266 



COLUBEIDJ?. 



14. Contia torquata. 



Contia episcopa torquata, Cope, Bull. U.S. Nat. Mm. no. 17, 1880, 

 p. 21. 



Like C. episcopa, but ventrals 183. Subcaudals 38. Ground- 

 colour light yellow tinged with, brown above ; three median dorsal 

 rows of scales orange ; top of head, from anterior border of frontal 

 to end of parietals, black ; a black cross band on the nape ; some- 

 times a dark stripe along each side of the body ; lips and below 

 immaculate. 



N.W. Texas. 



15. Contia Isozona. 



Contia isozona, Cope, Proc. Acad. Philad. 1866, p. 304; Yarrow, 

 Wheeler's Rep. Explor. W. 100th Mer. v. p. 637, pi. xviii. fig. 1 

 (1875) ; Garm. N. Am. Sept. p. 92 (1883). 



episcopa isozona, Cope, Bull. U.S. Nat. Mus. no. 17, p. 21 



(1880). 



Rostral a little broader than deep, the portion visible from above 

 measuring about half its distance from the frontal ; nasal un- 

 divided ; suture between the intemasals shorter than that between 

 the preefrontals ; frontal longer than its distance from the end of 

 the snout, shorter than the parietals ; a small loreal, longer than 

 deep ; one prse- and two postoculars ; temporals 1 -|- 2 ; seven upper 

 labials, third and fourth entering the eye ; three lower labials in 

 contact with the anterior chin-shields ; posterior chin-shields very 

 small and separated by a scale. Scales in 15 rows. Ventrals 158- 

 167 ; anal divided ; subcaudals 50-52. Orange above, with black 

 cross bands ; tail with complete annuli ; loreal and postocular 

 region, posterior half of frontal and supraoculars, and anterior half 

 of parietals black ; sides and lower surface whitish. 



Total length 250 millim ; tail 50. 



Utah, Nevada, Arizona, Texas. 



a. 5 (V. 159 ; C. 50). Fort Yuma, Arizona. Hr. A. Forrer [0.]. 



16. Contia occipitalis. 



Rhinostoma occipitale, Hallow. Proc. Ac. Philad. 1854, p. 95. 

 Lamprosoma occipitale. Hallow. Proc. Ac. Philad. 1856, p. 110; 



Baird, U.S. Mex. Bound. Surv. ii. Pept. p. 21, pi. xxi. iig. 1 



(1859) ; Bocourt, Miss. So. Mex., Rent. p. 558, pi. xxxiv. fiff. 6 



(1883). 

 Chionactis occipitalis. Cope, Check-List N. Am. Rept. p. 35 (1875), 



and Proc. U. S. Nat. Mus. xiv. 1892, p. 605. 

 Contia occipitalis, Oarm. N. Am. Rept. p. 91 (1883). 



Rostral a little broader. than deep, the portion visible from above 

 about half as long as its distance from the frontal ; nasal undivided ; 

 suture between the internasals shorter than that between the prae- 

 frontals ; frontal not once and a half as long as broad, broader than 

 the supraoculars, longer than its distance from the end of the 



