Eremias. 315 



From end of snout to vent 55 millim. ; tail 89 ; fore limb 22 ; hind 

 limb 36. 



This species is baaed on a single specimen from Kelif, East 

 Bokhara, preserved in the Petrograd Museum, -which may be merely 

 an aberrant H. velox. More specimens are required to establish the 

 validity of E. hedriacjse, which I regard as extremely doubtful. 



24. EREMIAS NIKOLSKII. 



Eremiiia niJcolsMi, Bedriaga, in Nikolsky, Herp. Boss. p. 478 (1905), 

 Ann. Mus. Zool. St. Pc'tersb. x, 1907, p. 233, and Wiss. Ees. Prze- 

 walski Eeis., Amph. Eept. p. 536, pi. viii, iig. 6 (1912) ; Bouleng. 

 Journ. Zool. Ees. iii, 1918, p. 7. 



Body rather strongly depressed. Head depressed, li times as long- 

 as broad, its length 4| times in length to vent ; snout rather long, 

 obtusely pointed, vs^ith the nasals scarcely s-wollen, -with very feeble 

 concavity above, extending to the frontal shield ; canthus rostralis 

 obtuse, loreal region feebly concave. Pileus t-vvice as long as broad. 

 Neck narrower than the head. Hind limb not reaching the axil ; foot 

 slightly longer than the head ; toes slender. 



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

 the suture bet-ween them about ^ the length of the frontonasal, which 

 is broader than long ; prefrontals longer than broad, forming a median 

 suture ; frontal a little shorter than its distance fi-om the end of the 

 snout. It times as long as broad, I of its lateral border in contact 

 ■with the large supraoculars ; parietals longer than broad ; interparietal 

 smaller than the frontoparietals ; no occipital. Two large supra- 

 oculars, preceded by 3 small plates and followed by one small one ; 

 the first of the two large supraoculars as long as the second and longer 

 than its distance from the second loreal ; a series of granules bet-ween 

 the supraoculars and the superciliaries. Eostral li times as broad as 

 deep ; three nasals, the lower just touching the rostral, resting on the 

 two or three first upper labials ; antei-ior loreal deeper than long, 

 shorter than the second ; subocular bordering the mouth, bet-ween 

 the 5th and 6th or 6th and 7th upper labials ; temporal scales hexa- 

 gonal, smooth ; tympanic shield present ; no auricular denticulation. 

 Lo-s\'er eyelid opaque. 



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

 23 gular scales in a straight line between the symphysis of the chin- 

 shields and the median collar-plate ; gular fold distinct. Collar 

 curved, free, serrated, composed of 10 large plates. 



