SNAKES FROM DEHLI. 21 



or broader. Our single specimen has 141 ventrals, a divi- 

 ded anal and 28 pairs of caudals. 



Anterior frontals very small , smaller than one of the post- 

 oculars , vertical elongate , supraciliaries nearly as long as 

 the vertical. Two postoculars , one praeocular very high , 

 reaching the vertical with its upper angle. Loreal large, 

 bordered by the praeocular, the posterior frontal and four 

 or five upper-labials. Nasal pentagonal, with the nasal 

 opening nearly in the middle and a groove running from 

 the neighbourhood of that opening towards the side bor- 

 dered by the first upper-labial. 



upper-labials high , the first four or five undivided , 

 the hinder ones divided into two or three by transverse 

 sutures. There is a longitudinal groove between the upper 

 labials and the shields above them. Along the cleft of the 

 mouth there are nine upper-labials on the right side , and 

 ten on the left. Twelve lower-labials are present on each 

 side, the anterior two of each side meeting those of the 

 other side behind the mental, the posterior ones are divi- 

 ded into two shields by a longitudinal groove. Three pairs 

 of chin-shields, the anterior very large and broad, resem- 

 bling those 0Ï Hypsirhina Bocourti Jan ^). The following pair 

 small, the last pair nearly resembling ordinary scales. The 

 lower pairs of chin-shields do not reach one another but 

 are separated by seven scales. 



Upper parts blackish brown with narrow stripes of a yel- 

 low colour ascending along the sides and reaching the mid- 

 dle of the back, mostly not joining those of the other side 

 but alternatively arranged. Posterior upper-labials yellow. 

 The three outer series of scales yellow with some small dark 

 spots detached from the dark upper parts; belly and under 

 part of the head yellow, except the mental and the six ante- 

 rior labials which are brownish , under part of the tail yel- 

 low with the margins of the subcaudals dark , these dark 

 margins forming a zig-zag line along the middle of the tail. 



1) Jan, 1. c, livraison 26, pi 5, fig. 2. 



Notes from the Leyden IVIuseutu , Vol. XII. 



