54. ZAMEXIS. 39^ 



labials in contact with the anterior cliin-shields ; posterior chin- 

 shields a little longer than the anterior, and separated from each 

 other by scales. Scales smooth, in 17 rows. Ventrals obtusely 

 angulate laterally, 184-190; anal divided; subcaudals 127-135. 

 liody pale brown anteriorly with black cross bands ; the greater 

 part of the body black, with three yellowish longitudinal bands ; 

 head yellowish brown above, the shields edged with black ; a black 

 band along each side of the head, passing through the eye, con- 

 nected with its fellow by a black band across the occiput ; lower 

 parts uniform yellowish. 



Total length 1220 millim. ; tail 400. 



Mexico. 



a. 6 (V. 188 ; C. ?). Mexico. M. Sall^ [C.]. 



b. Ilgr. (V. 184; Tierra Colorado, Guerrero. Mr. H. H. Smith [C.]; 

 C. 127). F. D. Godman, Esq. [P.]. 



12. Zamenis grahami. 



Salvadora grahamiae, Baird ^- Gir. Vat. X. Am. Rept. pp. 104, 161 

 (1853), and U.S. Mex. Bound. Siirv. ii., Bept. p. 21, pi. v. fig. 2 

 (1859); Jan, Icon. Gen. 1, pi. iii. rig. 1 (1860); Giinth. Ann. Sf 

 Mag. N. H. (3) xii. 1863, p. 349; Garm. N. Am. Bept. p. 38 

 (1883) ; Bocourt, Miss. 8c. Mex., Bept. p. 661, pi. xliii. tig. 2 

 (1888) ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 619. 



bairdi, Jan, I. c. fig. 2 ; Bocourt, I. c. p. 662, tig. 3 ; Duges, 



La Natumleza, (2) i. 1888, p. 124; Cope, I. c. 



Phimothvra grahamias, Cope, Proc. Ac. Philad. 1861, p. 300, and 

 1883, p. 14. 



balrdii, Cope, I. c. 



hexalepis, Cope, Proc. Ac. Philad. 1866, p. 304. 



Snout projecting, truncate. liostral deeper than broad, its 

 lateral borders more or less distinctly detached, the portion visible 

 from above as long as or a little shorter than its distance from the 

 frontal ; internasals as long as the prtofrontals ; frontal a little 

 broader than the supraocular, once and two thirds to twice as long 

 as broad, longer than its distance from the end of the snout, as long 

 as the parietals ; loreal a little longer than deep, sometimes with 

 one or two detached ones below ; one praeocular (rarely two), not 

 in contact with the frontal, with a small subocular below it ; two or 

 three postoculars ; temporals 1 + 2, 2 + 2, or 2 + 3 ; eight or nine 

 upper labials, fourth and fifth or fifth and sixth * (rarely filth or 

 sixth only) entering the eye; four lower labials in contact with the 

 anterior chin-shields ; posterior chin-shields as long as or shorter 

 than the anterior, and separated from each other by scales. Scales 

 smooth, in 17 rows. Ventrals obtusely angulate laterally, 175-20G; 

 anal divided ; subcaudals 75-108. Above with two dark olive 

 stripes, separated by an orange, yellow, or pale olive one ; a nar- 

 rower dark olive lateral streak ; head brown above ; the dark bands 



* Spec, a has eight labials on the left .side and nine on the right ; spec, g 

 has nine on both sides ; the other specimens in the collection have eight labials. 



