38S DR. J. ANDERSON ON PERSIAN, [Mar. 5, 



Vent to snout 2" ; vent to tip of tail 2" 6'" ; snout to occiput 6'" ; 

 neck 2'" ; anterior extremity 1 '; posterior limb 1" 7'" • 



Hab. Yarkand. 



I have received ten specimens of this species from the foregoing 

 locality ; and the number would indicate that it is a common species 

 in the high region of Yarkand and Tibet. Mr. Theobald obtained 

 this Lizard on the shores of the Chomorreri Lake. He describes the 

 female as smaller than the male, and the species as monogamous in 

 its habits, a pair occupying a burrow a few inches deep in the sandy 

 soil, the opening of which is often concealed by a stone or tuft of 

 grass. 



Fig. a. 



Phrynocepha!n,< pirzwus. 



Phrynocephalus persicus, Filippi, Viaggio in Persia, 1802, 

 pp. 343, 344. (Fig. 5.) 



Nostril plates anterior, but separated by five rows of scales. Body 

 covered with small imbricate smooth scales, their tips directed back- 

 wards and slightly upwards ; sides granular or nearly so ; inter- 

 spersed oval, rather pointed tubercles, either single or in groups of 

 three or five ; when more than two or three, one of the tubercles is 

 larger than the others ; they are largest on the back and root of the 

 tail, but are not continued on to the tail beyond its basal fourth. 

 Tail with rather small smooth imbricate scales. Two rather flat- 

 tened tubercular scales above the anterior angle of the eye. Upper 

 eyelid with a fringe of twelve rather oblong scales ; lower eyelid 

 with ten larger pointed scales. A group of large tubercles above 

 the region of the hidden ear, and continued forwards to below the 

 middle of the eye. Twenty-four upper and twenty-eight lower 

 labials. Nape with a short obscure crest of five small dark brown 

 rounded spines. A fold across the neck to behind the angle of the 

 jaw (more or less distinct on the nape), whence another is pro- 

 longed over the shoulder, marked by two groups of moderate-sized 

 pointed tubercles. Scales on the upper surface of the hinder ex- 

 tremity, below the knee, slightly keeled. Scales of ventral aspect 

 smooth. Rest of tail flattened and laterally much dilated, covered 

 with spiny tubercular scales, rapidly contracting at the anterior 



