14 
A. Alcock— New species of Flying Lizard from Assam. [No. 1, 
goons, which are as already stated on the north-east, north or north-west 
sides of the lagoon. 
According to Dana * the waves with the rising tide dashing over 
the windward side of the reef, tends to keep open a leeward channel for 
the passage of the water. This is evidently not the case in the Lacca¬ 
dives, as the channels are generally on the weather side, but the position 
varies considerably without any apparent reason. 
On a new species of Flying Lizard from Assam.—By A. Alcock, M.B., 
C.M.Z.S., Superintendent of the Indian Museum. 
With Plate III. 
[Received 15th October—Read 7th November.] 
Draco norvillii , n. sp. 
Nostril nearly vertical. Tympanum scaly and hidden. The wing- 
membranes with three broad scarlet bands : the lateral gular folds 
scarlet beneath. 
Head one-fourteenth to one-fifteenth of the total length. Snout 
hardly longer than the diameter of the orbit. 
Nostrils tubular : pierced at an angle of about 17° from the vertical. 
Tympanum scaly and hidden. A scaly knob at the posterior angle 
of the orbit. Upper head-scales unequal, keeled : nine upper labials. 
Gular appendage of the male a little longer than the head, broadly 
foliaceous, and covered with large thin scales : much resembling that of 
D. blanfordii. Nuchal fold just distinguishable. Dorsal scales small, 
smooth, unequal ; not, or not much, larger than the keeled ventrals. In 
the lateral series of enlarged scales there are not more than ten on 
either side, and these are very irregularly disposed, and have, most of 
them, tag-like keels. The forelimb stretched forward reaches beyond 
the tip of the snout by almost the length of the hand. The adpressed 
hind-limb reaches to the axilla. 
Colours in spirit on the dorsal aspect : lichenous-mottled ; with 
shades of dull metallic blue predominating on the crown of the head and 
on the posterior thoracic region ; and with shades of dull purplish brown, 
with well defined black spots, on nape, neck, shoulders, and anterior 
thoracic region : wing-membranes beautifully reticulated mottled and 
speckled at base, and traversed by three dull red cross-bands, which are 
darkest near the edge. Of these cross-bands the most anterior extends 
* Corals and Coral islands, James Dana, page 211. 
