276 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



GASTROCHiENA RUGULOSA Sowerby. 



183i. Proc. Zool. Soc, p. 22; Thes. Con., Gastrochae.na , p. 128, 

 pi. 470, fig. 25, 1884. Galapagos Islands. 



Genus SPENGLERIA Tryon. 

 SPENGLERIA TRUNCATA Sowerby. 



1834. Proc. Zool. Soc, p. 21; Thes. Con., GastrocJisena^ p. 130, 

 pi. 470, tig. 13, 1884. Panama and southward. 



Superfamily ADESMACEA. 

 Family PHOLADID.E. 



Genus PHOLAS Linnaeus. 

 PHOLAS CHILOENSIS Molina. 



1782. Saggio stor. nat. de Chile, pp. 104 (note), p. 348. — Philippi, 

 Abb., vol. 3, p. 134, pi. 1, figs. 4, 5, 1849.— Hope, Hist, de 

 Chile, vol. 8, Mol., p. 381. pi. 6, fig. 3, 1854. Gulf of Panama 

 to Peru, and south to Chiloe Island. 



Genus BARNEA Leach. 

 BARNEA CRUCIGERA Sowerby. 



1834. Pliolas cruciger Sowerby, Proc. Zool. Soc, p. 69; Thes. 

 Con., Pholas, p. 489, pi. 104, figs. 24-26, 1849. Gulf of 

 Panama to Guayaquil. Also Atlantic. 



BARNEA SUBTRUNCATA Sowerby. 



1834. PJiohis suhtruncatus Sowerby, Proc. Zool. Soc, p. 69. — 

 P. lamdJosa Orbigny, Voy. Am. Mer., p. 498, pi. 77, figs. 

 20, 21, 1846. Guayaquil and southward to Paita, Peru, 

 Magellan strait, and the Atlantic coast of southern Argentina. 



BARNEA PACIFICA Stearns. 



1871. Phold.s pacijica Stearns, Proc. Cal. Acad. Sci., vol. 5, 

 p. 81, pi. 1, figs. 6, a-c. San Francisco Bay, Cal., and south 

 to Paita, Peru, and the coast of Chile. 



Genus PHOLADIDEA Turton. 



PHOLADIDEA (NETTASTOMELLA) DARWINI Sowerby. 



184!>. Thes. Con., Pholm, p. 490, pi. 107. figs. 76-77. Esqui- 

 mault, British Columbia, and south to Chiloe Island, Chile. 



PHOLADIDEA (HATASIA) MELANURA Sowerby. 



1834. Phol((s melaniirii, So\\Y.\mY, Proc. Zool. Soc, p. 70; Thes. 

 Con., Pholas, p. 499, pi. 107, figs. 78-79, 1849. Gulf of Cali- 

 fornia and south to Ecuador. 



PHOLADIDEA PENITA Conrad. 



1837. Pliolas penlta Conrad, Journ. Acad. Nat, Sci. Phila., 

 vol. 7, p. 237, pi. 18, fig. 7. California, south to Guayaquil. 



