276 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 37. 
GASTROCHENA RUGULOSA Sowerby. 
1834. Proc. Zool. Soc., p. 22; Thes. Con., Gastrochena, p. 128, 
pl. 470, fig. 25, 1884. Galapagos Islands. 
Genus SPENGLERIA Tryon. 
SPENGLERIA TRUNCATA Sowerby. 
1834. Proc. Zool. Soc., p. 21; Thes. Con., Gastrochena, p. 130, 
pl. 470, fig. 13, 1884. Panama and southward. 
Superfamily ADESMACEA. 
Family PHOLADIDZ. 
Genus PHOLAS Linneus. 
PHOLAS CHILOENSIS Molina. 
1782. Saggio stor. nat. de Chile, pp. 104 (note), p. 348.— PHILIPPI, 
Abb., vol. 3, p. 134, pl. 1, figs. 4, 5, 1849.—Hurs, Hist. de 
Chile, vol. 8, Mol., p. 381, pl. 6, fig. 3, 1854. Gulf of Panama 
to Peru, and south to Chiloé Island. 
Genus BARNEA Leach. 
BARNEA CRUCIGERA Sowerby. 
1834. Pholas cruciger SowERBY, Proc. Zool. Soc., p. 69; Thes. 
Con., Pholas, p. 489, pl. 104, figs. 24-26, 1849. Gulf of 
Panama to Guayaquil. Also Atlantic. 
BARNEA SUBTRUNCATA Sowerby. 
1834. Pholas subtruncatus SowERBy, Proc. Zool. Soc., p. 69.— 
P. lamellosa Orpieny, Voy. Am. Meér., p. 498, pl. 77, figs. 
20, 21, 1846. Guayaquil and southward to Paita, Peru, 
Magellan strait, and the Atlantic coast of southern Argentina. 
BARNEA PACIFICA Stearns. 
1871. Pholas pacifica StBARNS, Proc. Cal. Acad. Sci., vol. 5, 
p- 81, pl. 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. 
1849. Thes. Con., Pholas, p. £90, pl. 107, figs. 76-77. Esqui- 
‘mault, British Columbia, and south to Chiloé Island, Chile. 
PHOLADIDEA (HATASIA) MELANURA Sowerby. 
1834. Pholas melanura SowERBY, Proc. Zool. Soc., p. 70; Thes. 
Con., Pholas, p. 499, pl. 107, figs. 78-79, 1849. Gulf of Cali- 
fornia and south to Ecuador. 
PHOLADIDEA PENITA Conrad. 
18387. Pholas penita Conrap, Journ. Acad. Nat. Sci. Phila., 
vol. 7, p. 237, pl. 18, fig. 7. California, south to Guayaquil. 
