NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 49 



SEMELE INCONGRUA Carpenter, 1864. 



Suppl. Rep. Brit. Assoc, p. 640; Proc. Cal. Acad. Sci., vol. 3, p. 208. 

 Monterey, California, to the Coronado Islands. 



SEMELE PULCHRA Sowerby, 1832. 



Proc. Zool. Soc, p. 57; Conch. 111., Amphidesma, fig. 2. 

 Monterey, California, to Ecuador. 



Genus CUMINGIA Sowerby, 1833. 



CUMINGIA LAMELLOSA Sowerby, 1833. 



Proc. Zool. Sue, p. 34; Conch, [con., Cumingia, pi. 1, fig. 5. 

 Crescent City. California, south to Payta, Peru. 



Family DONACIDAE. 

 Genus DONAX Linnaeus, 1758. 



DOXAX CALIFORNICA Conrad, 1837. 



.Tourn. Acad. Nat. Sci. Phila., vol. 7, p. H54, pi. -19, fig. 1. 

 San Pedro, California, to Panama. 



DOXAX GOULDII Dal!, 1919. 



Boston Journ. Nat. Hist., vol. 6, p. 394 (as obesus), pi. 15, fig. 9. 

 Santa Barbara, California, to Acapulco. 



DOXAX PUXCTATOSTRIATA Hanley, 1843. 



Proc. Zool. Soc, p. 5 ; Thes. Conch., Dona.r, p. 310, figs. 49, 50. 

 San Pedro, California, to Payta, Peru. 



DOXAX CONRADI Deshayes, 1854. 



Proc Zool. Soc, p. 351; Condi. Icon., Dona.r. pi. 5, fig. 29. 

 San Diego, California, to Central America. 



Family PSAMMOBIIDAE. 



Genus PSAMMOBIA Lamarck, 1818. 



Subgenus Gobraeus Leach, 1852. 



GOBRAEUS REGULARIS Carpenter, 1864. 



Ann. Mag. Nat. Hist., ser. 3, vol. 13, p. 311'. 

 San Diego, California, to Cape San Lucas. 



GOBRAEUS CALIFORXICUS Conrad, 1848. 



Journ. Acad. Nat. Sci. Phila., vol. 7, pi. 19, fig. 3; Proc, vol. 4, p. 121. 

 Japan, Kamchatka, (he Aleutian Islands and south to San Diego, California. 



GOBRAEUS EDENTULUS Gabb, 1869. 



Pal. Cal., vol. 2, p. 53, pi. 15, fig. 11. 



San Pedro and Catalina Island, California, to San Diego. Also Pliocene 

 of California. 



