71 



nuchal crest. Dorsal scales irregular, keeled, the largest at least 

 twice as large as the ventrals; a lateral series of large, keeled, 

 widely separated scales. I'ail one time and a half the length 

 of head and body, without a crest. The fore limb extends beyond 

 the tip of the snout, the hind limb reaches the elbow of the 

 fore limb or not so far. 



Fig. 43. Draco volans L. (^ About one third of the tail figured. 



Light brown above, with metallic gloss and spots and undu- 

 lated transverse bands of reddish-brown or blackish-browm ; a 

 black spot on the head between the orbits and one on the 

 nape; membranes in the males orange above and blue below, 

 in the females yellow above and greenish-yellow below, marbled 

 with black or with irregular transverse bands. Lower parts 

 greenish-yellow; throat variegated with black; gular sac yellow 

 or orange in the male, green or bluish in the female, also 

 variegated with black. Length of head and body 85 mm.; 

 tail 135 mm. 



Nom. indig. Tjitjak terbang (mal.); Tjekiber; Bidadari; 

 Apam apam (Simalur). 



Habitat: Simalur!; Pulu Babi!; Nias!; Mentawei Islands 

 (Sipora) ; Sumatra (Upper Langkat, Battak Highlands 800 — 

 1000 M., Taluk!, Kaju tanam!, Muara Labu!, Padang 1500 — 

 3000 feet, Medan-Deli ! , Indragiri, Tandjung Laut, Palem- 

 bang!); Natuna Islands (Pulu Laut); Banka; Biliton; Java 



