246 MR. G. A. BOULENGER ON [June 6, 
three; loreal rows five; six upper labials te below the centre of 
the eye; ear-opening rather small, vertically oval. Gular appendage 
very large, extending far back on the breast, in the male, absent 
inthefemale; gular scales feebly keeled. Body feebly compressed ; 
no dorso-nuchal fold. Dorsal scales subrhomboidal, subimbricate, 
strongly keeled, passing gradually into the minute, granular 
scales of the sides; ventrals much larger than dorsals, rounded, 
imbricate, smooth. The adpressed hind limb reaches the eye 
or a litte beyond; digits moderately dilated; 16 lamelle under 
phalanges IJ and ITI of the fourth toe. Tail scarcely compressed, 
twice as long as head and body. Male with enlarged postanal 
scales. Reddish brown above, with a paler broad vertebral 
stripe, widening on the nape; this stripe edged with dark brown 
in the female; lower parts golden, the gular appendage bright red. 
e 
Total length ...... 150 millim. Fore limb....:. 23 millim. 
IE IGANG Raltan sar eaadieae TOMAS Jalgael ITM) gg By se 
Width of head... 10 ,, Hain Resse errs TOOT 
BOC N bosondeoaponn POETS 
Two specimens, male and female, from Omilteme, Guerrero, 
7600 ft. 
The male is remarkable in the absence of the inner digit on the 
four limbs. 
Allied to A. nebulosus Wiegm. Distinguished principally by 
the smooth ventral scales. 
SCELOPORUS GADovI#. (Plate VII. fig. 1.) 
Head-shields smooth; frontal transversely divided, separated 
from the interparietal by a pair of frontoparietals; interparietal 
as long as broad ; parietals small, one pair on each side ; two canthal 
scales; five or six large transverse supraoculars, bordered inwards 
by one series of scales, outwards by one or two; five long pointed 
scales form a strong denticulation in front of the ear. Dorsal 
scales larger than ventrais, strongly keeled, pointed or shortly 
mucronate, forming oblique series converging towards the median 
line, passing gradually into the smaller scales of the sides; 73 to 
77 scales between the interparietal shield and the base of the tail ; 
19 or 20 scales, taken in the middle of the back, correspond to the 
length of the shielded part of the head. Ventral scales small, 
smooth, bicuspid. 75 to 80 scales round the middle of the body. 
The adpressed hind limb reaches the ear; tibia as long as the 
distance between the end of the snout and the ear; the distance 
between the base of the fifth toe and the extremity of the fourth 
exceeds the distance between the end of the snout and the posterior 
border of the ear. 28 to 33 femoral pores on each side, the two 
series narrowly separated on the preanalregion. Tail compressed; 
caudal scales a little larger than dorsals, strongly keeled, the two 
median upper series more strongly mucronate and forming a pair 
of serrated ridges. Male with slightly enlarged postanal scales. 
Greyish olive above, reddish on the sides, dotted with bluish 
