78 



WEST COAST SHELLS 



ria, Figure 51, has been 

 found in moderately deep 

 water from Monterey 

 southward. It is thin and 

 delicate, with zigzag, 

 brown markings, and a 

 papery epidermis. 



Figure 52 gives a bold 

 picture of Cytherea fordi^ 

 ^^'^•''^*^ Yates, Ford's Cytherea, 



which is found from the Santa Barbara Islands to 

 Panama. It is very thick and heavy and has a very 

 deep lunule. It sometimes reaches a length of two 

 and a half inches. This is the shell that passed for 

 years as Venus toreu??ia^ Gld., but that is found to 

 be a distinct Polynesian species. 



Fig. 53 



