no. 1704. A COLLECTION OF SHELLS FROM PERU—DALL. 265 
CARDIUM (RINGICARDIUM) PROCERUM Sowerby. 
1832. Cardium procerum SowERBy, Proc. Zool. Soc., p. 83; 
Con. Ill., vol. 1, p. 5, pl. 50, fig. 23, 1834. Cedros Island, 
Lower California, south to the Lobos Islands, Peru. 
CARDIUM (TRIGONIOCARDIA) GRANIFERUM Broderip and Sowerby. 
1829. Cardium graniferum BropEerte and SowkErsBy, Zool. 
Journ, vol. 4, p. 36%. Con. Ill, Cardcum, p. 3, no 38, pl. 49, 
fig. 17, 1834. Gulf of California and south to Guayaquil. 
CARDIUM (TRIGONIOCARDIA) OBOVALE Sowerby. 
1833. Cardium obvvale SowErRsy, Proc. Zool. Soc., p. 84; Con. 
Ill., Cardium, pl. 46, fig. 4, 1833. Magdalena Bay, Lower 
California, and south to the coast of Ecuador. 
CARDIUM (FRAGUM) BIANGULATUM Sowerby. 
1829. Cardium biangulatum SOowERBY, Zool. Journ., vol. 4, p. 
367. Con. Ill., Cardium, fig. 2, 1833. Catalina Island, Cali- 
fornia, south to Guayaquil. 
CARDIUM (FRAGUM) MAGNIFICUM Deshayes. 
1857. CarpEntTER, Rep. Brit. Assoc., 1857, p. 187.—C. plani- 
costatum SOwERBY, Con. Ill., Cardium, no. 83, pl. 50, fig. 25, 
1834. Lower California south to Paita, Peru. 
CARDIUM (PAPYRIDEA) ASPERSUM Sowerby. 
1833. Cardium aspersum SOWERBY, Proc. Zool. Soc., p. 85; 
Con. Ill., Cardium, fig. 15, 1834. Magdalena Bay, Lower 
California, to Guayaquil. 
CARDIUM (LEVICARDIUM) ELENENSE Sowerby. 
-1840. Cardium elenense SowERBY, Proc. Zool. Soc., p. 109; 
Con. Ill., Cardium, pl. 181, fig. 58, 1840. Gulf of California 
to Guayaquil and Clarion Island. 
Superfamily VENERACEA. 
Family VENERIDZ. 
Genus DOSINIA Seopoli. 
DOSINIA DUNKERI Philippi. 
1844. Cytherea dunkeri Puiuirrt, Abb., vol. 1, p. 4, pl. 2, fig. 9.— 
SoweErsy, Thes. Con., Artemis, pl. 140, fig. 5. Gulf of Cali- 
fornia, south to Tumbes, Peru, and the Galapagos Islands. 
DOSINIA PONDEROSA Gray. 
1838. Artemis ponderosa Gray, in Analyst, vol. 8, p. 309.— 
Puiiprr, Abb., vol. 1, Cytherea, p. 171.—Sowrrsy, Thes. 
Con., Artemis, p. 656, pl. 140, fig. 2, 1852. Magdalena Bay, 
Lower California, south to Paita, Peru. 
Genus TIVELA Link. 
TIVELA BYRONENSIS Gray. 
1838. Trigona byronensis Gray, Analyst, vol. 8, p. 302-9, no, 24. 
Scammon Lagoon, Lower California, south to Guayaquil. 
