i8i 



the posterior; these are separated by scales. Scales in 19 rows; 

 ventrals 125 — 152; anal divided; subcaudals 24 — 36. 



Purplish-brown above, with indistinct light transverse bars, 

 the first on the occiput. Lower surface yellowish, with black 

 transverse bands or large, alternating black spots. Total length 

 465 mm. 



Habitat: Sumatra (Deli!); Banka!; Borneo (Kuching); Java!. 



2. Hypsirhina plumbea (Boie). 



Homalopsis plunibca^ Boie, Isis 1827, p. 560. 



Hypsirhina plunihca^ Boulenger, Cat. Sn. Ill 1896, p. 5 (s. syn.). 



Rostral more broad than deep; a single internasal (some- 

 times two), more broad than long; frontal as long as its distance 

 from the tip of the snout, shorter than the parietals; loreal 

 in contact with the internasal; one prae- and two postoculars; 

 temporals i -(- 2; eight upper labials, fourth or fourth and 

 fifth entering the eye; four or five lower labials in contact 

 with the anterior chin-shields; posterior chin-shields shorter, 

 separated from one another. Scales in 19 rows; ventrals 1 17 — ^139; 

 anal divided; subcaudals 29 — 47. 



Brownish or greyish above, uniform or with a median series 

 of black spots; upper lip white. Lower surface white, generally 

 with a dark line along the middle of the tail and sometimes 

 with dark spots or black dots on the median line of the belly. 

 Length of head and body 420 mm.; tail 65 mm. 



Habitat: Sumatra (Atjeh, Labuan, Medan!, Langkat!, 

 Serdang!, Raja Mts., Bedagei, Palembang); Java (Batavia, 

 Semarang, Salatiga!, Malang!, Kediri!); Borneo (Labuan, Sama- 

 rinda!, Bandjermassin); Celebes! (Manado!, Kema, Kandari, 

 Tempe!, Macassar!, Lamontjong). — Penang; Malay Peninsula; 

 Siam; Indo China; S. China; Burma. 



3. Hypsirhina enhydris (Schn.). 



Hydyus enhydris^ Schneider, Hist. Aniph. I 1799, p. 245. 

 Hypsirliina cnliydris^ Boulenger, Cat. Sn. Ill 1896, p. 6 (s. syn.). 



Rostral twice as broad as deep; a single internasal, about 

 twice as broad as long; frontal broader than the supraocular, 

 as long as or shorter than its distance from the tip of the 

 snout, as long as the parietals; loreal in contact with the inter- 

 nasal; one prae- and two (one) postoculars; temporals 1+2; 



