250 riiOCEEDINGB OF THE NATIONAL MVSEVM. vol.37. 



Class PELECYPODA. 



Order F»RI0N0DE:SNIACE:A. 



(FOLIOBRANCHIA TA.) 

 Superfamily NUCULACEA. 



Family NUCULID^.. 

 Genus NUCULA Lamarck. 



NUCULA COLOMBIANA Dall. 



1908. Albatross Rep., p. H71. Panama to Patagonia. 



NUCULA DECLIVIS Hinds. 



1843. Proc. Zool. Soc, p. 97; Zool, Voy. Sulph., p. 63, pi. 18, 

 tig. 8, 1844. Panama to Magellan Straits. 



NUCULA EXIGUA Sowerby. 



1832. Proc. Zool. Soc., p. 198; Con. Ill, Nucida, figs, 24, 24*, 

 1833. Acapiilco, Mexico, south to Ecuador and to the 

 Magellanic region. 



NUCULA GRAYI Orbigny. 



1841. Voy. Am. Mer., p. 625.— Sowerby, Con. 111., Nucida, 

 tig. 21. Valparaiso, Chile, 



NUCULA PAYTENSIS A. Adams. 



1850. Proc. Zool. Soc, p. 51. — Hanley, Thes. Con., Nucula., p. 

 50, pi. 5, tigs, 160-161, 1860. Paita, Peru. 



NUCULA PISUM Sowerby. 



1832. Proc. Zool. Soc, p. 198; Con. 111., Nucula, fig. 23, 1841.— 

 Okbigny, Vo3^ Am. Mer., p, 624 (as N. semiornata)^ pi. 84, 

 figs. 27-29, 1846. Valparaiso to San Bias, Chile. 



Family LEDID^E. 

 Genus LEDA Schumacher. 



LEDA ACUTA Conrad. 



1831. Nucula acuta Conrad, Am. Mar. Con., p. 32, pi. 6, fig. 3 

 (not of Sowerby, 1839). — Sowerby, Con. 111., Nucula., fig. 

 15 (as y. cuneata). California, the Gulf of Panama, and south 

 to Valparaiso, Chile. Also Atlantic. 



LEDA CALLIMENE Dall. 



1908. Leda {Jupiter ia) calliinene Dall, Alhatross Rep,, p. 342, 

 pi. 17, figs. 3, 4. Gulf of Panama to Tome, Chile. 



LEDA EBURNEA Sowerby. 



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

 III., Nucula, fig. 10, 1833. Gulf of Panama to the Bay of 

 Caraques, Ecuador. 



