376 COLUBEID^, 



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, 

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

 tail moderate ; subcaudals in two rows. 



Distribution. 8even or eight species are known, from the East 

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



Si/iio2^sis of Indian and Burmese Sjjecies. 



Scales in 19 rows H. phonbea, p. 376. 



Scales in 21 rows //. vnhydris, p. 376. 



Scales in 25 rows //. hlunfordii, p. 377. 



Scales in 21) or 31 rows II. nichohUi, p. 377. 



460. Hypsirhina plumbea. 



lloiualopsis plumbea, Boic, Isis, 1827, p. 560 ; Cantor, J. A. S. B. 



xvi, 1847, p. 948. 

 llypsirliina liavdwickii, Gray, III. Ind. Zool. ii, pi. Ixxxvii, fig. 1. 

 Hypsirhina plumbea, Gr(a/, ZooL Misc. p. ^^) ; GiintJi. Bept. B. I. 



p. 280 ; Jan, Icon. Ophi'd. 30, pi. v, fig. 2 ; Thcoh. Cat. p. 182. _ 

 Eurostus plumbeus, Dam. i)- Bihr. 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 + 2 : 

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

 lower labials in contact \\\\\\ the anterior chin-shields, Avhich are 

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

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

 uniform or \\-ith a vertebral series of small black spots : upper lip 

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

 of the tail. 



Total length 15 inches ; tail 3. 



Hah. Burma, Southern China, liido-China, Malay Peninsula and 

 Archipelago. 



407. Hypsirhina enhydris. 



Bussed, Ind. Sarp. i, pi. xxx. 



Ilydrup enhydris, Schncid. Hist. Ainpli. i, p. 245. 



Homalopsis olivaceus, Cantor, P. Z. *S'. 1839, p. 55. 



Hypsirhina trilineata, bilineata, and furcata, Grai/, Zool. Misc. 



■p. 06. 

 Homalopsis enhydiis, Cantor, J. A. 6'. B. xvi, 1847, p. 946. 

 Hypsirhina enhydris, Dum. S,- Bihr. Erp. Gen. vii, p. 940 ; GiinfJi. 



"^Iicpf. B. I. p'. 2S1, ph xxii, lig. K; Jan, Icon. Ophid. 30, pi. iii, 



fig. 2, & pi. V, fig. 1 ; Theoh. Ccd. p. 183. 



Eostral much broader than deep ; internasal single ; frontal 

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



