United States Department of the Interior, Fred A. Seaton, Secretary 

 U.S. Fish and Wildlife Service 



MIGRATIONS OF THE HORSESHOE CRAB, LIMULUS POLYPHEMUS, 

 IN PLUM ISLAND SOUND, MASSACHUSETTS 



By 



John p. Baptist, Fishery Research Biologist, U.S. F.W.S., Beaufort, 

 N.C., Osgood R . Smith, Fishery Research Biologist, U.S.F.W., 

 Washington, D.C., and John W. Ropes, Fishery Research 

 Biologist, Clam Investigations, U.S.F.S.W., 

 Kingston, R. I. 



Special Scientific Report- -Fisheries No. 22 0. 



Washington, D. C. 

 September 1957 



