32 RECENT BIVALVE MOLLUSKS 



Subgenus Archivesica Dall, 1908. 



Archivesica gigas Dall, 1895. 



Off Point Sur, Cal., and in the Gulf of California in deep 

 water. 



!> Siipcrfamily \>neracea 



Family Veneridae 



Subfamily Dosiniinae 



Genus Dosinia Scopoli, 1777. 



Section Dosinidia Dall, 1902. 



Dosinia ponderosa Gray, 1838. 



San Diego, Cal., and south to Payta, Peru. 



Subfamily Aleretricinae 



Genus Tivela Link, 1807. 



Subgenus Pachydesma Conrad, 1854. 



Pachydesma stultorum Mawe, 1823. 



Santa Cruz, Cal., and south to Socorro Island. 



Genus Transennella Dall, 1883. 



Transennella tantilla Gould, 1853. 



Sitka Harbor, Alaska, and south to Lower California. 



Genus Amiantis Carpenter, 1863. 



Amiantis callosa Conrad, 1837. 



San Pedro, Cal., to Gulf of Tehuantepec. 



Genus Pitaria (Roemer) 1857." 



Pitaria newcombiana Gabb, 1865. 



Alonterey, Cal., to the Gulf of California and Clarion 

 Island. 



Genus Antigona Schumacher, 1817. 

 Section Ventricola Roemer, 1857. 



Antigona fordi Yates, 1890. 



Monterey, Cal., to Lower California. Panama? 



Genus Saxidomus Conrad, 1837. 



Saxidomus nuttallii Conrad, 1837. 



liaulinas Bay, Cal., to San Diego. 



Saxidomus giganteus Deshayes, 1839. 



Aleutian Islands from Attn eastward and south to Mon- 

 terey, Cal. 



