NO. 1704. A COLLECTION OF SHELLS FROM PERU—DALL. 251 



LEDA ELENENSIS Sowerby. 



1832. JV^ucula elenensis SowKRBY , Proc. Zool. Soc. , p. 198; Con. 

 111., JV'Ucula, fig-, 14, 1833. Santa P^lena, Ecuador. 



LEDA GIBBOSA Sowerby. 



1832. Nucula gibhosa Sowerby, Proc. Zool. Soc, p. 198; Con. 

 111., Nucnla^ fig. 9, 1833. Gulf of Panama to Paita, Peru. 



LEDA ORNATA Orbigny. 



1846. Voy. Am. Mer., p. 546, pi. 82, tigs. 4-6. Paita, Peru. 

 Genus YOLDIA Moreh. 



YOLDIA (ADRANA) SOWERBYANA Orbigny. 



1846. Voy. Am. Mer., p. 544. — Sowerby, Con. 111., Nucnla^ 

 tig. 1 (as Imiceolata)^ 1833. — Hanley, Thes. Con., Nuciilldse.^ 

 Leda No. 2, fig. 33, 1860. Jipijapa, Ecuador. 



YOLDIA (ADRANA) CRENIFERA Sowerby. 



1832. Nucula ci'enif era '^oy^^w&x ^Yyoq. Zool. Soc, p. 197; Con. 

 111., Nucula, fig. 3. Jipijapa, Ecuador. 



YOLDIA (ADRANA) ELONGATA Sowerby. 



1832. Nucnia elonr/ata Sowerby, Proc Zool. Soc, p. 197; Con. 

 111., Nucula, tig. 2, 1833. Coast of Ecuador. 



Genus MALLETIA Desmoulins. 

 MALLETIA CHILENSIS Desmoulins. 



1832. Actes Soc. Linn, de Bordeaux, vol. 5, p. 85, pi. 1. Co- 

 quimbo, south to Talcahuano Bay, Chile. 



Genus TINDARIA Bellardi. 

 TINDARIA SULCULATA Couthouy. 



1852. Nucula aulculata Couthouy, Wilkes Exp. Sh., p. 424, pi. 

 37, figs. 539 a-e. Talcahuano, Chile, south to the Magellanic 

 region. 



(FILIBRANCHIATA.) 



Superfamily ARCACEA. 



Genus ARCA Linnaeus. 



ARCA ANGULATA King. 



1831. Zool. Journ., vol. 5, p. 336. — Stempell, Fauna Chilensis, 

 vol. 2, p. 219, pi. 12, figs. 1-9, 1899. Juan Fernandez Island. 



ARCA MUTABILIS Sowerby. 



1833. Proc. Zool. Soc, p. 17. — Reeve, Con. Icon., Area, pi. 13, 

 fig. 35, 1844. Gulf of California to Guayaquil. 



ARCA PACIFICA Sowerby. 



1833. Byssoarca pacifica Sowerby, Proc. Zool. Soc, p. 17. — 

 Reeve, Qon. Iqow., Area, pi. 11, fig. 75, 1844. Gulf of Cali- 

 fornia to Paita, Peru. 



