November 15, 1997
DREYFUS INDEX FUNDS
DREYFUS S&P 500 INDEX FUND
DREYFUS MIDCAP INDEX FUND
DREYFUS SMALL CAP STOCK INDEX FUND
DREYFUS INTERNATIONAL STOCK INDEX FUND
SUPPLEMENT TO PROSPECTUS
DATED JUNE 30, 1997
EFFECTIVE JANUARY 15, 1998, THE FOLLOWING POLICIES WILL BE IN EFFECT
FOR EACH FUND:
ADDITIONAL INFORMATION ABOUT PURCHASES, EXCHANGES AND REDEMPTIONS.
Each Fund is intended to be a long-term investment vehicle and is not
designed to provide investors with a means of speculation on short-term
market movements. A pattern of frequent purchases and exchanges can be
disruptive to efficient portfolio management and, consequently, can be
detrimental to each Fund's performance and its shareholders. Accordingly, if
the Fund's management determines that an investor is engaged in excessive
trading, each Fund, with or without prior notice, may temporarily or permanent
ly terminate the availability of Fund exchanges, or reject in whole or part
any purchase or exchange request, with respect to such investor's account.
Such investors also may be barred from purchasing other funds in the Dreyfus
Family of Funds. Generally, an investor who makes more than four exchanges
out of each Fund during any calendar year (for calendar year 1998, beginning
on January 15th) or who makes exchanges that appear to coincide with an
active market-timing strategy may be deemed to be engaged in excessive
trading. Accounts under common ownership or control will be considered as one
account for purposes of determining a pattern of excessive trading. In
addition, each Fund may refuse or restrict purchase or exchange requests by
any person or group if, in the judgment of the Fund's management, the Fund
would be unable to invest the money effectively in accordance with its
investment objective and policies or could otherwise be adversely affected or
if the Fund receives or anticipates receiving simultaneous orders that may
significantly
(CONTINUED ON REVERSE SIDE)
affect the Fund (E.G., amounts equal to 1% or more of the Fund's
total assets). If an exchange request is refused, the Fund will take no other
action with respect to the shares until it receives further instructions from
the investor. Each Fund may delay forwarding redemption proceeds for up to
seven days if the investor redeeming shares is engaged in excessive trading
or if the amount of the redemption request otherwise would be disruptive to
efficient portfolio management or would adversely affect the Fund. Each
Fund's policy on excessive trading applies to investors who invest in the
Fund directly or through financial intermediaries, but does not apply to the
Dreyfus Auto-Exchange Privilege, to any automatic investment or withdrawal
privilege described herein, or to participants in employer-sponsored
retirement plans.
During times of drastic economic or market conditions, each Fund may
suspend the Exchange Privilege temporarily without notice and treat exchange
requests based on their separate components _ redemption orders with a
simultaneous request to purchase the other fund's shares. In such a case, the
redemption request would be processed at the Fund's next determined net asset
value but the purchase order would be effective only at the net asset value
next determined after the fund being purchased receives the proceeds of the
redemption, which may result in the purchase being delayed.
INDXs1197
