G94 NORTH AMERICAN SNAKES COPE. 



This is not tbe C durisstis of Linn, as supposed by various authors. 

 That tbe latter name applies to the South American species is shown 

 by the description given by Linnams Syst. Nat. Ed.xii, 1766, p. 572. 



Crotalus cerastes Hallow. ^'■ 



Crotalus cerastes Hollowell, Proc. Acarl. Nat. Sci., 1854, Phila., p. 95; Hallowell, 

 IJ. S. Pac. R. R. Expl. Report, 1859 ; Williamson's Rept. Reptiles, p. 17 ; Baird, 

 U. S. and Mex. Bound. Surv., 1859, Reptiles, p. 14; Cope Check List N. Amer. 

 Batr., 1875, Rept. 33. 



Crotalus {JEchmoplirijs) cerastes Cones, Report U. S. G. G. Surv. W. of lOOth Mer., 1875, 

 p. 609. 



Arizona. 



Crotalus mitchellii Cope. 



Crotabis mitcheUH Cope, Proc. Acad. Pbila., 1861, p. 293, Check List, N. Amer. Batr. 

 Rept., Cope, 1875, p. 33 ; Cope ; Yarrow in Report U. S. Geol. G. Surv. W. of 100th 

 Mer., 1875, p. 535. 



Lower California ; southern California. 



Crotalus pyrrhus Cope. 



Caudisona pyrrlia Cope, Proc. Acad. Phila., 1886, pp. 308-310; Coues, U. S. G. 6. 



Surv. W, of 100th Mer., 1875, p. 608. 

 Crotalus pyrrlius Copo., U. S. G. G. Surv. W. of 100th Mer., 1875, p. .535, PI. xxii; 



Check List, Batr., Rept. N. Amer., p. 33. 



Arizona ; Lower (jaliforuia, (Angel Id. teste Yarrow). 



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