20. PHETNOCEPHALirS. 377 



8. Phrynocephalus przewalskii, 



PJirynocephalus przewalskii, Strauch, Voy. Pnsewalski, Rept. p. 10, 

 pi. ii. fig. 1. 



Forehead convex, with, large keeled or tectiform scales ; nostril 

 anterior, turned upwards ; nasal separated from its fellow hy three 

 longitudinal series of scales. Dorsal scales homogeneous, subimbricate, 

 large, plane, and very distinctly keeled on the vertebral region, 

 smaller, very convex, tectiform or spiniforra on the sides. Gular, 

 pectoral, and abdominal scales imbricate and distinctly keeled. 

 Third and fourth toes with a fringe of long acute lobules on the 

 outer side. Tail long, thickened and scarcely depressed at the base, 

 then rounded, the end curling upwards, and covered with imbricate 

 keeled scales. Tello wish-orange above, yellowish inferiorly ; a 

 broad sinuous black vertebral band, ending on the sacral region ; 

 sides black-dotted. 



Total length 193 millim. 



Head and neck 27 „ 



Body 54 „ 



Tail 112 „ 



Alashan Desert. 



9. Phrynocephalus affinis. 



Phrynocephalus affinis, Strauch, Voy. Przewalski, Rept. p. 13, pi. ii. 

 fig. 2. 



Forehead convex, with large convex scales; nostril anterior, 

 turned upwards ; nasal separated from its fellow by three or four 

 longitudinal series of scales. Dorsal scales homogeneous, subim- 

 bricate, larger and slightly keeled on the vertebral region, smaller, 

 slightly tectiform on the sides. Gular and ventral scales hardly 

 keeled, pectorals very distinctly keeled. Third and fourth toes 

 with a fringe of short acute lobules on the outer side. Tail long, 

 thickened, and depressed at the base, then roundish, slightly com- 

 pressed, the end curling upwards, with imbricate keeled scales. 

 Dirty yellowish grey above, the sides of the neck and body fre- 

 quently reddish ; two series of blackish spots, sometimes confluent 

 on the back ; pectoral and abdominal region, and sometimes also 

 the throat, more or less blackish. 



Total length 174 miUim. 



Head and neck 23 „ 



Body 50 „ 



Tail 101 „ 



Chinese Province Ordos. 



10. Phrynocephalus maculatus. 



Phrynocephalus maculatus, Anders. Proc. Zool. Snc. 1872, p. 289, 

 fig. ; Blanf. Zool. E. Pers. p. 331. 



