May 10, 1996
DREYFUS INSTITUTIONAL SHORT TERM TREASURY FUND
SUPPLEMENT TO PROSPECTUS
DATED APRIL 1, 1996
THE FOLLOWING INFORMATION SUPERSEDES ANY CONTRARY INFORMATION
CONTAINED IN THE SECTION OF THE FUND'S PROSPECTUS ENTITLED "MANAGEMENT OF THE
FUND-CUSTODIAN AND TRANSFER AND DIVIDEND DISBURSING AGENT."
Mellon Bank, N.A., located at One Mellon Bank Center, Pittsburgh,
Pennsylvania 15258, serves as the Fund's Custodian.
721/680s051096
May 10, 1996
DREYFUS INSTITUTIONAL SHORT TERM TREASURY FUND
Supplement to Statement of Additional Information
dated April 1, 1996
The following information supersedes any contrary information
contained in the section of the Fund's Statement of Additional Information
entitled "Transfer and Dividend Disbursing Agent, Custodian, Counsel and
Independent Auditors."
Mellon Bank, N.A., One Mellon Bank Center, Pittsburgh, Pennsylvania
15258, is the Fund's Custodian.
