226 G. A. BOULENGER ON 
longer than broad ; prefrontals forming an extensive suture ; frontal a little shorter 
than its distance from the end of the snout, 13 times as long as broad, narrower be- 
hind than in front ; parietals 13 times as long as broad ; interparietal 14 to 1% times 
as long as broad, separated from the very small occipital by the parietals meeting 
in the middle. 4 supraoculars, first very small, second longer than the third, fourth 
small but larger than the first ; 3 superciliaries, first and second elongate ; a complete 
series of granules between the supraoculars and the superciliaries. Nasal usually 
forming a suture with its fellow behind the rostral' and in contact with the anterior 
loreal above the postnasal, unless its posterior portion be detached to form a second 
postnasal ;* anterior loreal as long as or shorter than the second ; 4 upper labials’ 
anterior to the subocular, which is not or but little narrower beneath than above. 
Temporal scales very small, granular, obtusely keeled, 12 on a line between the orbit 
and the tympanum; a feebly enlarged anterior upper temporal; a very narrow 
tympanic shield. 
4 pairs of chin-shields,* the 3 anterior in contact in the middle. 22 to 24 gular 
scales in the median line, anterior granular and faintly keeled, posterior increasing in 
size, imbricate, keeled, and merging gradually into the plates of the very distinct 
collar, which are pointed, keeled, and Io to 12 in number. 
Dorsal plates obtusely pointed or rounded behind, in 7 or 8 longitudinal series 
on the body, the median smaller.’ Ventral plates obtusely pointed and mucronate, 
very strongly keeled, in 6 longitudinal and 27 or 28 transverse series. 2 or 3 series 
of keeled scales on the side above the ventral plates, separated from the dorsals by a 
broad granular area. 28 to 32 plates and scales round the middle of the body. 
Preeanal plate rather larger,” bicarinate, with one or two smaller keeled plates on each 
side. 
Upper surface of limbs with rhombic keeled scales. A single femoral pore on 
each side. Subdigital lamelle single, or partly single and partly paired, 24 under 
the fourth toe. 
Caudal scales strongly keeled and shortly mucronate, in subequal whorls, the 
fourth containing 12 or 14 scales. 
Bright green above ; a white streak along each side, from the upper lip to the 
groin, passing below the tympanum and along the upper half of the outer row of 
ventral plates, continued on the base of the tail. Limbs and tail often reddish. 
One of the specimens described by Van Denburgh has a dark red-brown band along 
the side, from the eye, just above the white streak, to the tail, where it spreads over 
the upper surface. Lower parts white. 
Rostral in contact with the frontonasal in 2 specimens out of 51 examined by Van Denburgh. 
2 As in one of the two specimens here described. 
$5 in the type specimen described by Van Denburgh. 
+ 5 in one specimen, 3—¥4 in another, according to Van Denburgh. 
5 According to Van Denburgh, there are usually two median series of small plates anteriorly and one posteriorly, or 
3—-2—1, 2—1—0, 1 throughout, or 1—o. One specimen has only 1 row of large plates on each side of the back, separated 
by about 7 rows of smaller, irregular plates 
5 Iyxceptionally divided, according to Van Denburgh 
