1872.] F. Stoliczka — On Indian Lizards. 115 



ed them at Hardwar, where the Ganges leaves the hills for the plains. 

 They nieasme from 4 to 18 inches, in all stages of growth, the tail when 

 perfect is fully f- of the total length. I find that in former years I also 

 ohtained this species at Misouri, and on the road from Kalka to Simla, hav- 

 ing noticed the difference of the scales on the neck and hack, as compared 

 with those of the next species, but unfortunately I have no specimens by 

 me now. 



^ Stellio tubeeculatus, (Gray), (I. E., p. 157). 



PI. Ill, fig. 3. Upper view of the anterior part of the body. 



This well known species is readily distinguished from the last by the 

 much smaller size of the enlarged scales on the back, which are in from 13 to 17 

 longitudinal series in the middle of it ; on the middle of the neck the scales 

 are not at all enlarged, but there is a low, often minute, nuchal crest present. 

 The structure of the head-shields is in both species very similar, but they 

 are always less distinctly kseled in St. tuber culatus, sometimes nearly, and 

 above the eyes always, smooth ; the enlarged row of scales below the eye 

 is well marked ; the nasal sometimes touches the rostral and first labial, but 

 more generally it is separated from them by smaller shields ; the enlarged 

 spiny scales on the side of the neck are less prominent in this, than in the 

 former species ; the scales of the belly are proportionately smaller, in 48 — 54 

 transverse series ; the enlarged scales at the sides are generally few, occasion- 

 ally arranged in transverse rows, but sometimes they are nearly entirely absent ; 

 rarely, in male specimens, are these spines nearly as numerous and irregularly 

 distributed, as in the former species. The patch of enlarged callous scales on 

 the middle of the belly is much more often present, than in Day anus. The fore- 

 limb, when laid backward, generally does not reach the groin, but occasionally 

 it does so ; the hind-limb, when laid forward, usually reaches the tympanum, 

 sometimes the eye, rarely the front edge of the eye, but I have not seen one 

 specimen in which it extends to the rostral shield. The largest specimen I 

 measured is 13~| inches, of which the body is very nearly 5, and the tail Sc- 

 inches. On the whole, both the limbs and the tail are somewhat shorter in 

 the present species than in the former. 



There is also a difference in coloration. Young and adult specimens 

 are above on body and limbs of a dark olive brown or almost blackish colour, 

 with numerous darker spots in the young, indistinct in the adult, and inter- 

 mixed with yellowish spots, these being fewer, but often larger than in Dai/a- 

 nus ; occasionally they are entirely absent. The head in the adult is above 

 cinereous olive, spotted black and yellowish at the side ; in front of the shoulder, 

 on the breast, and also at the sides of the body, there are often numerous 

 bright yellow or orange spots present. Lower side uniform dull white in young, 

 generally spotted with dusky on the throat. In adults the throat becomes 



