SYSTEMATIC ACCOUNT OF THE SPECIES. 145 
Top of head with two curved frontal ridges which converge anteriorly and 
inclose a shallow frontal depression; head-scales-including those of the supra- 
ocular dise all strongly keeled; supraocular semicircles separated by a single 
row of scales, three of which are elongate and elevated to form a short median 
ridge; occipital about the size of the ear opening and separated from the supra- 
ocular semicircle by two or three rows of scales; supraocular dise composed of 
eight polygonal keeled scales, separated from the semicircle by a single row of 
very small granules, polygonal or elongate scales; canthus rostralis composed 
of few scales, one extremely elongated in the middle of the series, flanked by 
other less elongate on either side; superciliary ridge consisting of one very long 
anterior shield, followed by a number of much smaller scales; loreal rows, five; 
subocular semicircle strongly keeled; supralabials six, suture between fourth 
and fifth being about under centre of eye; temporal scales small and granular, 
bordered above by a rather irregular zone of enlarged scales, which extends 
from the posterior border of the orbit to a point some distance above the ear 
opening; dorsals small, flat, smooth, showing no tendency to imbricate, a median 
zone consisting of from three to four series of enlarged more or less distinctly 
keeled scales; this zone commences at about the region of the fore limbs; ven- 
trals much larger than dorsals, imbricate and distinctly but’ not strongly keeled; 
fore limbs above with rows of very strongly keeled and enlarged scales, similar 
seales present an anterior aspect of thighs; subdigital expansions feebly devel- 
oped consisting of about 18 lamellae under phalanges II and III of the fourth 
toe. Tail strongly compressed with about fifteen evident verticils along its 
proximal region; such verticil is separated by about seven vertical rows of 
keeled scales; upper edge feebly serrate, each segment with four small spines; 
dewlap very Jarge and capable of great dilation, extending along the midventral 
line to a point considerably posterior to the line of the axillae; a very few feebly 
enlarged postanal scales; no dorsal fold. 
Colour (in life): — Grayish or reddish brown, variously clouded or spotted 
with blotches and many bands of dark brown or black, belly pale ashy or green- 
ish; dewlap fine lustrous maroon. 
Dimensions: — Total length 143 mm. 
Tip of snout to vent 58 mm. 
Vent to tip of tail 85 mm. 
Tip of snout to ear 17 mm. 
Width of head 10.5 mm. 
Fore leg 26 mm. 
Hind leg 46 mm. 
