60. COLUBER. 69 
Surv. R. Miss. R. x. pl. xxix. fig. 44 (1859) ; Jan, Icon. Gén, 22, pl. i. 
fig. 2 (1867); Garm. N. Am. Rept. p. 51 (i883); Bocourt, Miss. 
Sc. Mex., Rept. pl. xlvii. fig. 5 (1888); Giinth. Biol. C-Am., 
Rept. p. 125 (1894). 
Churchillia bellona, Baird § Gir. in Stansbury’s Expl. Great Salt 
Lake, p. 859 (1852), 
Pituophis affinis, Hallow. Proce. Ac. Philad. 1852, p. 181. 
— bellona, Baird § Gir. l.c. p. 66, and Rep. Explor. Surv. R, 
Miss. R. x. pl. xxix. fig. 46; Bocourt, l.c. fig. 2. 
— macclellanii, Baird § Gir. ll. cc. p. 68, fig. 47. 
mexicanus, Dum. § Bibr. vii. p. 2386, pl. lxii.; Giinth. Cat. 
p- 88; Bocourt, l. c. p. 674, pls. xlii. fig. 4 & xlvii. fie. 6. 
sayl, Baird, Explor, Surv. R. Miss. R. x. pl. xxix. fig. 45; Cope, 
Proc. US. Nat. Mus. xiv. 1892, p. 640. 
Pityophis catenifer, var. sayi, HZ. 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; prafrontals 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 preocular, sometimes with a small subocular below it ; two or 
three postoculars and one or two posterior suboculars; temporals 
3 or 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. 3 (Sc. 31, 29, 29; 
V. 218, 216, 215; C.61, 
62, 62). 
Brit. Columbia. J. K. Lord, Esq. [P.]. 
d. 2 (Se. 81; V. 
C. 53). 
Medicine Hat, Assi- 
niboia. 
Prof. C. EHigenmann 
ROR]: 
Smithsonian Instit. 
e. 9 (We. 31; V. 221; Nebraska. 
C. 52). al. 
f. 2 (Se. 31; V. 229; New Mexico. Smithsonian Instit. * 
C. 56). (eal 
Is LU Ry Se V. Duval Co., Texas. W. Taylor, Esq. (C.]. 
230, 237; C. 47, 47). 
i. 3 (Se. 33; V. 230; Nuevo Leon. W. Taylor, Esq. [C.]. 
C. 45). 
k,l. 3 (Sc. 31; V. 215; N. America. 
C. 57) & 2 (Sc. 38; 
V. 224; C. 52) 
