UNITED STATES DEPARTMENT OF THE INTERIOR 



Stewart L. Udall, Secretary 



Frank P. Briggs, Assistant Secretary Jor Fish and Wildlije 



FISH AND WILDLIFE SERVICE, Clarence F. Pautzke, CommissioneT 



BuREAD OF Commercial Fisheries, Donald L. McKernan, Director 



Seasonal Gonadal Cycle of 



the Male Soft-Shell Clam, 



Mya arenaria, in Maryland 



By 



WILLIAM N. SHAW 



United States Fish and Wildlife Service 

 Special Scientific Report--Fisheries No. 508 



Washington, D.C. 

 February 1965 



