DRACO 57 



IV, Nostrils perfectly vertical ; upper head- 

 scales very small ; 11 to IG upper labials ; 

 gular appendage of male covered with 

 small scales. 



A. Tympanum exposed; snout shorter than 



orbit. 

 Hind limb reaching axilla or shoulder ; gular 



appendage of male not or but little longer 



than head D. microlepis, p. 62. 



Hind limb reaching axilla or not quite so far : 



gular appendage of male much longer than 



head D. viela7iopu(jon, p. G2. 



B. Tympanum covered with scales; snout 



at least as long as orbit. 

 One or two transverse series of scales between 



nasal shield and rostral ; no enlarged scale 



above tympanum; gular appendage of male 



much larger than head D. quinquefasciatus, 



Three (rarely two) transverse series of scales [p. 63. 



between nasal shield and rostral ; a large 



pointed scale above tympanum ; gular ap- 

 pendage of male not more than once and 



a half length of head D. nutAimus, p. 63. 



52. Draco volans. 



Journ. Htraits Br. Asiat. Soc. No. 32, p. 191 (1899) ; Laidlaw, 

 P.Z. S. 1901, i, p. 307. 



Head small ; snout not or but scarcely longer than diameter 

 of orbit ; nostril lateral, directed outwards ; tympanum naked. 

 Upper head-scales very unequal, strongly keeled; a more or less 

 distinct A-shaped series of enlarged scales on forehead ; a small 

 subcouical tubercle at posterior corner of orbit; 7 to 10 upper 

 labials. Male's gular appendage longer than head. Male with a 

 small nuchal crest. Dorsal scales irregular, keeled, largest at 

 least twice as large as veutrals ; a lateral series of distant 

 enlarged scales. Fore limb extending beyond tip of snout, bind 

 limb reaching elbow of adpressed fore limb, or not quite so far. 

 No caudal crest. Light bronze brown above, with metalhc 

 reflections, and with spots and patches of reddish brown, dark 

 brown, and black ; a black spot between the orbits and another 

 on the nape; wing-membranes orange above and blue beneath in 

 the male, rich yellow above and greenish 3^ellow beneath in the 

 female, with black spots and marblings or irregular cross-bands ; 

 thioat speckled with black ; gular appendage yellow or orange in 

 the male, blue or green iu the female. 



From snout to vent 85 millim. ; tail 125. 



Malay Peninsula, Lower 8iam, Sumatra, Natuna Islands, 

 Borneo^ Palawan, Java, Celebes. Common in open plantations 



