1870.] Indian and Malayan Amphibia and Reptilia. 181 



series on each, side, intermixed with some large ones. In some 

 specimens, the larger scales are only very few, in others they are 

 scattered irregularly, and again in some they are partially arranged 

 in regular longitudinal rows, and distinguished besides by a black- 

 ish mark on either side of each scale. Nearly in all specimens, there 

 are some enlarged tubercles near the base of the tail ; the ventral 

 scales are in from 18 — 22 longitudinal rows ; the subcaudals are in 

 two rows, very sharply carinated. In young specimens, the nuchal 

 crest is only indicated by a row of slightly enlarged scales, in old fe- 

 males it is still very small, but in the old males it is more developed, 

 being considerably higher than the dorsal crest which continues 

 to the end of the tail ; this last is considerably compressed, entirely 

 resembling in this respect other species of Tiaris. There is a well 

 developed gular sack in male specimens, and a distinct shoulder-fold 

 in all. The extremities and tail are very long ; the fore limb is 

 about as along as the distance between it and the hind limb, and 

 the latter when laid forward, nearly reaches to the end of the snout. 

 The thumb is the shortest, then comes the fifth finger which is half 

 the length of the fourth, then the second, and the third and fourth 

 are sub-equal, the last being slightly longer. The tarsus is very 

 elongated, the first toe very small, the others follow each other as 

 2nd, 5th, 3rd, 4th, the last being remarkably long. 



Color variable. Young specimens which always have the head 

 remarkably short and blunt, are greenish ashy brown with numer- 

 ous dark brown spots above and dark cross bands on the head, 

 one spot in front between the eyes being especially conspicuous. 

 Other young specimens and females are more uniform greenish, 

 but almost always with some dark stripes in front of the shoulder. 

 Male specimens are variously reticulated and obliquely striped 

 with dark brown on the sides, the light interspaces being varie- 

 gated with yellow and red ; sometimes the whole back along the 

 centre is purplish red, and the gular sack in the male is also 

 reticulated with reddish, yellow and black. The red and yellow 

 colours fade away very soon after the death of the animal. Nu- 

 merous short blackish streaks always radiate all round from the 

 eye ; the labials are either dark spotted, or sometimes wholly 

 blackish brown ; the tail in encircled with broad dark bands. 



