372 AGAMID^. 



series of scales. Dorsal scales irregular, on the vertebral region 

 enlarged, more or less imbricate, smooth or very feebly keeled ; on 

 the sides granular, intermixed with irregularly arranged enlarged 

 nail-like or pointed scales. Gular, pectoral, and ventral scales 

 smooth, none mucronate. Scales on upper surface of limbs smooth 

 or feebly keeled, intermixed with enlarged ones. Outer and inner 

 edge of third and fourth toes with a fringe of acute lobules. Tibia 

 longer than the skull. Tail round, depressed, and more or less 

 swollen at the base, ending in an obtuse point, covered with more or 

 less distinctly keeled scales, on the basal portion with scattered 

 enlarged projecting tubercles ; the length of the tail equals once and 

 one fourth to once and two thirds the distance from gular fold to 

 vent. Grey above, with darker spots sometimes forming interrupted 

 transverse bars ; tail above with dark cross bars, which are either 

 absent or of a pale grey on the lower surface. Lower surfaces 

 white ; throat and breast generally marbled with grey. 



Total length 116 millim. 



Head 13 „ 



Width of head 14 „ 



Body 45 „ 



Fore limb 31 „ 



Hind limb 44 „ 



Tail 58 „ 



South-western Siberia ; Turkestan; South-eastern Russia; Persia. 



a. (5. Kirghiz Steppe, Astrachan. Dr. A. Giinther [P.]. 



b. cJ . Astrachan. 



c-d. c? 2 . Siberia. Berlin Museum. 



e. 2 . Siberia. Dr. J. E. Gray [P.]. 



f-h. c5 & hgr Sysfyk-Kul. Geographical Society of 



Bremen. 

 t-k. cJ 2 • West Golodnaja. St. Petersburg Museum. 



l-q. c? , 2 , & hgr. Mangyschlak. St. Petersburg Museum. 



r-8. (S 2 • Turkestan. M. Severzow [C.]. 



t. 5. Between Tehran and Kazvin. W.T.BlanfordjEsq.FC.l. 



u-v,w-y. S2- Between Shiraz and Isfahan. W.T. Blanford,E8q.[C.J. 



2i Phrynocephalus vlangalii. 



Phrynocephalus vlangalii, Stratich, Votj. Przewalski, Eept. p. 20, 

 pi. iii. fig. 3. 



Forehead convex, with enlarged convex scales ; nostril anterior, 

 directed not upwards but outwards, pierced under the canthus 

 rostralis ; nasal very concave, separated from its fellow by six or 

 seven longitudinal series of scales. Back with very distinct, mostly 

 transverse folds ; scales homogeneous, slightly imbricate, enlarged 

 on the vertebral region, smaller on the sides, all more or less convex 

 but not keeled. Gular, pectoral, and ventral scales quite smooth, 

 the former rather convex. Outer edge of third and fourth toes 

 distinctly fringed. Tail short and thick, suddenly enlarged and 



