228 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 37. 



CYPRiEA NIGROPUNCTATA Gray. 



1828. Zool. Journ., vol.4, p. 81.— Sowerby, Con. 111., Ci/pra^a, 

 fig. 22, 1832. Mauta, Ecuador, south to Paita, Peru (Chile, 

 Hidalgo), and the Galapagos Islands. 



CYPR^A ROBERTSI Hidalgo. 



1906. Mon. Cyprasa, pp. 161, 220. — C. punctulata.^ Gray, Zool. 

 Journ., vol. 1, p. 387, 1824; not of Gmelin, Syst. Nat., p. 

 3404, 1791.— Sowerby, Con. 111., Cyprsea, pi. 4, fig. 20, 1832. 

 Gulf of California to Paita, Peru. 



Family TRIVIID.E. 

 Genus TRIVIA Gray. 



TRIVIA ACUTIDENTATA Gaskoin. 



1835. Proc. Zool. Soc, p. 201.— Button, Nautilus, vol. 19, p. 

 132, 1906. (Unfigured.) Guayaquil and the Galapagos 

 Islands. 



TRIVIA FUSCA Gray. 



1832. In Sowerby, Con. 111., fig. 37. Mazatlan to Guayaquil 

 and the Galapagos Islands. 



TRIVIA PACIFICA Gray. 



1832. Proc. Zool. Soc, p. 185. — Sowerby, Thes. Con. Cyprsea., 

 p. 45, pi. 34, figs. 441, 443, 1859. Gulf of California to 

 Panama and the Galapagos Islands. 



TRIVIA PULLA Gaskoin. 



1846. Proc. Zool. Soc, p. 24; 1848, p. 97.— Sowerby, Thes. 

 Con., Cyprxa, p. 48, pi. 26. figs. 490, 491, 1859. Gulf of 

 California to Guayaquil and the Galapagos Islands. 



TRIVIA RADIANS Lamarck. 



1810. Gypvcea radians Lamarck, Ann. du Mus., vol. 16, p. 

 102.— Sowerby, Con. 111., pi. 119, fig. 146, 1837. Gulf of 

 California to Peru and Chile and the Galapagos Islands. 



TRIVIA RUBESCENS Gray. 



1832. Proc. Zool. Soc, p. 185. — Sowerby, Con. 111., Cypriea, 

 fig. 31, 1832. Gulf of California to Panama and the Galapagos 

 Islands. 



TRIVIA SANGUINEA Gray. 



1832. In Sowerby, Con. 111., p. 13, fig. 32. Gulf of California 

 to Guayaquil, Ecuador. 



TRIVIA SOLANDRI Gray. 



1832. In Sowerby, Cop. 111., p. 15, pi. 7, fig. 43. Santa Barbara 

 Islands, California, and south to Panama and Peru. 



Genus ERATO Risso. 



ERATO (ERATOPSIS) SCABRIUSCULA Gray. 



832. In Sowerby, Con. 111., Gyprsea^ fig. 45; Thes. Con., 

 Erato, p. 81, pi. 210, figs. 14-16, 1859. Cape St. Lucas, Lower 

 California, and southward to Peru. 



