60. COLTJBBR. 69 



Surv. B. Miss. R. x. pi. xxix, fig. 44 (1859) ; Jan, Icon. Gen. 22, pi. i. 



fig. 2 (1867) ; Garm. N. Am. Rept. p. 51 (1883) ; Bocourt, Miss. 



So. Mex., Rept. pi. xlvii. fig. 5 (1888) : Gunth. Biol. C.-Am., 



Rept. p. 125 (1894). 

 Churchillia belloua, Baird §• Gir. in Stansbury'a Expl. Great Salt 



Lake, p. 350 (1852). 

 Pituophis affinis, Sallow. Proa. Ac. Philad. 1852, p. 181. 

 bellona, Baird 8f Gir. I. c. p. 66, and Rep. Explor. Surv. R. 



Miss. R. X. pi. xxix. fig. 46 ; Bocourt, I. u. fig. 2. 



maoclellanii, Baird 1^ Gir. II. cc. p. 68, fig. 47. 



mexicanus. Bum. 8f Bihr. vii. p. 236, pi. Ixii. ; GUnth. Cat. 



p. 88 ; Bocourt, I. c. p. 674, pis. xlii. fig. 4 & xlvii. fig. 6. 

 sayi, Baird, Explor. Surv. R. Miss' R. x. pi. xxix. fig. 45 ; Cope, 



Proc. U.S. Nat. Mus. xiv. 1892, p. 640. 

 Pityophis catenifer, var. sayi, 2£. Garm. Bull. Illin. Bab. iii. 1892, 



p. 288. 



Snout projecting; rostral much deeper than broad, the portion 

 visible from ahove measuring one half to two thirds its distance 

 from the frontal ; prsefrontals broken up into four shields or more ; 

 frontal once and one third to once and two thirds as long as broad, 

 as long as or a little longer than its distance from the rostral; 

 parietals usually broken up behind ; loreal longer than deep ; one 

 large prseocular, sometimes with a small subocular below it ; two or 

 three postoculars and one or two posterior suboculars ; temporals 

 3 or 4 4- 4 or 5 ; eight or nine upper labials, fourth or fifth 

 entering the eye ; five or six lower labials in contact with the 

 anterior chin-shields, which are much longer than the posterior. 

 Scales in 29 to 35 rows, dorsals strongly keeled. Ventrals 209-239 ; 

 anal entire ; subcaudals 45-65. Yellowish or pale brown above ; 

 a dorsal series of large squarish, brown, black-edged spots ; sides with 

 small spots ; young with a dark band across the forehead, from eye 

 to eye, and another from the eye to the angle of the mouth ; some 

 or all of the labials with black sutures ; yellowish white inferiorly, 

 usually with brown spots. 



Total length 1480 millim. ; tail 190. 



North America and Mexico. 



a, b, c. c? (Sc. 31, 29, 29 ; Brit. Columbia. J. K. Lord, Esq. [P.]. 

 V. 218, 216, 215 ; 0.61, 

 62, 62). 



d. 2 (Sc. 31; V. 220; Medicine Hat, Assi- Prof. 0. Eigenmann 

 0. 53). niboia. [0.]. 



e. 2 (Se. 31; V. 221; Nebraska. -Smithsonian Instit. 

 0. 52). [P.]. 



f. 2 (Sc. 31: V. 229; New Mexico. Smithsonian Instit. 

 ■' 56). [P.]. 



a,h. 2 (Se. 35, 35 ; V. Duval Co., Texas. W. Taylor, Esq. [0.]. 



230 237 • 0. 47 47). 

 i. (J (Sc. 33; V. 230; Nuevo Leon. W. Taylor, Esq. [C.]. 



0. 45). 

 k,l. d (Sc. 31; V. 215; N.America. 



0. 67) & 2 (Sc. 33; 



V. 224 ; 0. 52). 



