no. 1704. A COLLECTION OF SHELLS FROM PERU—DALL. PAD 
Family PTERIIDZ. 
Genus PTERIA Scopoli. 
PTERIA PERUVIANA Reeve. 
1857. <Avicula peruviana Reve, Con. Ieon., Avicula, pl. 14, 
fie. 58. Gulf of California to Paita, Peru. 
Genus MARGARITIPHORA Megerle. 
MARGARITIPHORA CUMINGI Reeve. 
1857. Avicula cumingi REEVE, Con. Icon., pl. 4, fig. 6. Paita, 
Peru, and the Galapagos Islands. | 
Superfamily OSTRACEA. 
Family OSTREIDZ. 
Genus OSTREA Linneus. 
OSTREA A.QUATORIALIS Orbigny. 
1846. Voy. Am. Mér., p. 672. Bay of Guayaquil (on trees). 
’ Paita, Peru. 
OSTREA CALLICHROA Hanley. 
1845. Proc. Zool. Soc., p. 107.—SoweErBy, Con. Icon., Ostrea, 
pl. 4, fig. 6, 1870. Chiloé Island, Chile. 
OSTREA CHILENSIS Philippi. 
1845. Con. Cab., ed. 2, Ostrea, p. 74, pl. 18, figs. 7, 8. Coast of 
Keuador, south to Chiloé Island, Chile. 
OSTREA COLUMBIENSIS Hanley. 
1845. Proc. Zool. Soc., p. 107.—SowxErBy, Con. Icon., Ostrea. 
pl. 7, fig. 10a-6, 1871. Gulf of California, south to Coquimbo, 
Chile. 
OSTREA LONGIUSCULA Hupé. 
1854. Hist. de Chile, Zodl., Mol., p. 282, pl. 5, fig. 3. Coquimbo, 
Chile. 
OSTREA MEGODON Hanley. 
1845. Proc. Zool. Soc., p. 106.—SoweErBy, Con. Icon., Osérea, 
pl. 12, fig. 24, 1871. Scammon Lagoon, Lower California, 
to Sechura Bay, Peru. Fossil, Antilles. 
OSTREA VINOLENTA Hupé. 
1854. Hist. de Chile, Zoél., Mol., p. 282, pl. 5, fig. 2. Coquimbo, 
Chile. 
Superfamily PECTINACEA. 
Family PECTINIDZ. 
Genus PECTEN Muller. 
PECTEN DENTATUS Sowerby. 
1835. Proc. Zool. Soc., p. 109; Thes. Con., vol. 1, Pecten, p. 49, 
pl. 15, figs. 105, 106, 1843. Santa Elena, Ecuador, to Paita, 
Peru. 
