COLUBER. 335 



deep; one or two prgeoculars; temporals 1+2 or 2+2; upper 

 labials 9, fourth, fifth, and sixth entering the eye ; 5 lower labials 

 in contact with the anterior chin-shields, which are as long as the 

 posterior or a little longer. Scales in 19 rows, the 9 to 11 middle 

 rows feebly keeled in the adult, smooth in the young. Veutrals 

 with a lateral keel, 198 to 206 ; anal entire or divided ; subcaudals 

 100-107. Uniform bright green above ; upper lip and lower sur- 

 face yellowish or greenish white. 



Total length 3 feet ; tail 9 inches. 



Hob. Khasi Hills, Assam, Upper Burma. 



Except in its coloration this snake agrees so closely with C. 

 radiatus and melanurus that 1 cannot regard it as generically 

 distinct, and still less refer it to a different family. 



413. Coluber frenatus. 



Herpetrodryas ireiiatus, Gray, A. M. N. H. (2) xii, 1853, p. 390. 

 Gonyosoma freuatum, Gilnth. Rept. B. I. p. 295 ; Thcob. Cat. p. 190. 



Snout subacuniinate, twice as long as the eye, obliquely truncated 

 and projecting. Kostral a little broader than deep, hardly visible 

 from above ; suture between the internasals much shorter than 

 that between the praefrontals ; frontal as long as its distance from 

 the end of the snout, shorter than the parietals ; no loreal, prae- 

 froiital in contact with the labials ; one large prseocular ; two post- 

 oculars; temporals 2+2 or 2 + 3; 9 (or 8) upper labials, fourth, 

 fifth, and sixth entering the eye ; 5 lower labials in contact with the 

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

 in 1 9 rows, dorsals faintly keeled. Ventrals with a lateral keel, 

 203-204; anal divided; subcaudals 120-121. Uniform bright 

 green above ; a black streak along each side of the head, passing 

 through the eye ; upper lip and lower parts pale green, ventral 

 keel whitish. 



Total length 2 feet 9 inches ; tail 9'5 inches. 



Hal. Khasi Hills. 



414. Coluber oxycephalus. 



Coluber oxycephalus, Boie, Isis, 1827, p. 537. 



Herpetodryas oxycephalus, Schley. Phys. Serp. ii, p. 189, pi. vii, figs. 



8 & 9 ; Cantor, J. A. S. B. xvi, 1847, p. 927. 

 Alopecophis chalybeus, Gray, A. M. N. H, (2) iv, 1849, p. 247. 

 Gonyosoma oxycephalurn, l>um. $' Bibr. Erp. G6n. vii, p. 213 ; 



Giinth. Kept, B. I. p. 294 ; Jan, Icon. Ophid. 31, pi. i ; Stoliczka, 



J. A. 8. B. xxxix, 1870, p. 193, and xlii, 1873, p. 123; Theob. 



Cat. p. 189. 



Snout subacuminate, more than twice as long as the eye, obliquely 

 truncated and projecting. Rostral nearly as deep as broad, just- 

 visible from above ; suture between the interuasals much shorter 

 than that between the praefrontals ; frontal as long as its distance 



