CHECKLIST OF THE SNAKES OF MEXICO 193 



CROTALUS MOLOSSUS MOLOSSUS Baird and Girard 



Crotalus molossus Baibd and GnuRD, Catalogue of North American reptiles, 



1853, p. 10. 

 Crotalus 7nolossus molossus Gloyd, Oce. Pap. Mus. Zool. Univ. Michigan, No. 325, 



1936, p. 2 ; Spec. Publ. Chicago Acad. Sci., No. 4, 1940, pp. 151-160, map 11, 



pi. 14. 



Type.—V.S.H^M. No. 485. 



Type locality. — Fort Webster, Santa Kita del Cobre, N. Mex. 



Range. — "From the Grand Canon, Arizona, and central New Mexico 

 south through Sonora, Chihuahua, and western Texas to southern Coa- 

 huila and south-central Nuevo Leon; and on San Esteban Island in 

 the Gulf of California" (recorded from the Mexican states of Chi- 

 huahua, Coahuila, Nuevo Leon, and Sonora). 



CROTALUS MOLOSSUS NIGRESCENS Gloyd 



Crotalus molossus nigrescens Gloyd, Occ. Pap. Mus. Zool. Univ. Michigan, No. 325, 

 1936, pp. 2-5; Spec. Publ. Chicago Acad. Sci., No. 4, 1940, pp. 161-16S, map 11, 

 pi. 15. 



Type.— Mus. Zool. Univ. Mich. No. 77833. 



Type locality. — Four miles west of La Colorada, Zacatecas. 



Range. — "Throughout the Mexican highlands from southern Chi- 

 huahua, northern San Luis Potosi and southern Nuevo Leon south 

 to northern Oaxaca and western Veracruz" (recorded from the states 

 of Chihuahua, Durango, Guanajuato, Jalisco, Miclioacan, Puebla, San 

 Luis Potosi, Veracruz, and Zacatecas, and from Distrito Federal; it 

 probably occurs in Aguascalientes, Hidalgo, Mexico, Morelos, Quer6- 

 taro, and Tlaxcala, but definite records from these states are not 

 available). 



CROTALUS OMILTEMANUS Gunther ' 



Crotalus omiltemanus Gxjntheb, Biologia Centrall-Americaiia, Rept., 1895, pp. 



192-193, pi. 58, fig. e. 

 Crotalus triseriatus omiltemanus Klauber. Copeia, 1988. No. 4, p. 198. — Gloyd, 



Spec. Publ. Chicago Acad. Sci., No. 4, 1940, pp. 95-96. map 6, pi. 8. 



Type.— Brit. Mus. Nat. Hist. 



Type locality. — Omilteme, Guerrero. 



Range. — The Sierra Madre del Sur in central Guerrero. 



CROTALUS POLYSTICTUS (Cope) 



Caudisona polysticta Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 17, 1865, 



pp. 191-192. 

 Crotalus poli/st ictus Cope, in Yarrow, Wheeler's Rep. Geogr. Geol. Expl. Surv. 



W. 100th Mer., vol. 5, 1875, p. 533.— Gloyd, Spec. Publ. Chicago Acad. Sci., 



No. 4, 1940, pp. 226-232, map 20, pi. 28. 

 Crotalus lugubris multimaculata Jan, Iconographie gen<§rale des ophidiens, livr. 



46, 1874, pi. 3, fig. 3 (type locality, Mexico; type, Westphal Coll. in Mont- 



pellier). 



^ See footnote, p. 196. 



