78 Stoliczka, on Kaclih Reptiles. [Mat, 



larged keeled scales at the side of the head, between the eye and the ear, one 

 particularly large one being conspicuous near the upper anterior edge of the 

 tympanum, which is large, obliquely oval, but without any other spines at 

 its edge ; nostrils lateral, in a single shield. All scales keeled, those of the 

 back larger than those of the belly, the difference in size being, however, 

 much less apparent in the yomig than it is in the adult ; in the latter the 

 keels become almost obsolete on the lower side. A distinct nuchal crest is 

 present ; it is composed of single laminae, and is continued to the base of the 

 tail as a low crest of sharply carinated and pointed, but not enlarged 

 scales. The latter are imbricated on the body, their points being directed 

 backwards and upwards ; and they are arranged in oblique transverse series, 

 about 45 of them being in one row between fore and hind-limb ; 54-58 long- 

 itudinal series ronnd the middle of the body. On the tail the scales are also 

 imbricate, and are arranged in alternating longitudinal series. About 27 upper 

 and as many lower labials, all finely but distinctly pitted. The upper rostral is 

 small like the upper labials, and there are three or four rows of scales between 

 the latter and the lower eyelid ; the lower rostral is much larger, pentagonal, 

 produced and pointed behind, and followed by several small shields. None of 

 my specimens shew an}^ enlarged femoral, or preanal, or subcaudal shields, and 

 none have a trace of any kind of pores. Throat fold distinct, simple. 



The young is olive or pinkish brown, with a dark brown band between 

 the eyes, three spots on the snout and dark marblings on the side of the 

 occiput ; two subquandrangular spots on nape and neck, four on the back 

 and three or four on the base of the tail, gradually passing into incomplete dark 

 bands, of which there are about twelve. All the dark spots on head and back 

 are margined with pinkish white, and the two spots on neck are bounded by 

 two parallel white lines. Corresponding to the dorsal dark spots there is a 

 row of similar spots at the side of the body, and the whole forms a sort of 

 transverse band. Lips dark spotted ; a bright yellowish oblique band from 

 below the eye to the angle of the mouth ; cheeks brown ; extremities above 

 brown banded. Below, yellowish white, spotted with dark and tinged with 

 red on the chin and throat ; gular fold bright reddish blue. In the adult 

 the dark bands and spots are much less distinct, and sometimes almost en- 

 tirely disappear, but many of the scales are distinctly yellowish, and the red 

 colour on the chin is brighter. 



Total length. Head. Tail. Fore-limb. Hind-limb. 



Young, 3-5 0-65 I'G 0-9 1-25 



Adolescent, 4-65 075 2-25 1-15 1-50 



Adult, 6-65 1-10 3-10 1.6 2-25 



The fore-limb, when laid back, fully or very nearly reaches the groin, and 

 the hind-limb, when laid forward, extends a little beyond the gular fold. 

 The third and fourth fingers are subequal, but the fourth hind toe is oae 



