( 173 ) 



down each side of the back, separated by five scales, and a lower 

 narrower band, separated by two scales from the last. A black 

 streak from the eye to gape. 



Grows to 37 inches. (Tail 9 or longer.) 



Inhabits Sikkim. 



Giinther described from a single specimen. A second from 

 which I have taken some details of colouration was in the pos- 

 session of A. Grote, Esq., and another in the Museum of the 

 Asiatic Society, Bengal. (See Catalogue, J. A. S., B., 1868, 

 p. 54.) 



Tropidonotus, Kulil. 



Head distinct from the neck. Eye moderate. Pupil round. 

 Nostril lateral between two plates. Shields of head regular. 

 Loreal one. Anal bifid. Scales generally keeled, usually 17 — 19 

 rows, sometimes more. 



T. punctulatus, Giinther. 



Eye large. Prseocular one. Postoculars three. Prsefrontals 

 small and pointed. 9 upper labials, the fourth and fifth entering 

 the orbit. Scales smooth in 15 rows (on the neck in 17). 

 Colour very variable. Adult males above dark umber, beneath 

 white, the two colours sharply separated. Upper labials white. 

 A dark line down each side formed by the dark tips of the ven- 

 trals and the hind part of each lowest row of scales. Adult 

 females light brown, much mottled with yellow, which some- 

 times predominates. 



Inhabits Pegu. 



T. zebrinus, Blyth. J. A. S., B., 1855, p. 295. 



One prseocular, three postoculars. Labial plates with a trian- 

 gular black spot at the upper junction of each pair. Colour 

 above plumbeous, obscurely black spotted. The sides and under 

 parts yellowish white, the former throughout banded with black, 

 each band with a white spot above. Two or three distinct black 

 bands across the nape. Described from a young specimen of 

 10*4 inches. 



Inhabits Mergui. 



