CHECKLIST OF THE SNAKES OF MEXICO 77 



in Mexico from the states of Campeche, Chiapas, and Veracruz ; prob- 

 ably occurs also in northern Oaxaca and in Tabasco). 



IMANTODES SPLENDIDUS OLIVERI Smith 



Imantodcs splendidus oliveri Smith, Proc. U. S, Nat. Mus., vol. 92, 1942, pp. 388- 

 390 ; vol. 93, 1943, pp. 436-437. 



Ti/pe.— Mus. Comp. Zool. No. 27800. 



Type locality. — Tapanatepec, Oaxaca. 



Range. — Pacific lowlands from western Chiapas northwestward 

 probably to Nayarit (definite records are available only from Chiapas 

 and Oaxaca ; probably referable is a record from Colima and another 

 from Nayarit). 



IMANTODES TENUISSIMUS Cope 



Himantodes tenuissimus Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, 1866 

 (1867), pp. 317-318. 



Tmantodes tenuissirnus Haktweg and OLn'EE, Misc. Publ. Mus. Zool. Univ. Michi- 

 gan, No. 47, 1040, p. 24. 



Imantodes gemmistratus Schjiidt and Andkew^s (nee Cope), Publ. Field Mus. 

 Nat. Hist., zool. ser., vol. 20, 1936, pp. 177-178. 



Type.— U.S.^.M. No. 6563. 

 2'ype locality. — Yucatan. 



Range. — Yucatan Peninsula (known only from a few localities in 

 Campeche, Quintana Roo, and Yucatan). 



Genus LAMPROPELTIS Fitzinger 



Lampropcltis Fitzingee, Systema reptilium, 1843, p. 25. — Blanchabd, U. S. Nat. 

 Mus. Bull. 114, 1921, pp. 1-260, figs. 1-78 (generic revision). — Smith, Proc. 

 Rochester Acad. Sci., vol. 8, 1942, pp. 190-207, pi. 1 (brief summary of Mexi- 

 can members of the triangulum group). 



Bellophis Lockington, Proc. California Acad. Sci., vol. 7, 1876, p. 52 (type, B. 

 zoMitus Lockington=Co?ii&er zonatus Blainville). 



Oreophis Dug^s, Proc. Zool. Soc. London, 1897, pp. 284-285 (type, 0. toulengeri 

 Dug^s= Ophibohis triangulns mexicmnts Garman). 



Genotype. — Herpetodryas getulus Schlegel. 



Range. — Extreme southern Canada (western part only) through 

 most of the United States, Mexico, and Central America into South 

 America. 



fSpecies. — In all, 43 species and subspecies are known, 24 of which 

 occur in Mexico. 



KEY TO MEXICAN FORMS OF LAMPROPELTIS 



1. Pattern of very narrow, widely separated cross bands of black, some of 



the bands usually mixed or split with red altema 



Pattern not as described above 2 



2. Pattern without red, of two colors (black or brown, and white) 3 



Pattern with red, of three colors 9 



584960 — 45 G 



