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R EPTILIA: SERPENTES: CROTALIDAE ^ ^ ^ AGKISTRODON 



Prepared by Howard K. Gloyd, University of Arizona, Tucson, Arizona 

 AGKISTRODON Palisot de Beauvois 



1759 Agk istrodon Palisot de Beauvois, Trans. Amer. Phil. Soc, 4: 381. Type-species: Agkistrodon 



mokasen Palisot de Beauvois. 

 1755 Agk ishodon Palisot de Beauvois (typographical error), Trans. Amer. Phil. Soc, 4: 37O. 



1802 Scytale Latreille, in Sonnini and Latreille, Hist. Nat. Rept., 3: I58. Type-species: 



contortr i x Linnaeus. 



1803 Cenchris Daudin, Hist. Nat. Rept., 5: 356. Type-species: Cenchris mokeson Daudin. 

 I8I9 Scytalus Rafinesque (emendation of Scytale Latreille), Amer. Jour. Sc i . , 1: 84. 



1826 Tisiphone Fitzinger, Neue Classification der Reptilien: 34. Type-species: Tisiphone cuprea 



F i tz i nger. 

 I83O Ancistrodon Waqler (emendation of Aakistrodon Palisot de Beauvois), Nat. Syst. Amphib.: I76. 

 I836 Acontias Troost (preoccupied by Acont ias Cuvier, 182?), Ann. Lyc. Nat. Hist. New York, 3: I76. 



Type-species: Acont ias leucostoma Troost. 

 I836 Toxicophis Troost (substitute name for Acontias Troost, I836), Ann. Lyc. Nat, Hist. New York, 3: 



190. 

 1843 Hypnale Fitzinger, Systema Reptilium: 28. Type-species: Coph ias hypnale Merrem. 

 1849 Halys Gray, Cat. Sn. Brit. Mus. : 14. Type-species: Tr iqonocephalus halys Boie. 



Distribution: Central and southern Asia south of 5^th Parallel, from Caspian Sea to and Including 

 Sakhalin, Japan and islands to south, and Taiwan (but not Hainan); south to northern Iran, 

 Peninsular India and Ceylon, and Tonkin (North Vietnam). United States from southeastern 

 Nebraska and southeastern Iowa southwest to Trans-Pecos Texas and south to Gulf of Mexico near 

 Corpus Christi Bay and northern Florida, northeast to Massachusetts; Mexico and Central America, 

 from southern Sonora and Nuevo Leon south to Yucatan, Guatemala, and Pacific Coast of Nicaragua. 



Content: Approximately eleven species; about eight in Asia and three in New World, of which all but 

 one are extral i m i tal. 



AGKISTRODON BILINEATUS (Cunther) 



I863 Ancistrodon bilineatus Gunther. Ann. Mag. Nat. Hist., (3) 12: 364. Type-locality: Pacific coast 



of Guatemala. 

 1899 Aak i strodon b i 1 i nea tus — Stejneger, North American Fauna, 14: 7I. 

 1943 Agk i strodon bill nea tus — Gloyd and Conant, Bull. Chicago Acad. Sci., 7= 1^3, figs. 4, 11-12. 



Distribution: Tamaulipas, Mexico on Atlantic slope and southern Sonora on Pacific slope to 



Nicaragua. Records in British Honduras have been questioned by Allen and Neill, Herpetolog ica, 

 15, 1559, 229. 



Content: Two subspecies, one of which ( taylor i Burger and Robertson) is ex tral i m i tal. 



Aok i strodon bill nea tus b il i neatus (Gunther) 



1951 Aqkistrodon bilineatus bilineatus — Burger and Robertson, Univ. Kansas Sci. Bull., 3*' 214, 

 pi. 25, fig. 3. 



Distribution: Nicaragua, Guatemala, and possibly British Honduras to southern Sonora on 



Pacific slope and to Campeche and Yucatan Peninsula on Atlantic slope of Mexico; Tres Marias 

 I slands. 



