REPTILES OF THE PACIFIC COAST. 



193 



postoculars, and a Joreal are present. Temporals are 2-3 

 or 2-4. The scales are smooth, in twenty-seven to thirty- 

 one rows. The anal plate is single. Urosteges are in 

 two series. The eye is moderately large, with round 

 pupil. 



62. — A.rizona elegans Kennicott. Faded Snake. 



Arizona elegans, Kenn., U. S. Mex. Bound. Surv., II, 1859, Kept., 

 p. 18, pi. XIII (type locality Rio Grande); Bocourt, Miss. Sci. 

 au Mex., Kept., lie Livr., 1888, p. 676, pi. XLVI, figs. 3-3b. 



Pityophis elegans. Cope, Bull. U. S. Nat. Mus., No. 1, 1875, p. 39. 



Rhinechis elegans. Cope, Proc. Am. Philos. Soc, XXIII, 1886, p. 284; 

 Cope, Proc. U. S. Nat. Mus., XIV, 1891 (1892), p. 638. 



Coluber arizonce, Boulenger, Cat. Suakes Brit. Mus., II, 1894, y>. 66. 



Description. — Head flat-topped or slightly rounded, 

 with snout projecting and rather narrow. Temporal re- 

 gions not swollen. Rostral plate very large, prominent, 

 recurved between internasals on top of snout, and 

 bounded behind by internasal, anterior nasal, and first 

 labial plates. Plates on top of head, a pair of inter- 

 nasals, a pair of prefrontals, a frontal, supraocular of 



each side, and a pair of large parietals. Anterior and 

 posterior nasals usually distinct, but sometimes united 

 above nostril. Loreal elongate. One or two preoculars 

 and two or one postoculars. Temporals normally two 

 followed by three, or 2-4, lower scale of first row often 



