UNITED STATES DEPARTMENT OF THE INTERIOR 



Walter J. Hickel, Secretary 



Russell E. Train, Under Secretary 



Leslie L. Glasgow, Assistant Secretary 



for Fish and Wildlife, Parks, and Marine Resources 



Charles H. Meacham, Commissioner, U.S. FISH AND WILDLIFE SERVICE 



Dayton L. Alverson, Acting Director, BUREAU OF COMMERCIAL FISHERIES 



Size Composition, Sex Ratio, and Size at 

 Maturity of Offshore Northern Lobsters 



By 

 BERNARD E. SKUD and HERBERT C. PERKINS 



United States Fish and Wildlife Service 

 Special Scientific Report — Fisheries No. 598 



Washington, D. C. 

 December 1969 



