266 COLUBRID®. 
14. Contia torquata. 
aed episcopa torquata, Cope, Bull. U.S. Nat. Mus. 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, pl. xviii. fig. 1 
(1875); Garm. N. Am. Rept. p. 92 (1883). 
cay isozona, Cope, Bull. U.S. Nat. Mus. no. 17, p. 21 
80). 
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 internasals 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 pre- 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. 2 (V. 159; C. 50). Fort Yuma, Arizona. Hr. A. Forrer [C.]. 
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. Rept. p. 21, pl. xxi. fig. 1 
eae Bocourt, Miss. Se. Mex., Rept. p. 558, pl. xxxiv. fig. 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, Garm. 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 pre- 
frontals ; frontal not once and a half as long as broad, broader than 
the supraoculars, longer than its distance from the end of the 
