no. 1704. A COLLECTION OF SHELLS FROM PERU—DALL. 205 
Genus MARINULA King. 
MARINULA ACUTA Orbigny. 
1835. Auricula acuta ORBIGNY, in Guerin, Mag. de Zodl., 1835, 
p. 23, no. 2; Voy. Am. Mér., p. 326, pl. 42, figs. 4-6, 1837. 
Panama to Guayaquil. 
MARINULA MARINELLA Kiister. 
1844. Auricula marinella KtsrEr, Conch. Cab., Auricula, p. 24, 
pl. 3, figs. 4, 5. Callao, Peru, south to the island of Chiloé. 
MARINULA PEPITA King. 
1831. Zodl. Journ., vol. 5, p. 344.—H. and A. Apams, Gen. Rec. 
Moll., vol. 2, p. 247, pl. 83, fig. 2a, 1856. Guayaquil, south 
to the island of Chiloé. 
Superfamily PETROPHILA. 
Family SIPHONARIID®. 
Genus SIPHONARIA Sowerby. 
SIPHONARIA COSTATA Sowerby. 
1835. Proc. Zool. Soc., p. 6.—RErEvE, Con. leon., vol. 9, pl. 4, 
fig. 19, 1856. Guacomayo, Central America, south to Val- 
paraiso, Chile. 
SIPHONARIA GIGAS Sowerby. 
1825. ‘Tankerville Cat., App., p. vi.—R«ExEv#, Con. Icon., pl. 1, 
fic. 3, 1856. Acapulco, Mexico, to Peru. Cocos and Gala- 
. pagos Islands. 
SIPHONARIA LA:VIUSCULA Sowerby. 
1835. Proc. Zool. Soc., p. 7.—ReEEVE, Con. Icon., vol. 9, pl. 1, 
fig. 5, 1856. Valparaiso, southward to the Magellan Straits. 
SIPHONARIA LESSONI Blainville. 
1824. Dict. Sci. Nat., vol. 32, p. 267, pl. 44, fig. 2. Nicaragua, 
and south to the Magellan Straits. 
SIPHONARIA LINEOLATA Sowerby. 
1835. Proc. Zool. Soc., p. 6.—REEVE, Con. Icon., vol. 9, pl. 3, 
fio. 11, 1856. Guayaquil, south to the Chilean coast. 
SIPHONARIA MAURA Sowerby. 
1835. Proce. Zool. Soc., p. 7.—REEvVE, Con. Icon., vol. 9, pl. 7, 
fig. 36, 1856. Magdalena Bay, Lower California, south to 
Guayaquil. Chile (Dautzenberg). 
SIPHONARIA TENUIS Philippi. 
1860. Atacama Reise, p. 181, Zodl., pl. 7, figs. 5a-c. Paita, 
Peru, to Valparaiso, Chile. 
Genus WILLIAMIA Monterosato. 
WILLIAMIA GALAPAGANA Dall. 
1909. LWacella subspiralis WIMMER, Sitzb. k. Akad. Wiss. Wien., 
vol. 80, p. 41, 1879, not of CaRPENTER, 1866. Galapagos 
Islands, Panama Bay, ete., on floating seaweed. 
