No. 1704. A COLLECTION OF SHELLS FROM PERU—DALL. 251 
LEDA ELENENSIS Sowerby. 
1832. Nucula elenensis Sekar Proc. Zool. Soc., p. 198; Con. 
Ill., Vueula, fig. 14, 1833. Sina Elena, Manele 
LEDA pe aoea Sowerby. 
1832. Wucula gibbosa SowerRBy, Proc. Zool. Soc., p. 198; Con. 
Ill., Wucula, fig. 9, 1833. Gulf of Panama to Paita, Peru. 
LEDA ORNATA Orbigny. 
1846. Voy. Am. Mér., p. 546, pl. 82, figs. 4-6. Paita, Peru. 
Genus YOLDIA Moreh. 
YOLDIA (ADRANA) SOWERBYANA Orbigny. 
1846. Voy. Am. Mér., p. 544.—Sowmrsy, Con. IIl., Vucula, 
fig. 1 (as lanceolata), 1833.—Hanury, Thes. Con., Vuculide, 
Leda No. 2, fig. 33, 1860. Jipijapa, Ecuador. 
YOLDIA (ADRANA) CRENIFERA Sowerby. 
1832. Nucula crenifera SOwERBY, Proc. Zool. Soc., p. 197; Con. 
Ul., Nucula, fig. 3.  Jipijapa, Ecuador. 
YOLDIA (ADRANA) ELONGATA Sowerby. 
1832. Nucula elongata SowERByY, Proc. Zool. Soc., p. 197; Con. 
Ill., Wueula, fig. 2, 1833. Coast of Ecuador, _ z 
Yldoo (Adrana) I pe-ca. cle Va ra 
Genus MALLETIA Desmoulins. 
MALLETIA CHILENSIS Desmoulins. 
1832. Actes Soc. Linn. de Bordeaux, vol. 5, p. 85, pl. 1. Co- 
quimbo, south to Taleahuano Bay, Chile. 
Genus TINDARIA Bellardi. 
TINDARIA SULCULATA Couthouy. 
1852. Nucula sulculata CoutHouy, Wilkes Exp. Sh., p. 424, pl. 
37, figs. 5389 a-e. Taleahuano, Chile, south to the Magellanic 
region. 
(FILIBRANCHIATA.) 
Superfamily ARCACEA. 
Genus ARCA Linnezus. 
ARCA ANGULATA King. 
1831. Zod]. Journ., vol. 5, p. 336.—StTEMPELL, Fauna Chilensis, 
vol. 2, p. 219, pl. 12, figs. 1-9,1899. Juan Fernandez Island. 
ARCA MUTABILIS Sowerby. 
1833. Proce. Zool. Soc., p. 17.—RrEveE, Con. Icon., Arca, pl. 18, 
fig. 85, 1844. Gulf of California to Guayaquil. 
ARCA PACIFICA Sowerby. 
1833. Byssoarca pacifica SOwERBY, Proc. Zool. Soc., p. 17.— 
REEVE, Con. Icon., Arca, pl. 11, fig. 75, 1844. Gulf of Cali- 
fornia to Paita, Peru. 
