42 REPTILIA. 



Draco volans (Gray, Cat. Brit. Mus.). 

 Draco Daudiuii (Dum. et Bib.). 



Var. A. — Colour — above ; coppery brown, mottled in different 

 shades — below ; whitish brown, with a metallic gloss, blueish gray 

 down the centre of the belly ; the chin and, in some specimens, the 

 flanks being faintly marked with transverse dark mottled lines; 

 when fresh, the flying membranes or wings are brilliant crimson ; 

 this colour becomes dull orange-red in specimens preserved in 

 spirits ; the w4ng is fringed at the outer edge with brown, within 

 which is a margin of large black spots ; the surface of the membrane 

 is also transversely spotted with black. On the head, between the 

 eyes, is a large rounded black spot, and on the nape is an oval spot 

 of the same colour ; three fainter and smaller spots also occur about 

 half way down the neck in a transverse position. 



Var. B. — Instead of the brown colour with which the former 

 variety is marked, this Draco is mottled with light and very dark 

 green, the markings also being more distinct. 



In the brown varieties the pouches on the sides of the throat are 

 marked and prominent, while below the throat the pendant pouch 

 is wanting, the skin being merely enlarged and wrinkled. In the 

 green variety the lateral pouches are as in Var. a. and the gular 

 pouch is very large, pendant and pointed, and of a yellow colour. 

 Tail very slender. 



Both the varieties agree in their comparative dimensions, and the 

 dimensions of one (Var. b.) are as follows : — 



Total length, 7 inches 2i lines. 



Length of tail, 4 inches 4 lines. 



„ of ear to end of muzzle, 6 lines. 



The gular wattle depends from the throat, G lines. 



These beautiful little Lizards are frequently met with in 

 Labuan, and sometimes keep together in companies of six or 

 seven. When on the wing they might also be almost mis- 

 taken for large butterflies ; though they move their wings, how- 

 ever, their flight never rises, but is always to a lower point. 

 They rest upon the trunks of trees, tail downwards, and while 

 at rest the yellow fold of skin under the throat is frequently 

 inflated, giving them a very odd appearance. The IMalays 

 are much afraid of them, believing them to be venomous, and 

 assert that they will bite men in the back of the neck, causing 

 death. 



Gen. Gonyocephalus. 



Gonyocephalus chameleontina (Gray, Cat. Brit. Mus.). 

 Lophyrus tigrinus (Dum. et Bib.). 



