surface yellow, uniform or the ventrals edged with black. Length 

 of head and body 860 mm.; tail 340 mm. 



Nom. indig. Ular tjahe (mal.). 



Habitat: Nias!; Mentawei Islands (Sipora) ; Sumatra 

 (Labuan, Deli!, Brastagei!, Assahan, Raja Mts. Indragiri, Kerta- 

 djaja in Palembang, Gunung Sugei in Lampong district, Gunung 

 Sahilan!, Taluk!, Ringgat!, Silago, Singkarah!, Kaju tanam!, 

 Indrapura, Rau, Kalung!, Matur!, Baso!, Sungei Pati Bubur 

 near Ajerbangis!, Padang 1500 — 3000 feet, Agam, Tandjong); 

 Banka; Borneo (Sandakan Bay, Baram river, Kina Balu, Bongon, 

 Sarawak, Kuching, Oya, Rejang river, Singkawang, Pontianak, 

 Telang, Lihong Bahaja, Samarinda!); Java (Buitenzorg!, Depok, 

 Preanger!, Gunung Ungaran!, Salatiga!, Ambarawa, Tengger 

 Mts. 1200 M.); Celebes (Macassar 2000 feet); Sangir Islands 

 (Siao); Ternate. ■ — Malay Peninsula; Penang; Singapore; Burma. 



16. Tropidonotus petersi Boulenger. 



Trop'idonotHs maailatus^ Peters, Mon. Berl. Ac. 1871, p. 575. 

 Tropidonoiiis petersi^ Boulenger, Cat. Sn. I 1893, p. 225. 



Eye moderate; rostral scarcely visible from above; inter- 

 nasals as long as the praefrontals; frontal as long as its distance 

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

 more deep than long; one prae- and three or four postoculars; 

 temporals 2-r3; nine upper labials, fourth to sixth entering 

 the eye; five lower labials in contact with the anterior chin- 

 shields; latter shorter than the posterior. Scales in 19 rows, all 

 strongly keeled; ventrals 140—150, anal divided; subcaudals 

 65-78. 



Brown above, with small black spots, on each side a series 

 of black spots; head dark olive, vermiculated with black; labials 

 yellow, with black sutures. Lower surface yellow, the shields 

 edged with black. Length of head and body 270 mm.; tail 

 100 mm. 



Habitat: Sumatra (Deli!); Borneo (Kuching, Saribas). 



17. Tropidonotus saraw^acensis Gunther. 



Tropidonotus sarawacensis^ Gunther, Proc. Zool. Soc. 1872, p. 596. 

 Tropidonotus saravaccnsis^ Boulenger, Cat. Sn. I 1893, p. 261. 



Head short; eye large; rostral not or just visible from above; 

 internasals as long as or slightly shorter than the praefrontals; 



