276 



COMPARATIVE ZOOLOGY. 



FIG. 234. Cowry (Cyprcea capensis} two 

 thirds natural size. South Africa. 



FIG. 235. Haliotis, or " Pearly Ear- 

 shell." Pacific coasts. 



FIG. 236. Spindle- 

 shell (Fusus coins) ; 

 one half natural 

 size. Ceylon. 



FIG. 237. Cassis rufa, or 

 "Helmet-shell;" one fourth 

 natural size. Indian Ocean. 



FIG. 238. Auger-shell 

 (Terebra maculata) ; 

 one half natural 

 size. China seas. 



FIG. 239. Cone-shell (Conus 

 marmoreus) ; two thirds 

 natural size. China seas. 



FIG. 240. Chiton squa- 

 mosus; one half natu- 

 ral size. West Indies. 



FIG. 2 tl. Volute (Valuta 

 mufrica) ; one half nat- 

 ural size. West Indies. 



