OF THE NORTHWEST COAST OF AMERICA 25 



Supcrfainily Carditacea 



Family Carditidae 



Genus Cardita (Bruguiere) Lamarck, 1799. 



Section Carditamera Conrad, 1838. 



Cardita subquadrata Carpenter, 1865. 



Queen Charlotte Islands to Todos Santos Bay. 



Genus Venericardia Lamarck, 1801. 

 Section Cyclocardia Conrad, 1867. 



Venericardia barbarensis Stearns, 1890. 



Santa Barbara Channel to San Diego, Cal., in deep water. 

 Venericardia gouldii Dall, 1902. 



Off San Diego, Cal. 

 Venericardia stearnsii Dall, 1902. 



Puget Sound. 

 Venericardia paucicostata Krause, 1885. 



Arctic Sea to Fuca Straits. 

 Venericardia crebricostata Krause, 1885. 



Point Barrow, Alaska, to Monterey, Cal. 

 Venericardia crassidens Broderip and Sowerby, 1829. 



Arctic and Bering Seas and eastward to Kadiak Island, 



Alaska. 

 Venericardia nodulosa Dall. 



Santa Barbara to the Coronado Islands. 

 Venericardia monilicosta Gabb, 1861. 



Santa Barbara, Pleistocene. Recent ? 

 Venericardia ventricosa Gould, 1850. 



Belkofifski Bav, Alaska, to Coronado Islands and Cortez 



Bank, Cal. 

 Venericardia incisa Dall, 1902. 



Unalashka to the Semidi Islands. Alaska. 



Subgenus ]\Iiodontiscus Dall, 1903. 



Miodontiscus prolongatus Carpenter, 1864. 



Middleton Island, Alaska, to San Diego, Cal. 

 Miodontiscus meridionalis Dall, 1916. 



Off Point Lonia, Cal.. 70 fathoms. 



Genus Calyptogena Dall, 1891. 



Calyptogena pacifica Dall. 1891. 



Clarence Strait, Alaska, to Santa Barbara Channel, Cal. 

 Calyptogena elongata Dall, 1916. 



Santa Barbara Islands to San Diego, Cal. 



