l^ PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65 



KISSOINA DALLI Bartsch, 1915; two Bpcdmens. 



Living, San Pedro, California-South Coronado Island. 



Family TRUNCATELLIDAE. 



Genus TRUNCATELLA (Leach, 1818) Risso, 1826. 



TRUNCATELLA CALIFORNICA Pfeiffer, 1857; five ipecimeng. 



Living, Santa Barbara-San Diego and San Martin Island, Lower California. 



Family SYNCERATIDAE. 

 Genus SYNCERA Gray, 1821. 



SYNCERA TRANSLUCENS Carpenter, 1864; eight Rpecimcns. 



Living, Vancouver Island-Lower California. 



Family HIPPONICIDAE. 



Genus HIPPONIX Defrance, 1819. 



HIPPONIX ANTIQUATUS Linnaeus, 1767; five specimens. 



Living, Crescent City, California-Panama and the Galapagos Islands. 



HIPPONIX ANTIQUATUS CRANIOIDES Carpenter, 1864; one specimen. 



Living, Vancouver Island-San Pedro, California. 



HIPPONIX TUMENS Carpenter, 1865; three specimens. 



Living, Crescent City, California-San Diego, California. 



Family CREPIDULIDAE. 

 Genus CREPIDULA Lamarck, 1801. 



Section CREPIDULA s. s. 



CREPIDULA ONYX Cowerby, 1825; four very small specimens. 



Living, Monterey, California-Panama. 

 CREPIDULA EXCAVATA Broderip, 1834; six specimens. 



Living, Monterey, California-Payta, Peru. 



CREPIDULA ADUNCA Sowerby, 1825; quite plentiful. 



Living, Vancouver Island-Cape San Lucas, Lower California. 



CREPIDULA ACULEATA Gmelin, 1792; eight specimens. 



Living, Santa Barbara, California-Valparaiso, Chile. 

 CREPIDULA DORSATA Broderip, 1834; six specimens. 



Living, Puget Sound-Peru and South America. 



Subgenus lANACUS Morch, 1852. 



CREPIDULA NUMMARIA Gould, 1846; plentiful. 

 Living, Bering Sea-Mazatlan, Mexico. 



Family CALYPTRAEIDAE. 



Genus CALYPTRAEA Lamarck, 1799. 



CALYPTRAEA FASTIGIATA Gould, 1846; nine specimens. 



Living, Port Etches, Alaska-Puget Sound. 



