MIGRATIONS OF THE 



HORSESHOE CRAB 



UMULUS POLYPHEMUS 



IN PLUM ISLAND SOUND, MASS. 



Marine Biological Laboratory 



DECl J 1957 

 WOODS HOLE, MASS. 



^ 



SPECIAL SCIENTIFIC REPORT-FISHERIES Na 220 



UNITED STATES DEPARTMENT OF THE INTERIOR 

 FISH AND WILDLIFE SERVICE 



