334 tiacertidse. 



feebly depressed, 1^ to IJ times as long as broad, its lenirtli 3| to 4 

 times in lengtli to vent, its depth equal to the distance between the 

 anterior corner of the eye and the tympanum ; cheeks sometimes 

 swollen ; snout pointed, with the nasals strongly swollen, as long as 

 the postooular part of the head, with a more or less distinct concavity 

 above, extending to the middle of the frontal shield ; canthus rostralis 

 obtuse, loreal region feebly concave. Pileus If to 2 times as long 

 as broad. Neck as broad as the head. Hind limb reaching the 

 shoulder, the collar, or between the collar and the ear in males, the 

 axil or the shoulder in females ; foot slightly longer than the head ; 

 toes short or rather short, feebly compressed. Tail 1^ to ]| times as 

 long as head and body, much flattened at the base, compressed towards 

 the end. 



Upper head-shields convex, smooth ; nasals in contact behind the 

 rostral, the suture between them ^ to i the length of the frontonasal, 

 which is broader than long ; prefrontals as long as broad or a little 

 longer than bi'oad, forming a median suture* ; frontal shorter than its 

 distance fi'om the end of the mouth, If to If times as long as broad, 

 narrow behind , f to f of its lateral border in contact with the supra- 

 oculars, unless separated by a series of granules ; parietals as long as 

 broad or slightly broader than long ; interparietal much smaller than 

 the frontoparietals ; normally no occipital. t Two large supraoculars, 

 jjreceded and followed by small shields or granules, the first usually 

 shorter than the second and a little longer than its distance from the 

 second loreal ; 6 or 7, rarely 8, superciliaries, first longest, separated 

 from the supraoculars by one or two series of granules ; sometimesj a 

 complete series of granules borders the supraoculars on the inner side. 

 Eostral as deep as broad or slightly deeper than bi-oad, narrower 

 beneath than above ; 3 nasals, the lower in contact with the two or three 

 anterior upper labials but not reaching the rostral ; anterior loreal as 

 long as deep or deeper than long, shorter than the second; subocular 

 keeled below the eye, resting on the 5th to 7tli, 6th to 8th, or 7th to 

 9th upper labials. Temporal scales granular, smooth, lower larger; 

 tympanic shield present; no auricular denticulation. Lower eyelid 

 opaque, with feebly enlarged scales in the middle. 



5 pairs of chin-shields, the 3 anterior in contact in the middle. 



■ A very small shield between them in a male from Perewalnaja. 



t A small but very distinct occipital, widely separated from the interparietal, 

 in a female from Perewalnaja. 



J In 2 specimens from 13al Ku.i'vi, in 2 from Perewalnaja, and in single 

 specimens from Kizil Kum, Askhabad, and Tedshen.— Such specimens have 

 been named E. transcaajpica by Nikolsky. 



