DECHERT PRICE & RHOADS
1775 Eye Street, N.W.
Washington, DC 20006
September 3, 1998
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, DC 20549
Re: MainStay Institutional Funds Inc.
Dear Sir or Madam:
Attached for electronic filing pursuant to Rule 497(e) under the
Securities Act of 1933 is a supplement dated September 1, 1998 to the
prospectuses of MainStay Institutional Funds Inc. Institutional Class and
MainStay Institutional Funds Inc. Institutional Service Class, each dated May 1,
1998.
Please call me at (202) 261-3409 or Jeffrey L. Steele at (202)
261-3314 with any questions regarding this filing.
Sincerely,
/s/ William J. Kotapish
