276 



COMPARATIVE ZOOLOGY. 



Fig. 239.— Cone-shell (Conus Fig. 240. — Chiton squa- 

 marmoreus); two thirds mosus; one half natu- 

 natural size. China seas. ral size. West Indies. 



Fig. 241.— Volute (Voluta 

 musica) ; one half nat- 

 ural size. West Indies. 



