60. COLUBER. 69 



Sum. R. Miss. JR. x. pi. xxix. fig. 44 (1869) ; Jan, Icon. G6n. 22, pi. i. 



fig. 2 (1807) ; Garm. N. Am. Rept. p. 51 (1883) ; Bocourt, Miss. 



Sc. Mex., Rept. pi. xlvii. fig. 6 (1888) ; Gunth. Biol. C.-Am., 



p. li>o (1894). 

 Churchillia belloua, Baird Sf Gir. in Stansbury's Expl. Great Salt 



Lake, p. 3->0 (Is-iiM. 



Pituophis affiuis, Hallow. Proc. Ac. Philad. 1852, p. 181. 

 bellona, Baird Sf Gir. 1. c. p. 00, and Rep. Explor. Sure. R. 



Miss. R. x. pi. xxix. fig. 40 ; Bocourt, I. c. fig. 2. 



macclellauii, Baird fy Gir. II. cc. p. 68, fig. 47. 



mexicanus, Dum. 8f Bibr. vii. p. 230, pi. Ixii. ; Giinth. Cat. 



p. 88 ; Bocourt, 1. c. p. 674, pis. xlii. fig. 4 & xlvii. tig. 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, H. Garm. Bull. Illin. Lab. iii. 1892, 



p. 288. 



Snout projecting ; rostral much deeper than broad, the portion 

 visible from above measuring one half to two thirds its distance 

 from the frontal ; praefrontals 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; 

 parietal s usually broken up behind ; loreal longer than deep ; one 

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

 three postoculars and one or two posterior suboculars ; temporals 

 3 or 4 -f 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 e}'e 

 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. [PA 

 V. 218, 216, 215; C.61, 

 62, 



d. $ (Sc. 31; V. 220; Medicine Hat, Assi- Prof. C. Eigenmann 

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



e. $> (Sc. 31; V. 221; Nebraska. Smithsonian Instit 

 C. 5i>). [P.]. 



/. $ (Sc. 31; V. 229; New Mexico. Smithsonian Itistit. 



C. [P.]. 



g, h. $ (Sc. 35, 35 ; V. Duval Co., Texas. W. Taylor, Esq. [C.]. 



230,237; C. 47, 47). 

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



C.45). 

 *, /. S (Sc. 31; V. 215; N.America. 



C. 67) & $ (Sc. 33; 



V. -J4 ; C. 62). 



