No. 1704. A COLLECTION OF SHELLS FROM PERU—DALL. 243 
FISSURELLA (CREMIDES) OBSCURA Sowerby. 
1834. Proc. Zool. Soc., p. 125; Con. Ill., Missuretla, fig. 27. 
Gulf of Panama southward to Lambayeque, Peru, and the 
Galapagos Islands. 
FISSURELLA (CREMIDES) VIRESCENS Sowerby. 
1834. Proc. Zool. Soc., p. 125; Con. Ill., Missuretla, fig. 51. 
Mazatlan, Mexico, south to Paita, Peru, and the Galapagos 
Islands. 
Genus MEGATEBENNUS Pilsbry. 
MEGATEBENNUS COKERI Dall. 
Oe eroe. US. Nate Musi, vole-3(jp. 1s, pl. 5, figs. 3) 7. 
Lobos de Afuera Island, Peru. 
Genus FISSURIDEA Swainson. 
FISSURIDEA ALTA C. B. Adams. 
1852. Fissurella alta C. B. Adams, Panama Sh., pp. 236, 320.— 
Sowerby, Thes. Con., /issurella, p. 194, pl. 7, figs. 154-6, 
1866. Mazatlan, Mexico, to Paita, Peru, and the Galapagos 
Islands. 
FISSURIDEA ASPERIOR Dall, new name. 
1909. Lissurella aspera SOWERBY, Proc. Zool. Soc., 1834, p. 127; 
Con. Ill., ’ssurella, fig. 46. Not of Escuscuourz, Zodl. 
Atlas, 1833. Pacasmayo, Peru. 
FISSURIDEA FONTAINEANA Onrbigny. 
1841. Fissurella fontaineana OrBieny, Voy. Am. Mér., p. 477, 
pl. 78, figs. 12, 13, Islay, Peru. 
FISSURIDEA INEQUALIS Sowerby. 
1834, HMissurella inequalis SowERBY, Proc. Zool. Soc., p. 126; 
Con. Ill., A%ssuredla, fig. 45, 1835. Lower California to Pan- 
ama and the Galapagos Islands. 
FISSURIDEA SATURNALIS Carpenter. 
1864. Glyphis saturnalis CARPENTER, Ann. Mag. Nat. Hist., p. 
479. (Unfigured.) Cape St. Lucas, and south to the Gala- 
pagos Islands. 
Genus LUCAPINELLA Pilsbry. 
LUCAPINELLA ASQUALIS Sowerby. 
1834. Missurella equalis SOWERBY, Proc. Zool. Soc., p. 127; 
Con. Ill., /vssurella, fig. 56, 1841. Santa Elena, Guayaquil, 
Ecuador. 
LUCAPINELLA CALLOMARGINATA Carpenter. 
1872. Clypidella callomarginata (CARPENTER Ms.) Dati, Am. 
Journ. Conch., vol. 7, p. 133, pl. 15, fig. 8.—Pitspry, Man. 
Con., vol. 12, p. 196, pl. 44, figs. 3, 4, 5; pl. 61, figs. 1-5, 
1890. Lobitas, California, and southward to Paita, Peru, 
and Valparaiso, Chile. 
