Fames and Ranges of the Rattlesnakes 



All the large rattlesnakes and severa.1 of the small species 

 "belong to the genus Cro talus, of which 16 species or sulDspecies 

 (including 12 that are considered specifically distinct) are recorded 

 from the United- States in the 1933 Check List of North Imerican Reptiles, 

 tyDrs. Stejneger and Barhour. The characteristics distinguishing these 

 closely related rattlesnakes are too technical for presentation here. 

 The scientific and vernacular names and statement of the ranges of the 12 

 species follow: 



Crotalus adamant eus — Liaraondhack rattler . 



AoCTiit swamps from southern North Carolina to Florida and the Keys, 

 and westward to Louisiana and Arkansas. 

 Crotalus P-tro x — TTestern diamondhack rattler. 



Dry rocky places as well a,s agricultural districts from Texas and 

 northern Mexico to Arizona; Colorado and southern California; and 

 Lovfer California. 

 Crotalus cerastes — Horned ra,t tie snake, or sidewinder. 



Sajads of desert plains in northeastern Lower California, southern 

 California, southv/estern UtaJi, southern Nevada, and Arizona. 

 Crotalus confluentus — prairie rattler (and other common names for more west- 

 ern forms). 



British Columhia to Lower California and eastward through the Great 

 plains from southern _ Canada., to Texas. 

 Crotalus exsul — Red rattlesnake. 



Southwestern California, Lower California, and islands in the C-ulf of 

 California. 

 Crotalus horridus — ^Banded, or timher, rattler. 



In woody and hilly districts from Maine to Georgia, westward through 

 Louisiana to the Gulf region of Texas, and northward through the 

 Mississippi Valley to southeastern Minnesota and adjacent TTisconsin. 

 C rotalus lepidu s — Green rattlesnake. 



Mountains from "border region of western Texas to southern New Mexico, 

 Arizona, and adjacent Mexico. 

 Crotalus mitchellii — Pallid, or "bleached, rattler. 



Aj'izona, Colorado Desert to southern Lower California. 

 Crotalus molossus — Dog-faced rattler, or "black-tailed rattler. 



TTest from southern Texas to southern Arizona, and the highlands of 

 no r th e r n M exi c o . 

 Crotalus tigris — Tiger rattler. 



Southern California, southern Nevada, and southern Arizona. 

 Crotalus triseriatus — Spotted rattler. 



Licaritains of southern Arizona, and through the central plateau of Mexico 

 Crotalus yd Hard ! — Rattler. 



Santa Rita Mo^jJitain region, Arizona, and northern Mexico. 



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