928 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 37. 
CYPRA NIGROPUNCTATA Gray. 
1828. Zool. Journ., vol. 4, p. 81.—SowErsy, Con. Ill., Cyprea, 
fig. 22, 1832. Manta, Ecuador, south to Paita, Peru (Chile, 
Hidalgo), and the Galapagos Islands. 
CYPRA ROBERTS! Hidalgo. 
1906. Mon. Cyprea, pp. 161, 220.—C. punctulata, Gray, Zodl. 
Journ., vol. 1, p. 387, 1824; not of Gmutin, Syst. Nat., p. 
3404, 1791.—SoweErsy, Con. Ill., Cyprexa, pl. 4, fig. 20, 1832. 
Gulf of California to Paita, Peru. 
Family TRIVUD. 
Genus TRIVIA Gray. 
TRIVIA ACUTIDENTATA Gaskoin. 
1835. Proc. Zool. Soc., p. 201.—Burron, Nautilus, vol. 19, p. 
132, 1906. (Unfigured.) Guayaquil and the Galapagos 
Islands. 
TRIVIA FUSCA Gray. 
1832. In Sowersy, Con. Ill., fig. 37. Mazatlan to Guayaquil 
and the Galapagos Islands. 
TRIVIA PACIFICA Gray. 
1832. Proc. Zool. Soc., p. 185.—Sowmrpsy, Thes. Con. Cyprexa, 
p. 45, pl. 34, figs. 441, 448, 1859. Gulf of California to 
‘Panama and the Galapagos Islands. 
TRIVIA PULLA Gaskoin. 
1846. Proc. Zool. Soc., p. 24; 1848, p. 97.—SowmErpy, Thes. 
Con., Cyprea, p. 48, pl. 26. figs. 490, 491, 1859. Gulf of 
California to Guayaquil and the Galapagos Islands. 
TRIVIA RADIANS Lamarck. 
1810. Cyprea radians Lamarck, Ann. du Mus., vol. 16, p. 
102.—Sowmrpsy, Con. IIl., pl. 119, fig. 146, 1837. Gulf of 
California to Peru and Chile and the Galapagos Islands. 
TRIVIA RUBESCENS Gray. 
1832. Proc. Zool. Soc., p. 185.—SowxErsy, Con. Ill., Cyprea, 
fig. 31,1832. Gulf of California to Panama and the Galapagos 
Islands. 
TRIVIA SANGUINEA Gray. 
1832. In Sowmrsy, Con. Ill., p. 13, fig. 32. Gulf of California 
to Guayaquil, Ecuador. 
TRIVIA SOLANDRI Gray. 
1832. In Sowxrpy, Con. IIL., p. 15, pl. 7, fig. 48. Santa Barbara 
Islands, California, and south to Panama and Peru. 
Genus ERATO Risso. 
ERATO (ERATOPSIS) SCABRIUSCULA Gray. 
832. In SowrrBy, Con. Ill., Cyprea, fig. 45; Thes. Con., 
Erato, p. 81, pl. 210, figs. 14-16, 1859. Cape St. Lucas, Lower 
California, and southward to Peru. 
