68 



708 Cardiuin islandicum Chemnitz. 



Nearctic — south of Massachusetts; Sitka, Alaska. 



709 Cardium procerum Sowerby. 



Margarita bay, Lower California, to Peru, South America. 



710 Carinifex newberryi Lea. 



Shell light horn color, turreted, very minutely striated, above 

 and below acutely carinated, broadly and deeply umbilicated, 

 whorls 5, flat above, sloping convex below; aperture large, sub- 

 triangular. 



Living: Klamath lakes, Oregon, to Owens river and Clear 

 lake, California. Nevada. Utah. 



711 Cerithiopsis columna Carpenter. 



Straits of Fuca to San Diego, Cal. Keep, W. C. 548. 



712 Cerithiopsis tubercularis Montagu. 



British Isles to Mediterranean sea and Florida. 



713 Var. tuberculata Carpenter. 

 Straits of Fuca to San Diego. 



714 Var. tuberculoides Carpenter. 

 Southern California to Mazatlan. 



715 Chsetopleura conspicua Carpenter. 

 See under Chiton. 



716 Chsetopleura geminea Carpenter. 

 Monterey, California. 



717 Chaetopleura hartwegi Carpenter. 

 Monterey to San Pedro, California. 



718 Chaetopleura nuttalli Carpenter. 

 Alaska to Monterey, California. 



719 Chione excavata Carpenter. 



San Pedro, California, to Lower California. 

 Synonym of Venus undatella. 



Chione is a subgenus of Venus, and the species may be found 

 under either name. 



720 Chione fluctifraga Sowerby. 

 San Pedro to Gulf of California. 



721 Chione gnidia Broderip. 



Margarita bay, Lower California, to Ecuador, South America. 



722 Chione simillima Sowerby. 

 Monterey to Lower California. 



723 Chione succincta Valenciennes. 



Santa Barbara, Cal., to Ecuador, South America. 



724 Chione undatella Reeve. 



Catalina Island, California, to Gulf of California. 



725 Chiton albolineatus Sowerby. 



Ensenada, Lower California, to Acapulco, Mexico. 



