40 



Head depressed, snout rounded; nostril between two nasals; 

 frontal as long as its distance from the rostral; praeocular large; 

 two postoculars, upper one largest; a small supraocular, smaller 



Fig. 20. Xenopcllis unicolor Reinw. X V2- tapper view of head. 



than the upper postocular; a large, azygous interparietal, in 

 the middle of four parietals; eight upper labials, first in contact 

 with the internasal, fourth and fifth entering the eye; a pair 

 of small chin-shields, in contact with the three 

 anterior lower labials. Scales in 15 rows, smooth; 

 ventrals 164 — 193; anal divided; subcaudals 

 26—31. 



Brown or blackish above, iridescent, the scales 

 light-edged; upper lip pale yellow. Lower surface 

 white. In young specimens the head is whitish 

 and a yellow collar is present. Length of head and 

 body 900 mm.; tail 100 mm. 



Nom. indig. Ular ekor merak; Soratu (Sima- 

 i-'ig- 21. AVw-lur); Ulen tana (C. Celebes). 



Habitat: Simalur!; Nias!; Sumatra (Pulu 



Weh!, Atjeh, Medan !, Labuan, Langkat, Indra- 



giri, Singkarah!, Rau, Gunung Sahilan !, Agam, 



Ringgat!, Padang!, Palembang!); Siak !; Riou!; 



Banka!; Java (Gadok, Buitenzorg !, Preanger, Salatiga !, Tengger 



Mts. 1200 M.); Borneo! (Kuching, Singkawang, Kapuas river, 



Kutei, Bulangan river, Balikpapan, Bandjermassin) ; Celebes 



peltis unicoloy 

 Reinw. Head of 

 young specimen. 



X 2V2- 



