190 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



Type.— v. S. N. M. No. 53586. 



Type locality. — Colima. 



Range. — The west coast from central Sinaloa to central Oaxaca 

 (recorded from the states of Colima, Jalisco, Michoaciin, Oaxaca, and 

 Sinaloa; it may occur [^^Crotalus sp."] on Maria Magdalena Island 

 of the Tres Marias Islands ; numerous other records for other states 

 cannot be accepted). 



CROTALUS CERASTES LATEROREPENS Klauber 



Crotalus cerastes laterorepens Klatjber, Trans. San Diego Soc. Nat. Hist., vol. 10, 

 1944, pp. 94-100, pi. 5, fig. 2, map. 



Type.—L. M. Klauber Coll. (San Diego, Calif.) No. 34074. 



Type locality. — The Narrows, San Diego County, Calif. 



Range. — "The desert areas of central and eastern Riverside, north- 

 eastern San Diego, and Imperial counties in California ; northeastern 

 Lower California, Mexico, from San Francisquito bay north ; north- 

 western Sonora, Mexico; and Yuma, Maricopa, Pinal and Pima coun- 

 ties, Arizona" (Klauber) . 



CROTALUS DURISSUS DURISSUS Linnaeus 



Crotalus durissus Linnaetjs, Systema naturae, ed. 10, vol. 1, 1758, p. 214. 



Crotalus durissus dicrissus Klauber, Occ. Pap. San Diego Soc. Nat. Hist., No. 1, 

 1936, p. 4.— Gloyd, Spec. Publ. Chicago Acad. Sci., No. 4, 1940, pp. 12)2-131, 

 map 8, pi. 16, fig. 2.— Klauber, Bull. Zool. Soc. San Diego, No. 17, 1941, pp. 

 81-95. 



Type. — Not known. 



Type locality. — America. 



Range. — "Southern Mexico, exclusive of the highlands of the Mexi- 

 can Plateau, from central Michoacan through Guerrero and Oaxaca 

 to Veracruz, Chiapas, Campeche, and Yucatan; the more arid regions 

 of central America through Guatemala, Salvador, Honduras, the west 

 coast of Nicaragua and Costa Rica" (recorded from the Mexican 

 states of Campeche, Chiapas, Guerrero, Michoacan, Morelos, Oaxaca, 

 Quintana Roo, Tabasco, Veracruz, and Yucatan ; it may occur in the 

 Balsas Basin of southwestern Puebla but has not been so recorded). 



CROTALUS DURISSUS TOTONACUS Glojd and Kauffcid 



Crotalus totonacus Gloyd and Kauffeld, Bull. Chicago Acad. Sci., vol. 6, 1940, 

 pp. 12-14, figs. 1, 2.— Gloyd, Spec. Publ. Chicago Acad. Sci., No. 4, 1940, pp. 

 149-151, pi. 17. 



Type. — Chicago Acad. Sci. No. 4469. 



Type locality. — Panaco Island, near Cabo Rojo, Veracruz, 



Range. — Known definitely only from the type locality. 



CROTALUS ENYO (Cope) 



Caudisona enyo Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 13, 1861, p. 294. 

 Crotalus enyo Cope, U. S. Nat. Mus. Bull. 1, 1875, p. 33.— Gloyd, Spec. Publ. Chi- 

 cago Acad. Sci., No. 4, 1940, p. 225, map 19, pi. 27, fig. 2. 



