1896.] BATRACHIANS OF THE MALAY PENINSULA. 869 
males were more plentiful than females. Of over twenty specimens 
examined, the largest male was 200 mm. in total length (H.B. 77, 
tail 123), and 86 mm. in extent across its extended ‘‘ wings”; and 
the largest female was 193 mm. in total length (H.B. 75, 
tail118). Some of the females contained four rich-yellow-coloured 
leathery-skinned eggs about 5 by 4 mm. 
Mr. Ridley found this species at the Dindings. 
Iife-coloration.—In Cantor’s description he does not mention 
the differences between the male and female; in my specimens I 
found these both noticeable and constant. 
Male. Front part of upper surface of head sea-green, with a 
black spot between the eyes. General colour of upper surfaces 
light bronze-brown, mottled all over with spots and patches of 
rich red-brown, dark brown, and black; in some lights fugitive 
metallic green shades are seen. Some of the markings are more 
definite than others: these are a median black spot on the nape 
of the neck, a cluster of black spots in front of the shoulders, two 
broken transverse black bands across the body, and a pair of black 
spots in front of hips. 
Under surfaces of head, body, and limbs are brownish-buff 
minutely spotted with dark brown, and metallic green shades are 
frequent and vivid. The gular pouch is brilliant yellow. 
Tail bronze- brown with rings of dark brown. 
‘Wing-membrane—of the upper surface the portion nearest the 
body is of the same light bronze-brown as the back, mottled with 
dark brown, beyond this the ground-colour is orange-red, and the 
markings get larger and darker, till towards the margin they 
coalesce and the light ground-colour cannot be seen. Round the 
margin of the parachute is a narrow border of light brown speckled 
with black. The under surface varies from pale cobalt to bright 
blue, with pink patches and large bars and dots of black. 
Female. Differing from the male as follows :— 
(i.) Front part of upper surface of head very dark brown or 
grey (black spot as in male). 
(ii.) The gular pouch is blue or green, minutely speckled with 
lack. 
(ili.) Where the ground-colonr of tle upper surface of the wing- 
membrane is orange-red in the male, it is rich yellow in the 
female. 
(iv.) The under surface of the wing-membrane is greenish- 
yellow, there are no pink patches, and the black bars and 
spots are larger. 
These Lizards when at rest on the trunk of a tree, usually in a 
vertical position, are almost invisible, owing to their dark mottled- 
brown colour, but when darting through the air overhead they 
resemble a flashing blue gem, owing to the bright colours of the 
underneath of the “ wings.” ‘They are very active and nimble, 
spreading their parachute as they leap from any point, and alight- 
ing gently on all fours closing it as they touch the ground. They 
