money
market funds designed for institutional investors.
    


                   INFORMATION ABOUT THE FUND

     The following information supplements and should be read in
conjunction with the section in the Fund's Prospectus entitled "General
Information."

     A Fund share has one vote and, when issued and paid for in accordance
with the terms of the offering, is fully paid and nonassessable.  Fund
shares are of one class and have equal rights as to dividends and in
liquidation.  Shares have no preemptive, subscription or conversion
rights, and are freely transferable.
   

     Under Massachusetts law, shareholders could, under certain
circumstances, be held liable for the obligations of the Fund.  However, the
Fund's Trust Agreement disclaims shareholder liability for acts or
obligations of the Fund and requires that notice of such disclaimer be given
in each agreement, obligation or instrument entered into or executed by the
Fund or its Trustees.  The Trust Agreement provides for indemnification from
the Fund's property for all losses and expenses of any shareholder held
personally liable for the obligations of the Fund.  Thus, the risk of a
shareholder's incurring financial loss on account of shareholder liability
is limited to circumstances in which the Fund itself would be unable to meet
its obligations, a possibility which management believes is remote.  Upon
payment of any liability incurred by a Fund organized as a Massachusetts
business trust, the shareholder paying such liability will be entitled to
reimbursement from the general assets of the Fund.  The Fund intends to
conduct its operations in such a way so as to avoid, as far as possible,
ultimate liability of its shareholders for liabilities of the Fund.
    

     The Fund will send annual and semi-annual financial statements to all
its shareholders.


   TRANSFER AND DIVIDEND DISBURSING AGENT, CUSTODIAN, COUNSEL
                    AND INDEPENDENT AUDITORS

     Dreyfus Transfer, Inc., a wholly-owned subsidiary of the Manager,
P.O. Box 9671, Providence, Rhode Island  02940-9671, is the Fund's
transfer and dividend disbursing agent.  Under a transfer agency agreement
with the Fund, the Transfer Agent will arrange for the maintenance of
shareholder account records for the Fund, the handling of certain
communications between shareholders and the Fund and the payment of
dividends and distributions payable by the Fund.  For these services, the
Transfer Agent will receive a monthly fee computed on the basis of the
number of shareholder accounts it maintains for the Fund during the month,
and is reimbursed for certain out-of-pocket expenses.

     The Bank of New York, 90 Washington Street, New York, New York 10286,
acts as custodian of the Fund's investments.

     Stroock & Stroock & Lavan LLP, 180 Maiden Lane, New York, New York
10038-4982, as counsel for the Fund, has rendered its opinion as to
certain legal matters regarding the due authorization and valid issuance
of the shares being sold pursuant to the Fund's Prospectus.

     Ernst & Young LLP, 787 Seventh Avenue, New York, New York 10019,
independent auditors, have been selected as auditors of the Fund.

   

           FINANCIAL STATEMENTS AND REPORT OF INDEPENDENT AUDITORS

     The Fund's Annual Report to Shareholders for the fiscal year ended
March 31, 1998 is a separate document supplied with this Statement of
Additional Information, and the financial statement, accompanying notes and
report of independent auditors appearing therein are incorporated by
reference into this Statement of Additional Information.
    

                            APPENDIX
   

     Descriptions of the highest commercial paper, bond and other short-
and long-term rating categories assigned by Standard & Poor's Ratings
Group ("S&P"), Moody's Investors Service, Inc. ("Moody's"), Fitch IBCA,
Inc. ("Fitch"), Duff & Phelps Credit Rating Co. ("Duff") and Thomson
BankWatch, Inc. ("BankWatch"):
    

Commercial Paper Ratings and Short-Term Ratings

     The designation A-1 by S&P indicates that the degree of safety
regarding timely payment is either overwhelming or very strong.  Those
issues determined to possess overwhelming safety characteristics are
denoted with a plus sign (+) designation.

     The rating Prime-1 (P-1) is the highest commercial paper rating
assigned by Moody's.  Issuers of P-1 paper must have a superior capacity
for repayment of short-term promissory obligations, and ordinarily will be
evidenced by leading market positions in well established industries, high
rates of return on funds employed, conservative capitalization structures
with moderate reliance on debt and ample asset protection, broad margins
in earnings coverage of fixed financial charges and high internal cash
generation, and well established access to a range of financial markets
and assured sources of alternate liquidity.

     The rating Fitch-1 (Highest Grade) is the highest commercial paper
rating assigned by Fitch.  Paper rated Fitch-1 is regarded as having the
strongest degree of assurance for timely payment.

     The rating Duff-1 is the highest commercial paper rating assigned by
Duff.  Paper rated Duff-1 is regarded as having very high certainty of
timely payment with excellent liquidity factors which are supported by
ample asset protection.  Risk factors are minor.
   
    


     The rating TBW-1 is the highest short-term obligation rating assigned
by BankWatch.  Obligations rated TBW-1 are regarded as having the
strongest capacity for timely repayment.

Bond Ratings and Long-Term Ratings

     Bonds rated AAA are considered by S&P to be the highest grade
obligation and possess an extremely strong capacity to pay principal and
interest.

     Bonds rated Aaa are judged by Moody's to be of the best quality.
Bonds rated Aa by Moody's are judged by Moody's to be of high quality by
all standards and, together with the Aaa group, they comprise what are
generally known as high-grade bonds.

     Bonds rated AAA by Fitch are judged by Fitch to be strictly high
grade, broadly marketable and suitable for investment by trustees and
fiduciary institutions and liable to but slight market fluctuation other
than through changes in the money rate.  The prime feature of an AAA bond
is a showing of earnings several times or many times interest
requirements, with such stability of applicable earnings that safety is
beyond reasonable question whatever changes occur in conditions.

     Bonds rated AAA by Duff are considered to be of the highest credit
quality.  The risk factors are negligible, being only slightly more than
U.S. Treasury debt.

     Obligations rated AAA by IBCA have the lowest expectation of
investment risk.  Capacity for timely repayment of principal and interest
is substantial, such that adverse changes in business, economic or
financial conditions are unlikely to increase investment risk
significantly.  Obligations rated AA by IBCA have a very low expectation
of investment risk.  Capacity for timely repayment of principal and
interest is substantial.  Adverse changes in business, economic or
financial conditions may increase investment risk albeit not very
significantly.

     IBCA also assigns a rating to certain international and U.S. banks.
An IBCA bank rating represents IBCA's current assessment of the strength
of the bank and whether such bank would receive support should it
experience difficulties.  In its assessment of a bank, IBCA uses a dual
rating system comprised of Legal Ratings and Individual Ratings.  In
addition, IBCA assigns banks long- and short-term ratings as used in the
corporate ratings discussed above.  Legal Ratings, which range in
gradation from 1 through 5, address the question of whether the bank would
receive support provided by central banks or shareholders if it
experienced difficulties, and such ratings are considered by IBCA to be a
prime factor in its assessment of credit risk.  Individual Ratings, which
range in gradations from A through E, represent IBCA's assessment of a
bank's economic merits and address the question of how the bank would be
viewed if it were entirely independent and could not rely on support from
state authorities or its owners.

     In addition to ratings of short-term obligations, BankWatch assigns a
rating to each issuer it rates, in gradations of A through E.  BankWatch
examines all segments of the organization including, where applicable, the
holding company, member banks or associations, and other subsidiaries.  In
those instances where financial disclosure is incomplete or untimely, a
qualified rating (QR) is assigned to the institution.  BankWatch also
assigns, in the case of foreign banks, a country rating which represents
an assessment of the overall political and economic stability of the
country in which the bank is domiciled.

              DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND


                          PART C. OTHER INFORMATION
                          _________________________

Item 24.  Financial Statements and Exhibits. - List
_______   _________________________________________

(a)  Financial Statements:

          Included in Part A of the Registration Statement:
   

          Condensed Financial Information for the period June 11, 1997
          (commencement of operations) through March 31, 1998.
    

          Included in Part B (by reference) of the Registration Statement:
   

          Statement of Investments--March 31, 1998.*
    
   
          Statement of Assets and Liabilities--March 31, 1998.*
    
   
          Statement of Operations for the period from June 11, 1997
          (commencement of operations) to March 31, 1998.*
    
   
          Statement of Changes in Net Assets for the period from June 11,
          1997 (commencement of operations) to March 31, 1998.*
    

          Notes to Financial Statements.*
   

          Report of Ernst & Young LLP, Independent Auditors, dated April 30,
          1998.*
    

          ________________________________
   

          *Items are incorporated by reference to the Registrant's Annual
           Report on Form N-30D, dated March 31, 1998.
    

All Schedules and other financial statement information, for which provision
is made in the applicable accounting regulations of the Securities and
Exchange Commission, are either omitted because they are not required under
the related instructions, they are inapplicable, or the required information
is presented in the financial statements or notes thereto which are included
in Part B of the Registration Statement.

Item 24.  Financial Statements and Exhibits. - List (Continued)

(b)                 Exhibits:

     (1)  Registrant's Amended and Restated Agreement and Declaration of
          Trust is incorporated by reference to Exhibit (1) of Pre-Effective
          Amendment No. 1 to the Registration Statement on Form N-1A, filed
          on June 5, 1997 ("Pre-Effective Amendment No. 1").

     (2)  Registrant's By-Laws, as amended, are incorporated by reference to
          Exhibit (2) of Pre-Effective Amendment No. 1 to the Registration
          Statement on Form N-1A, filed on June 5, 1997.

     (5)  Management Agreement is incorporated by reference to Exhibit (5)
          of Pre-Effective Amendment No. 1 to the Registration Statement on
          Form N-1A, filed on June 5, 1997.

     (6)  Distribution Agreement is incorporated by reference to Exhibit (6)
          of the Pre-Effective Amendment No. 1 to the Registration Statement
          on Form N-1A, filed on June 5, 1997.

     (8)  Custody Agreement is incorporated by reference to Exhibit (8) of
          Pre-Effective Amendment No. 1 to the Registration Statement on
          Form N-1A, filed on June 5, 1997.

     (10) Opinion and Consent of Registrant's Counsel is incorporated by
          reference to Exhibit (10) of Pre-Effective Amendment No. 1 to the
          Registration Statement on Form N-1A, filed on June 5, 1997.

     (11) Consent of Independent Auditors.
   
    


     (17) Financial Data Schedule.

OTHER EXHIBITS
   

     (a)  Power of Attorney.
    
   
     (b)  Certificate of Assistant Secretary.
    


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

          Not Applicable

Item 26.  Number of Holders of Securities.
_______   ________________________________

   
            (1)                                   (2)

          Title of Class                    Number of Record Holders
          ______________                    as of July 1, 1998

          Shares of Beneficial
          Interest                                28
          (Par value $.001/Share)
    

Item 27.       Indemnification
_______     _______________

            Reference is made to Article EIGHTH of the Registrant's Amended
and Restated Declaration of Trust, filed as Exhibit 1 hereto.  The
application of these provisions is limited by Article 10 of the Registrant's
By-Laws, filed as Exhibit 2 hereto, and by the following undertaking set
forth in the rules promulgated by the Securities and Exchange Commission:

                 Insofar as indemnification for liabilities arising under
            the Securities Act of 1933 may be permitted to trustees,
            officers and controlling persons of the registrant pursuant to
            the foregoing provisions, 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 such 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 trustee, 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 such Act and will be governed by the final
            adjudication of such issue.

            Reference also is made to the Distribution Agreement, attached
            as Exhibit (6) of Pre-Effective Amendment No. 1 to the
            Registration Statement on Form N-1A, filed on June 5, 1997.
Item 28.  Business and Other Connections of Investment Adviser (continued)
________  ________________________________________________________________

          Officers and Directors of Investment Adviser
          ____________________________________________

Name and Position
with Dreyfus                 Other Businesses
_________________            ________________

MANDELL L. BERMAN            Real estate consultant and private investor
Director                          29100 Northwestern Highway, Suite 370
                                  Southfield, Michigan 48034;
                             Past Chairman of the Board of Trustees:
                                  Skillman Foundation;
                             Member of The Board of Vintners Intl.

BURTON C. BORGELT            Chairman Emeritus of the Board and
Director                     Past Chairman, Chief Executive Officer and
                             Director:
                                  Dentsply International, Inc.
                                  570 West College Avenue
                                  York, Pennsylvania 17405;
                             Director:
                                  DeVlieg-Bullard, Inc.
                                  1 Gorham Island
                                  Westport, Connecticut 06880
                                  Mellon Bank Corporation***;
                                  Mellon Bank, N.A.***

FRANK V. CAHOUET             Chairman of the Board, President and
Director                     Chief Executive Officer:
                                  Mellon Bank Corporation***;
                                  Mellon Bank, N.A.***;
                             Director:
                                  Avery Dennison Corporation
                                  150 North Orange Grove Boulevard
                                  Pasadena, California 91103;
                                  Saint-Gobain Corporation
                                  750 East Swedesford Road
                                  Valley Forge, Pennsylvania 19482;
                                  Teledyne, Inc.
                                  1901 Avenue of the Stars
                                  Los Angeles, California 90067

W. KEITH SMITH               Chairman and Chief Executive Officer:
Chairman of the Board             The Boston Company****;
                             Vice Chairman of the Board:
                                  Mellon Bank Corporation***;
                                  Mellon Bank, N.A.***;
                             Director:
                                  Dentsply International, Inc.
                                  570 West College Avenue
                                  York, Pennsylvania 17405

CHRISTOPHER M. CONDRON       Vice Chairman:
President, Chief                  Mellon Bank Corporation***;
Executive Officer,                The Boston Company****;
Chief Operating              Deputy Director:
Officer and a                     Mellon Trust***;
Director                     Chief Executive Officer:
                                  The Boston Company Asset Management,
                                  Inc.****;
                             President:
                                  Boston Safe Deposit and Trust Company****

STEPHEN E. CANTER            Director:
Vice Chairman and                 The Dreyfus Trust Company++;
Chief Investment Officer,    Formerly, Chairman and Chief Executive Officer:
and a Director                    Kleinwort Benson Investment Management
                                       Americas Inc.*

LAWRENCE S. KASH             Chairman, President and Chief
Vice Chairman-Distribution   Executive Officer:
and a Director                    The Boston Company Advisors, Inc.
                                  53 State Street
                                  Exchange Place
                                  Boston, Massachusetts 02109;
                             Executive Vice President and Director:
                                  Dreyfus Service Organization, Inc.**;
                             Director:
                                  Dreyfus America Fund+++;
                                  The Dreyfus Consumer Credit Corporation*;
                                  The Dreyfus Trust Company++;
                                  Dreyfus Service Corporation*;
                             President:
                                  The Boston Company****;
                                  Laurel Capital Advisors***;
                                  Boston Group Holdings, Inc.;
                             Executive Vice President:
                                  Mellon Bank, N.A.***;
                                  Boston Safe Deposit and Trust
                                  Company****

RICHARD F. SYRON             Chairman of the Board and
Director                     Chief Executive Officer:
                                  American Stock Exchange
                                  86 Trinity Place
                                  New York, New York 10006;
                             Director:
                                  John Hancock Mutual Life Insurance Company
                                  John Hancock Place, Box 111
                                  Boston, Massachusetts 02117;
                                  Thermo Electron Corporation
                                  81 Wyman Street, Box 9046
                                  Waltham, Massachusetts 02254-9046;
                                  American Business Conference
                                  1730 K Street, NW, Suite 120
                                  Washington, D.C. 20006;
                             Trustee:
                                  Boston College - Board of Trustees
                                  140 Commonwealth Ave.
                                  Chestnut Hill, Massachusetts 02167-3934

J. DAVID OFFICER             Vice Chairman:
Vice Chairman                     The Dreyfus Corporation*;
and a Director               Director:
                                  Dreyfus Financial Services Corporation*****;
                                  Dreyfus Investment Services Corporation*****;
                                  Mellon Trust of Florida
                                  2875 Northeast 191st Street
                                  North Miami Beach, Florida 33180;
                                  Mellon Preferred Capital Corporation****;
                                  Boston Group Holdings, Inc.****;
                                  Mellon Trust of New York
                                  1301 Avenue of the Americas - 41st Floor
                                  New York, New York 10019;
                                  Mellon Trust of California
                                  400 South Hope Street
                                  Los Angeles, California 90071-2806;
                             Executive Vice President:
                                  Mellon Bank, N.A.***;
                             Vice Chairman and Director:
                                  The Boston Company, Inc.****;
                             President and Director:
                                  RECO, Inc.****;
                                  The Boston Company Financial Services,
                                  Inc.****;
                                  Boston Safe Deposit and Trust Company****;

RONALD P. O'HANLEY III       Vice Chairman:
Vice Chairman                     The Dreyfus Corporation*;
and a Director               Director:
                                  The Boston Company Asset Management, LLC****;
                                  TBCAM Holding, Inc.****;
                                  Franklin Portfolio Holdings, Inc.
                                  Two International Place - 22nd Floor
                                  Boston, Massachusetts 02110;
                                  Mellon Capital Management Corporation
                                  595 Market Street, Suite #3000
                                  San Francisco, California 94105;
                                  Certus Asset Advisors Corporation
                                  One Bush Street, Suite 450
                                  San Francisco, California 94104;
                                  Mellon-France Corporation***;
                             Chairman and Director:
                                  Boston Safe Advisors, Inc.****;
                             Partner Representative:
                                  Pareto Partners
                                  271 Regent Street
                                  London, England W1R 8PP;
                             Chairman and Trustee:
                                  Mellon Bond Associates, LLP***;
                                  Mellon Equity Associates, LLP***;
                             Trustee:
                                  Laurel Capital Advisors, LLP***;
                             Chairman, President and Chief Executive Officer:
                                  Mellon Global Investing Corp.***;
                             Partner:
                                  McKinsey & Company, Inc.
                                  Boston, Massachusetts

WILLIAM T. SANDALLS, JR.     Director:
Senior Vice President and         Dreyfus Partnership Management, Inc.*;
Chief Financial Officer           Seven Six Seven Agency, Inc.*;
                             Chairman and Director:
                                  Dreyfus Transfer, Inc.
                                  One American Express Plaza
                                  Providence, Rhode Island 02903;
                             President and Director:
                                  Lion Management, Inc.*;
                             Executive Vice President and Director:
                                  Dreyfus Service Organization, Inc.*;
                             Vice President, Chief Financial Officer and
                             Director:
                                  Dreyfus America Fund+++;
                             Vice President and Director:
                                  The Dreyfus Consumer Credit Corporation*;
                                  The Truepenny Corporation*;
                             Treasurer, Financial Officer and Director:
                                  The Dreyfus Trust Company++;
                             Treasurer and Director:
                                  Dreyfus Management, Inc.*;
                                  Dreyfus Service Corporation*;
                             Formerly, President and Director:
                                  Sandalls & Co., Inc.

MARK N. JACOBS               Vice President, Secretary and Director:
Vice President,                   Lion Management, Inc.*;
General Counsel              Secretary:
and Secretary                     The Dreyfus Consumer Credit Corporation*;
                                  Dreyfus Management, Inc.*;
                             Assistant Secretary:
                                  Dreyfus Service Organization, Inc.**;
                                  Major Trading Corporation*;
                                  The Truepenny Corporation*

PATRICE M. KOZLOWSKI         None
Vice President-
Corporate Communications

MARY BETH LEIBIG             None
Vice President-
Human Resources

JEFFREY N. NACHMAN           President and Director:
Vice President-Mutual             Dreyfus Transfer, Inc.
Fund Accounting                   One American Express Plaza
                                  Providence, Rhode Island 02903

ANDREW S. WASSER             Vice President:
Vice President-Information        Mellon Bank Corporation***
Services

WILLIAM V. HEALEY            President:
Assistant Secretary               The Truepenny Corporation*;
                             Vice President and Director:
                                  The Dreyfus Consumer Credit Corporation*;
                             Secretary and Director:
                                  Dreyfus Partnership Management Inc.*;
                             Director:
                                  The Dreyfus Trust Company++;
                             Assistant Secretary:
                                  Dreyfus Service Corporation*;
                                  Dreyfus Investment Advisors, Inc.*;
                             Assistant Clerk:
                                  Dreyfus Insurance Agency of Massachusetts,
                                  Inc.+++++

______________________________________

*      The address of the business so indicated is 200 Park Avenue, New York,
       New York 10166.
**     The address of the business so indicated is 131 Second Street,
       Lewes, Delaware 19958.
***    The address of the business so indicated is One Mellon Bank Center,
       Pittsburgh, Pennsylvania 15258.
****   The address of the business so indicated is One Boston Place,
       Boston, Massachusetts 02108.
*****  The address of the business so indicated is Union Trust Building,
       501 Grant Street, Room 179, Pittsburgh, Pennsylvania 15259;
+      The address of the business so indicated is Atrium Building,
       80 Route 4 East, Paramus, New Jersey 07652.
++     The address of the business so indicated is 144 Glenn Curtiss Boulevard,
       Uniondale, New York 11556-0144.
+++    The address of the business so indicated is 69, Route `d'Esch, L-
       1470 Luxembourg.
++++   The address of the business so indicated is 69, Route `d'Esch, L-
       2953 Luxembourg.
+++++  The address of the business so indicated is 53 State Street, Boston,
       Massachusetts 02103.



Item 29.  Principal Underwriters
________  ______________________

     (a)  Other investment companies for which Registrant's principal
underwriter (exclusive distributor) acts as principal underwriter or
exclusive distributor:

1)        Comstock Partners Funds, Inc.
2)        Dreyfus A Bonds Plus, Inc.
3)        Dreyfus Appreciation Fund, Inc.
4)        Dreyfus Asset Allocation Fund, Inc.
5)        Dreyfus Balanced Fund, Inc.
6)        Dreyfus BASIC GNMA Fund
7)        Dreyfus BASIC Money Market Fund, Inc.
8)        Dreyfus BASIC Municipal Fund, Inc.
9)        Dreyfus BASIC U.S. Government Money Market Fund
10)       Dreyfus California Intermediate Municipal Bond Fund
11)       Dreyfus California Tax Exempt Bond Fund, Inc.
12)       Dreyfus California Tax Exempt Money Market Fund
13)       Dreyfus Cash Management
14)       Dreyfus Cash Management Plus, Inc.
15)       Dreyfus Connecticut Intermediate Municipal Bond Fund
16)       Dreyfus Connecticut Municipal Money Market Fund, Inc.
17)       Dreyfus Florida Intermediate Municipal Bond Fund
18)       Dreyfus Florida Municipal Money Market Fund
19)       The Dreyfus Fund Incorporated
20)       Dreyfus Global Bond Fund, Inc.
21)       Dreyfus Global Growth Fund
22)       Dreyfus GNMA Fund, Inc.
23)       Dreyfus Government Cash Management Funds
24)       Dreyfus Growth and Income Fund, Inc.
25)       Dreyfus Growth and Value Funds, Inc.
26)       Dreyfus Growth Opportunity Fund, Inc.
27)       Dreyfus Income Funds
28)       Dreyfus Index Funds, Inc.
29)       Dreyfus Institutional Money Market Fund
30)       Dreyfus Institutional Preferred Money Market Fund
31)       Dreyfus Institutional Short Term Treasury Fund
32)       Dreyfus Insured Municipal Bond Fund, Inc.
33)       Dreyfus Intermediate Municipal Bond Fund, Inc.
34)       Dreyfus International Funds, Inc.
35)       Dreyfus Investment Grade Bond Funds, Inc.
36)       Dreyfus Investment Portfolios
37)       The Dreyfus/Laurel Funds, Inc.
38)       The Dreyfus/Laurel Funds Trust
39)       The Dreyfus/Laurel Tax-Free Municipal Funds
40)       Dreyfus LifeTime Portfolios, Inc.
41)       Dreyfus Liquid Assets, Inc.
42)       Dreyfus Massachusetts Intermediate Municipal Bond Fund
43)       Dreyfus Massachusetts Municipal Money Market Fund
44)       Dreyfus Massachusetts Tax Exempt Bond Fund
45)       Dreyfus MidCap Index Fund
46)       Dreyfus Money Market Instruments, Inc.
47)       Dreyfus Municipal Bond Fund, Inc.
48)       Dreyfus Municipal Cash Management Plus
49)       Dreyfus Municipal Money Market Fund, Inc.
50)       Dreyfus New Jersey Intermediate Municipal Bond Fund
51)       Dreyfus New Jersey Municipal Bond Fund, Inc.
52)       Dreyfus New Jersey Municipal Money Market Fund, Inc.
53)       Dreyfus New Leaders Fund, Inc.
54)       Dreyfus New York Insured Tax Exempt Bond Fund
55)       Dreyfus New York Municipal Cash Management
56)       Dreyfus New York Tax Exempt Bond Fund, Inc.
57)       Dreyfus New York Tax Exempt Intermediate Bond Fund
58)       Dreyfus New York Tax Exempt Money Market Fund
59)       Dreyfus 100% U.S. Treasury Intermediate Term Fund
60)       Dreyfus 100% U.S. Treasury Long Term Fund
61)       Dreyfus 100% U.S. Treasury Money Market Fund
62)       Dreyfus 100% U.S. Treasury Short Term Fund
63)       Dreyfus Pennsylvania Intermediate Municipal Bond Fund
64)       Dreyfus Pennsylvania Municipal Money Market Fund
65)       Dreyfus Premier California Municipal Bond Fund
66)       Dreyfus Premier Equity Funds, Inc.
67)       Dreyfus Premier International Funds, Inc.
68)       Dreyfus Premier GNMA Fund
69)       Dreyfus Premier Worldwide Growth Fund, Inc.
70)       Dreyfus Premier Insured Municipal Bond Fund
71)       Dreyfus Premier Municipal Bond Fund
72)       Dreyfus Premier New York Municipal Bond Fund
73)       Dreyfus Premier State Municipal Bond Fund
74)       Dreyfus Premier Value Fund
75)       Dreyfus Short-Intermediate Government Fund
76)       Dreyfus Short-Intermediate Municipal Bond Fund
77)       The Dreyfus Socially Responsible Growth Fund, Inc.
78)       Dreyfus Stock Index Fund, Inc.
79)       Dreyfus Tax Exempt Cash Management
80)       The Dreyfus Third Century Fund, Inc.
81)       Dreyfus Treasury Cash Management
82)       Dreyfus Treasury Prime Cash Management
83)       Dreyfus Variable Investment Fund
84)       Dreyfus Worldwide Dollar Money Market Fund, Inc.
85)       General California Municipal Bond Fund, Inc.
86)       General California Municipal Money Market Fund
87)       General Government Securities Money Market Fund, Inc.
88)       General Money Market Fund, Inc.
89)       General Municipal Bond Fund, Inc.
90)       General Municipal Money Market Fund, Inc.
91)       General New York Municipal Bond Fund, Inc.
92)       General New York Municipal Money Market Fund

(b)
                                                       Positions and
Name and principal  Positions and offices with              offices with
business address         the Distributor                         Registrant
__________________  ___________________________             _____________

Marie E. Connolly+   Director, President, Chief              President and
                     Executive Officer and Compliance        Treasurer
                     Officer

Joseph F. Tower, III+ Director, Senior Vice President,       Vice President
                      Treasurer and Chief Financial Officer   and Assistant
                                                              Treasurer

Mary A. Nelson+       Vice President                         Vice President
                                                             and Assistant
                                                             Treasurer
   
    


Paul Prescott+        Vice President                         None

Jean M. O'Leary+      Assistant Secretary and                None
                      Assistant Clerk

John W. Gomez+        Director                              None

William J. Nutt+      Director                              None




________________________________
 +  Principal business address is 60 State Street, Boston, Massachusetts
    02109.
++  Principal business address is 200 Park Avenue, New York, New York
    10166.
Item 30.   Location of Accounts and Records
           ________________________________

          1.  First Data Investor Services Group, Inc.,
              a subsidiary of First Data Corporation
              P.O. Box 9671
              Providence, Rhode Island 02940-9671

           2.  The Bank of New York
               90 Washington Street
               New York, New York 10286

           3.  Dreyfus Transfer, Inc.
               P.O. Box 9671
               Providence, Rhode Island 02940-9671

           4.  The Dreyfus Corporation
               200 Park Avenue
               New York, New York 10166

Item 31.   Management Services
_______    ___________________

           Not Applicable

Item 32.   Undertakings
________   ____________

   

  (1)      To call a meeting of shareholders for the purpose of voting upon
           the question of removal of a Board member or Board members when
           requested in writing to do so by the holders of at least 10% of
           the Registrant's outstanding shares and in connection with such
           meeting to comply with the provisions of Section 16(c) of the
           Investment Company Act of 1940 relating to shareholder
           communications.

  (2)      To furnish each person to whom a prospectus is delivered with a
           copy of the Fund's latest Annual Report to Shareholders, upon
           request and without charge.
    

                                 SIGNATURES
                                 __________

     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all
of the requirements for effectiveness of this Amendment to the Registration
Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has
duly caused this Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New
York, and State of New York, on the 29th day of July, 1998.

              DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND


                      BY:     /s/Marie E. Connolly*
                        ____________________________
                        Marie E. Connolly, President

  Pursuant to the requirements of the Securities Act of 1933, this Amendment
to the Registration Statement has been signed below by the following persons
in the capacities and on the date indicated.

       Signatures                        Title                       Date
__________________________     ______________________________ __________

/s/Marie E. Connolly*          President (Principal Executive,
______________________________ Financial, and Accounting
Marie E. Connolly              Officer)                           07/29/98


/s/Joseph S. DiMartino*        Chairman of the Board              07/29/98
_______________________________
Joseph S. DiMartino


/s/Clifford L. Alexander, Jr.* Board Member                       07/29/98
_______________________________
Clifford L. Alexander, Jr.


/s/Lucy Wilson Benson*         Board Member                        07/29/98
_______________________________
Lucy Wilson Benson




*BY:
     /s/Elba Vasquez
     ______________
     Elba Vasquez
     Attorney-in-fact
                                EXHIBIT INDEX



Exhibits

          (11) Consent of Independent Auditors

          (17) Financial Data Schedule

Other Exhibits

          (a)  Power of Attorney

          (b)  Certificate of Assistant Secretary











                    CONSENT OF INDEPENDENT AUDITORS



We consent to the reference to our firm under the caption "Transfer and
Dividend Disbursing Agent, Custodian, Counsel and Independent Auditors" and
to the use of our report dated April 30, 1997,  which is incorporated by
reference, in this Registration Statement (Form N-1A No. 333-26513) of
Dreyfus Institutional Preferred Money Market Fund.



                                          ERNST & YOUNG LLP

New York, New York
July 27, 1998


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<ARTICLE> 6
<CIK> 0001038520
<NAME> DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND
<MULTIPLIER> 1000
       
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<PERIOD-TYPE>                   10-MOS
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-END>                               MAR-31-1998
<INVESTMENTS-AT-COST>                          1484472
<INVESTMENTS-AT-VALUE>                         1484472
<RECEIVABLES>                                    11791
<ASSETS-OTHER>                                     475
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 1496738
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<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          112
<TOTAL-LIABILITIES>                                112
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1496629
<SHARES-COMMON-STOCK>                          1496629
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            (3)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                   1496626
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                48983
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     853
<NET-INVESTMENT-INCOME>                          48130
<REALIZED-GAINS-CURRENT>                           (3)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                            48127
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (48130)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        5663122
<NUMBER-OF-SHARES-REDEEMED>                  (4214202)
<SHARES-REINVESTED>                              47609
<NET-CHANGE-IN-ASSETS>                         1496526
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              853
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    853
<AVERAGE-NET-ASSETS>                           1059140
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   .046
<PER-SHARE-GAIN-APPREC>                           .000
<PER-SHARE-DIVIDEND>                            (.046)
<PER-SHARE-DISTRIBUTIONS>                         .000
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<EXPENSE-RATIO>                                   .001
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</TABLE>

H03-024-X-029-2

                              POWER OF ATTORNEY

     The undersigned hereby constitute and appoint Marie E. Connolly,
Richard W. Ingram, Christopher J. Kelley, Kathleen K. Morrisey, Michael S.
Petrucelli and Elba Vasquez, and each of them, with full power to act
without the other, his or her true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for him or her, and in
his or her name, place and stead, in any and all capacities (until revoked
in writing) to sign any and all amendments to the Registration Statement of
Dreyfus Institutional Preferred Money Market Fund (including post-effective
amendments and amendments thereto), and to file the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities
and Exchange Commission, granting unto said attorneys-in-fact and agents,
and each of them, full power and authority to do and perform each and every
act and thing ratifying and confirming all that said attorneys-in-fact and
agents or any of them, or their or his or her substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.




/s/ Clifford Alexander                  April 16, 1998
Clifford Alexander




/s/ Lucy Wilson Benson                  April 16, 1998
Lucy Wilson Benson




/s/ Joseph S. DiMartino                 April 16, 1998
Joseph S. DiMartino




ASC-035-194-029
              DREYFUS INSTITUTIONAL PREFERRED MONEY MARKET FUND


                      ASSISTANT SECRETARY'S CERTIFICATE


I, Elba Vasquez, Vice President and Assistant Secretary of Dreyfus
Institutional Preferred Money Market Fund (the "Fund"), hereby certify that
set forth below is a copy of the resolution adopted by the Fund's Board
members at a Board meeting held on April 16, 1998.

                                 RESOLUTIONS

RESOLVED, that the following persons be, and they hereby are, elected to the
offices set forth opposite their respective names, to serve at the pleasure
of the Fund's Board:

President and Treasurer            Marie E. Connolly
Vice President and Assistant Treasurer  Richard W. Ingram
Vice President and Assistant Treasurer  Mary A. Nelson
Vice President and Assistant Treasurer  Joseph F. Tower, III
Vice President, Assistant Treasurer and Michael S. Petrucelli
     Assistant Secretary
Vice President and Assistant Secretary  Douglas C. Conroy
Vice President and Assistant Secretary  Christopher J. Kelley
Vice President and Assistant Secretary  Kathleen K. Morrissey
Vice President and Assistant Secretary  Elba Vasquez

; and it be further

RESOLVED, that the Registration Statement and any and all amendments and
supplements thereto may be signed by any one of Marie E. Connolly, Richard
W. Ingram, Christopher J. Kelley, Kathleen K. Morrissey, Michael S.
Petrucelli and Elba Vasquez, as the attorney-in-fact hereby is authorized
and approved; and that such attorneys-in-fact, and each of them, shall have
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in connection with such Registration
Statement and any and all amendments and supplements thereto, as whom he or
she is acting as attorney-in-fact, might or could do in person.

IN WITNESS WHEREOF, I have hereunto signed by name and affixed seal of the
Fund on July 29, 1998.


                              /s/ Elba Vasquez
                              Elba Vasquez
                              Vice President and Assistant Secretary



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