THE PHYLA ARTHROPODA AND ONYCHOPHORA 



end 



end 



end 



pro 



pro 



Fig. 15.3. Comparative aspects of selected appendae;es of the lobster. Hnmams amencanus. A, 

 antenna; H, second maxilla; C, second maxilliped; /), third pereiopod or walking; lee;: E, 

 third pleopod or swimmeret; h\ uropod. Abbreviations: ^-v, exopodite; end, endopodite; pro, 

 protopodite: ep, epipodite; hr, branchia. (Redrawn from F. H. Herrick, 1909, Bulletin of 

 the I ..v. Bureau of Fisheries, vol. 29.) 



427 



