390 C0LUBRIDJ5. 



Herpetodryas psammophis, Schleg. Phys. Serp. ii. p. 195 (1837), and 



Abbild. pi. xliv. fi^s. 21-24 (1844). 

 Psainmophis flagelliforniis, Holbr. N. Am. Herp. (2ncl ed.) iv. p. 11, 



pi. ii. (1842). 

 flavigularis, Halloiv. Proc. Ac. Philad. 1852, p. 178, and in 



Sitgreave's Exped. Zuni Si- Colorado Riv. p. 131, pi. xi. (1853). 

 Masticophis flagelliformis, Baird ^- Gir. Cat. X. Am. Rept. p. 98 



(1853) ; Jan, Icon. Gen. 20, pi. vi. (1867). 

 flavigularis, Baird 8f Gir. I. c. p. 99, and in Marci/s Explor. 



i?erfi?u'. p. 230(1853). 

 Herpetodryas flagelliformis, Dum. S^- Bibr. vii. p. 210 (1854) ; Giinth. 



Cat. p. Il8 (1858). 



flavigularis, part., Giinth. I. e. p. 118. 



Drymobius flagelliformis, Cope, Proc. Ac. Philad. 1360, p. 561. 



testaceus, Cope, I. c. 



Bascanium flagelliforme. Cope, Check-List N. Am. Rept. p. 40 



(1875), and Proc. U.S. Nat. Mns. xiv. 1892, p. 625. 

 flagelliforme bicinctum. Yarrow, Proc, U.S. Nat. Mus. v. 1888, 



p. 153. 

 ? Bascanium piceum. Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 625. 



Snout rather prominent. Tlostral nearly as deep as broad, the 

 portion visible from above one third or one half as long as its 

 distance from the frontal ; internasals much shorter than the prae- 

 frontals ; frontal not, or but slightly, broader than the supraocular, 

 once and a half to once and tvro thirds as long as broad, as long as 

 or a little longer than its distance from the end of the snout, as long 

 as or slightly shorter than the parietals ; loreal nearly as long as 

 deep or deeper ; one prseocular, with a subocular below it ; two 

 postoculars ; temporals 2 + 2 or 2 + 3; eight upper labials, fourth 

 and fifth entering the eye ; four or five lower labials in contact with 

 the anterior chin-shields ; posterior chin-shields as long as or longer 

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

 smooth, in 17 (or 19 ?) rows. Ventrals obtusely angulate, 182- 

 211 ; anal divided; subcaudals 80-112. Yellowish brown to black 

 above, yellow inferiorly ; gular and anterior ventral regions usually 

 with two brown or reddish stripes or series of spots. 



Total length 1700 millim. ; tail 380. 



Southern United States and North Mexico. 



a. S (V. 187 C, 112). Brownsville, Texas. Smithsonian Instit. 



[P.]. 

 b-c. 2 , skin (V. 199 ; Duval Co., Texas. W. Taylor, Esq. 



C. 92), & head. [C.].' 



d. c? , skin (V. 194 ; Texas. 

 C. 109). 



e. Yg., akin (V. 182 ; Nuevo Leon. W. Tavlor, Esq. 

 C. 107). [C.]. 



/". 5 (V. 202; C. 110). N.America. E. Doubleday,Esq. 



[P.]- 



9. Zamenis taeniatus. 



Leptophis t^niata, Hallow. Proc. Ac. Philad. 1852, p. 181, and in 

 Sitgreave's Exped. Zuni ^ Colorado Riv. p. 133, pi. xii. (1853). 



