376 COLTJBBIDJE. 



elliptical pupil; head-shields large; nasal semidivided, the cleft 

 extending from the nostril to the first labial, in contact behind the 

 rostral ; internasal single or divided ; loreal present. Body stout, 

 cylindrical ; scales smooth, in 19 to 31 rows, without apical pits : 

 tail moderate ; subcaudals in two rows. 



Distribution. Seven or eight species are known, from the East 

 Indies and Southern China. Four occur in India and Burma. 



Synopsis of Indian and Burmese Species. 



Scales in 19 rows II. plumbea. p. 370. 



Scales in 21 rows H. f-raAwfrftg, p. 376. 



Scales in 25 rows H. blanfordii, p. 377. 



Scales in 29 or 31 rows H. sieboldii, p. 377. 



466. Hypsirhina plumbea. 



Horualopsis plumbea, Boie, Isis, 1827, p. 560 ; Cantor, J. A. S. B. 



xvi, 1847, p. 948. 



Hypsirhina hardwickii, Gray, III. Ind. Zool. ii, pi. Ixxxvii, h'g. 1. 

 Hypsirhina plumbea, Gray, Zool. Misc. p. 06 ; Gilnth. Kept. B. I. 



p. 280 ; Jan, Icon. Ophid. 30, pi. v, tig. 2 ; Theob. Cat. p. 182. 

 Eurostus pluinbeus, Dum. fy Bibr. Erp. Gen. vii, p. 955, pi. Ixxxiv, 



fig. 2. 



Rostral much broader than deep; internasal single; frontal 

 much longer than broad, as long as its distance from the end of the 

 snout, a little shorter than the parietals ; loreal as long as deep or 

 deeper than long ; one prse- and two postoculars ; temporals 1 -j- 2 ; 

 upper labials 8, fourth or fourth and fifth entering the eye ; 4 or 5 

 lower labials in contact with the anterior chin-shields, which are 

 larger than the posterior. Scales in 19 rows. Ventrals 120-134 ; 

 anal divided ; subcaudals 29-46. Brownish or greyish olive above, 

 uniform or with a vertebral series of small black spots ; upper lip 

 and lower parts white, usually with a black line along the middle 

 of the tail. 



Total length 15 inches ; tail 3. 



Hob. Burma, Southern China, Indo-China, Malay Peninsula and 

 Archipelago. 



467. Hypsirhina enhydris. 



Russell, Lid. Serp. i, pi. xxx. 



Hydrus enhydris, Schneid. Hist. Amph. i, p. 245. 



Ilbmalopsis olivaceus, Cantor, P. Z. S. 1839, p. 55. 



Hypsirhina trilineata, bilineata, and furcata, Gray, Zool. Misc. 



p. 66. 



Honialopsis enhydris, Cantor, J. A. S. B. xvi, 1847, p. 946. 

 Hypsirhina enhydris, Dum. Sf Bibr. Erp. Gen. vii, p. 946 ; GiintJi. 



Rept. B. I. p. 281, pi. xxii, fig. K; Jan, Icon. Ophid. 30, pi. iii, 



fig. 2, & pi. v, fig. 1 ; Theob. Cat. p. 183. 



Rostral much broader than deep ; internasal single ; frontal 

 nearly twice as long as broad, as long as its distance from the end 



