166 COLUBRID^. 



labials ; 3 lo\^er labials in contact m ith the anterior chin-shields, 

 which are not longer than the posterior. Scales in 19 rows. 

 Ventrals 260-284 ; anal divided ; subcaudals 52-64. Blackish 

 above, with white transverse bands which widen towards the 

 abdomen ; some white spots on the head ; lower parts white, with 

 greyish spots, the continuation of the dorsal bands ; these bands 

 may form complete rings on the tail. 



Total length 1220 miUini, 



Mouth of the Mouhnein Eiver, Burma ; Prov. Wellesley,^ 

 Selaugor, Singapore ; Borneo. 



A very rare snake, only a few specimens being preserved in 

 Museums. 



Genus HIPISTES. 



Gray, Cat. Sn. p. 77 (1849). 



Maxillary teeth 8 or 9, followed, after a short interspace, by a 

 pair of slightly enlarged groo\ed teeth. Head small, not distinct 

 from neck ; eye minute, with vertically elliptic pupil ; head-shields 



Fig. 52. — Head of Hipi»ffs Injdrhvus. 



small, parietals broken up into numerous shields ; nostril a trans- 

 verse slit between two nasals ; a single interuasal, separating the 

 nasals ; a loreal. Body elongate, slightly compressed ; scales 

 smooth, without pits, juxtaposed or subimbricate, in 35 to 43 

 rows; ventrals nai-row, with two sharp keels. Tail short, feebly 

 compressed; subcaudals in two rows. 

 A single species. 



181. Hipistes hydrinus. 



Ho7nalopsis hyclrina, Cantor, Journ. A slat. Soc. Bengal, xvi, p. 95ir 

 pi. xl, fig. 4 (1847). 



