N. A. KEPTILES AND BATRACHIANS. 35 



(D) Caudisona mitchellii Cope, 1861, Pr. Phil. Ac., 293. 



Lower California. 



(E) Gaud, enyo Cope, 1. c.,293. 



Lower California. 

 Crotalus exsul Grmn., 1883, Mem. M. C. Z., Rept., 114. 



Cedros Island. 

 C. horridus Linn., 1758, Syst., I, 214. 



New England to Texas. 

 C. cerastes Hallow., 1854, Pr. Phil. Ac., 95. 



California; Arizona; Mexico. 

 PCaudisona lepida Kenn., 1861, Pr. Phil. Ac., 206. 



Mexico. 



Crotalus tigris (Kenn.) Bd., 1859, Mex. Bound., II, Kept., 14, 

 pi. 4. 



Mexico. 

 C. triseriatus Wiegra., 1828, Mus. Berl. 



Mexico. 

 (B) C. jimenezii Duges, 1879, La Naturaleza, IV, 23. 



Mexico. 



SISTBURUS Grmn., 1883, Mem. M. C. Z., Kept., 110, 118, 176. 

 Crotalinus catenatus Raf., 1818, Am. Month. Mag., IV, 41. 



Ohio and Michigan to the Plains and south to Missis- 

 sippi. 

 (B) Crotalophorus censors B. & G., 1853, Serp., 12. 



Texas. 



Crotalus miliariusLinn., 1766, Syst., I, 372. 

 Southern States. 



(B) Crotaloph. edwardsii B. & G., 1. c., 15. 



Texas; Arizona; Sonora; Mexico. 



(C) Crotalus ravus Cope, 1865, Pr. Phil. Ac., 191. 



Mexican plateau. 



Crotalus intermedius Fisch., 1881, Abh. Nat. Ver. Brem., 

 VII, 230, pi. XIV, f. 1-4. 

 Mexico. 



ANCISTRODON Pal. de Beauv., 1799, Trans. Am. Phil. Soc., IV, 

 381. 

 Coluber contortrix Linn., 1758, Syst., I, 216. 



Mississippi valley to New England. 

 (B) Acontias atrofuscus Troost., 1836, Ann. N. Y. Lye., 



181. Mountains from Virginia southward. 

 Crotalus piscivorus LaC., 1789, Quad. Ovip. Serp., II, pp. 

 130, 424. 



South Carolina to Texas. 



