138 

 I. Ablabes tricolor (Schlegel). 



Herpetodryas tricolor^ Schlegel, Phys. Serp. 1837, p. 187, pi. VI, fig. 16 — 18. 

 Ablabes tricolor^ Boulenger, Cat. Sn. II 1894, p. 281 (s. syn.). 



Snout long, depressed, two times as long as the diameter 

 of the eye. Rostral more broad than deep, visible from above; 

 nasal entire; internasals as long as or shorter than the prae- 

 frontals, which are in contact with the second and third labials; 

 no loreal; frontal as long as its distance from the tip of the 

 snout, shorter than the parietals, not broader than the supra- 

 ocular; one prae- and two postoculars; temporals 1+2; eight 

 upper labials, fourth and fifth entering the eye; four or five 

 lower labials in contact with the anterior chin-shields; latter 

 shorter than the posterior. Scales in 15 rows, smooth; ventrals 

 140 — 187; anal divided; subcaudals 103 — 137. 



Olive or greenish above; a black streak on each side of the 

 head and anterior part of the body, passing through the eye; 

 upper lip yellowish-white. Lower surface yellowish-white; a 

 pale olive streak along each side of the belly. Length of head 

 and body 340 mm.; tail 220 mm. 



Habitat: NiasI; Sumatra (Labuan, Deli, Asahan, Bunga 

 Maas); Banka!; Java (Buitenzorg!, Tengger Mts. 1200 M.); 

 Borneo (Matang, Montrado, Singkawang!, Pontianak). — Sin- 

 gapore; Penang; Malay Peninsula. 



2. Ablabss libertatis (Barbour). 



LiopcUis libertatis^ Barbour, Proc. Biol. Soc. Wash. XXIII 1910, p. 169. 



Rostral as broad as deep, visible from above; nasal divided; 

 internasals shorter than the praefrontals, which are in contact 

 with the supraoculars; frontal a little longer than its distance 

 from the tip of the snout, longer than the suture between 

 the parietals, broader than the supraocular; two loreals, the 

 anterior square, the posterior lower and narrower; one prae- 

 and two postoculars, upper twice as large as lower; temporals 

 2 + 2; eight upper labials, fourth and fifth entering the eye, 

 seventh largest; five lower labials in contact with the anterior 

 chin-shields; latter shorter than the posterior. Scales in 15 

 rows, smooth; ventrals 173; anal divided; subcaudals 109 (tip 

 of tail broken). 



Uniform slate colour above, lighter below. Length of head 

 and body? (After BarbouR; not seen by me). 



Habitat: Java (Buitenzorg). 



