50 COLUBRIDJE. 



rye ; lower parts yellow, with square brown spots, which are few 

 anteriorly and numerous posteriorly. 



Total length 700 millim. ; tail 125. 



South-eabtern United States and Mexico. 



a. rf (Sc. 29; V. 220; C. 72). Mexico. 



C. rosaceus, Cope, is probably a colour-variety of this species. 



23. Coluber obsoletus. 



Coluber obsoletus, Say, in Long's JZrped. Rocky M. i. p. 140 (1823) ; 



llarl. Journ. Ac. Philad. v. 1827, p. 347, and Med. Phys. lies. 



p. 112 (1836) ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. (i:M ; 



Hay, Batr. Of Kept. Indiana, p. 93 (1893). 

 alleghaniensis, Holbr. N. Am. Herp. p. Ill, pi. xx. (1836), and 



2nd ed. iii. p. 85, pi. xix. (1842) ; Dekay, N. York Faun.. Kept. 



p. 36, pi. xii. fig. 20 (1842). 

 quadrivittatus, Holbr. op. cit. 2nd ed. iii. p. 89. pi. xx. ; Giinth. 



Cat. p. 88 (1858). 

 Scotophis alleghaniensis, Baird Sf Gir. Cat. N. Am. Rent. p. 73 



(1868). 



lindheimeri, Baird fy Gir. 1. c. p. 74. 



Elaphis quadrivittatus, Dum. $ Bibr. vii. p. 265 (1854) ; Garm. N. 



Am. Rept. p. 66 (1883). 



spiloides, Dum. < Bibr. t. c. p. 269. 



holbrookii, Dum. fy Bibr. t. c. p. 272. 



alleghaniensis, Hallow. Proc. Ac. Philad. 1856, p. 243 ; Jan. 



Icon. Gen. 24, pi. ii. fig. 1 (1867). 

 Coluber spiloides, Giinth. I. c. p. 90. 



Scotophis obsoletus, KenniciM, Proc. Acad. Philad. 1860, p. 330. 

 Coluber lindheimerii, Cope, Check-List N. Am. Rept. p. 39 (1875). 

 Elaphis obsoletus, Garm. 1. c. p. 54 (1883) ; H. Garm. Bull. Illin. 



Lab. iii. 1892, t>. 290. 



Pantherophis lindheimeri, Garm. Butt. Essex Inst. xxiv. 1892, p. 108. 

 alleghaniensis, Garm. I. c. 



Rostral broader than deep, just visible from above ; internasals 

 broader than long, much shorter than the praefrontals ; frontal a 

 little longer than broad, as long as its distance from the rostral, 

 shorter than the parietals ; loreal longer than deep ; one prae- and 

 two postoculars; temporals 2+3; eight upper labials, fourth and 

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

 the anterior chin-shields, which are as long as the posterior. Scales 

 very distinctly keeled, in 25 to 29 rows. Ventrals obtusely angulate 

 laterally, 217-245 ; anal divided ; subcaudals 72-93. Brown to 

 black above ; young with a series of large dorsal dark spots and 

 two lateral series of smaller alternating spots, which may disappear 

 or be replaced by four dark stripes. 



Total length 1360 millim. ; tail 310. 



United States east of the llocky Mountains. 



A. Nearly uniform black above and on the posterior two thirds of 

 the lower parts. (C. obsoletus, Say.) 



. d CSc. 27 ; V. 233 ; N. America. Lord Ampthill PP.! 



C. 80). 



