COLUBER. 335 



deep; one or two prseoculars ; 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, ^\•hich 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. Yentrals 

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

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

 face yellowish or greenish white. 



Total length 3 feet ; tail 9 inches. 



Hah. 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 diiJerent family. 



413. Coluber frenatus. 



Ilerpetrodvyas frenatus, Grai/, A. M. X. H. (2) xii, 1803, p. 300. 

 Gonyosoma freiiatum, Giinth. Hept. B. I. p. 295 ; Thvob. Cat. p. 190. 



Snout subacuminate, 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 prtcfrontals ; frontal as long as its distance from 

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

 frontal in contact with tlie labials ; one large prseocular ; two post- 

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

 ii.fth, and sixth entering tlie eye ; 5 lower labials in contact with the 

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

 in 1] 9 rows, dorsals faintly keeled. A'entrals with a lateral keel, 

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

 greeu 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. 



Hah. Khasi Hills. 



\ 



414. Coluber oxycephalus. 



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



Hei-petodi'vas oxvcephalus, Schler/. PJii/s. Serp. ii, p. 189, pi. vii, figs. 



8 & 9 ; ^Cantor, J. A. S. B. x\i, 1847, p. 927. 

 ' 'Alopecopbis chalybeus, Grai/, A. M. N. H. (2) iv, 1849, p. 247. 

 Gonyosoma oxycephidum, i>um. &,• Bibv. Erp. Gen. vii, p. 213; 



Giinth. Rept. B. I. p. 294 ; Jan, Icon. Ophid. 31, pi. i ; Stoliczku, 



J. A. S. 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 betw^een the internasals much shorter 

 than that between the praef rentals ; frontal as long as its distance 



