20. PHRYNOCEPHALTTS. 373 



muct depressed at the base, then roundish, ending obtusely ; caudal 

 scales smooth, except posteriorly, where the upper are slightly and 

 the lower distinctly keeled. Dirty grey above, yellowish interiorly ; 

 an immaculate vertebral band, on each side of which irregular black 

 and yeUowish-orange spots j throat and chest blackish j a large 

 elongate deep black spot on the middle of the belly, and another 

 on the lower surface of the end of the tail. 



Total length 114 milHm. 



Head and neck 18 • „ 



Body 39 „ 



Tail 57 „ 



Kuku Lake. 



4. Pkrynocephalus theobaldi. 



Phrynocephalus tickelii, part., Oiinth. Proc. Zool. Soc. 1860, p. 161. 

 olivieri, (reore B. ^ £.) Theoh. Jowm. As. Soc. Seng. xxxi. 1862, 



p. 618. 

 theobaldi, Myth, torn. cit. xxxii. 1863, p. 90 ; Blanf. torn. cit. 



xliv. 1876, p. 192, and 2nd Yark. Miss., Sept. p. 6. 



caudivolvulus, part., Giinth. Rept. Brit. Ind. p. 161. 



stoliozkai, Steind. Novara, Rept. p. 23, pi. i. figs. 6, 7. 



caudivolvulus, Anders. Proc. Zool. Soc. 1872, p. 387. 



Forehead very convex, with enlarged convex scales ; supraorbital 

 scales about as large as the largest dorsals ; occipital scales much 

 larger ; nostril directed forwards ; nasal separated from its fellow by 

 one or three longitudinal rows of scales. Dorsal scales homogeneous, 

 small, granular on the sides, enlarged, flat, and subimbricate on the 

 vertebral region, all perfectly smooth ; pectoral and ventrals smaU, 

 perfectly smooth, not mucronate ; scales on upper surface of limbs 

 smooth. Outer side of third and fourth toes feebly but distinctly 

 denticulated. Tibia as long as the skull. Tail roundish, thickened 

 and depressed at the base, covered with smooth scales, ending 

 obtusely ; its length is once and a half to once and two thirds the 

 distance from gular fold to vent. Grey above, more or less spotted 

 with blackish or with light, dark-edged ocelli ; lower surfaces white ; 

 male with the middle of the throat and of the belly, and the end of 

 the tail inferiorly, black. 



Total length 110 millim. 



Head 11 „ 



Width of head 11 „ 



Body 38 „ 



Fore limb 26 „ . 



HindUmb 39 „ 



Tail 61 „ 



Tibet; Eastern Turkestan. 



a. cJ. Tsomoriri, Tibet. Messrs. v. Schlagintweit [0.]. 



b-c. $ & hgr. Turkestan. M. Severzow [C.]. 



