BLACKROCK Senior High Income Fund, Inc.

FILE #811-07456

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	LIST OF UNDERWRITERS
4/21/2008	Citigroup Inc.	6,000,000,000	2,000,000	Citigroup Global Markets Inc., Deutsche Bank Securities Inc., Goldman, Sachs & Co., Lehman Brothers Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Banc of America Securities LLC, Barclays Capital Inc, BNP Paribas Securities Corp, Credit Suisse Securities (USA) LLC, Greenwich Capital Markets, Inc., RBC Capital Markets Corporation, TD Securities (USA) LLC, Guzman & Co., Jackson Securities, LLC, Loop Capital Markets, LLC, Muriel Siebert & Co., Inc., Sandler O’Neil & Partners Group, L.P., The Williams Capital Partners Group, L.P., Toussaint Capital Partners, LLC, Utendahl Capital Group, LLC