370 A&AMID^. 



Pectoral scales quite smooth ; fourth toe 



feebly fringed 4. theobaldi, p. 373. 



Pectoral scales slightly keeled ; fourth toe 



strongly fringed 5. versicolor, p. 374. 



2. Pectoral scales strongly keeled. 



a. Fourth toe strongly fringed. 



Posterior ventral scales smooth ; tibia as 



long as the skull 6. frontalis, p. 375. 



Posterior ventral scales smooth ; tibia longer [p. 375. 



than the skull 7. caudivolvulus, 



Posterior ventral scales keeled 8. przewalsJcii, p. 377. 



b. Fourth toe feebly fringed. 



Ventral scales feebly keeled 9. affinis, p. 377. 



3. Pectoral scales smooth;, tail nearly twice as long as the 



distance from gular fold to vent. 



End of tail black inferiorly 10. maculatus, p. 377. 



End of tail not black 11. axillaris, p. 378. 



C. Dorsal lepidosis homogeneous ; sides of head and neck -with 

 projecting spine-like scales. 



Limbs very lone 12. inter scapularis, 



[p. 378. 

 II. A large, folded, fringed lobe of the skin at the angle of the 

 mouth. 



Digits very strongly fringed 13. mystaceus, p. 379. 



1. Phrynocephalus olivieri. 



Phrynocephalus olivieri, &i'ay, Cat. p. 260. 



Phrynocephalus tickelii, Oray, I. c. 

 Olivier, Voy. Emp. Ottom. pi. xlii. fig. 1. 

 Phrynocephalus olivieri, Dum. Sf Bibr. iv. p. 517 ; Anders. Proc. 



Zool. Soc. 1872, p. 386 ; Blanf. Zool. E. Pers. p. 327. 

 tickelii, Giinth. Rept. Brit. Ind. p. 160. 



Snout extremely short, vertically truncate; upper head-scales 

 large, smallest on the middle of the supraorbital region, where they 

 are about the size of the median dorsals, largest and convex behind 

 the nostrils and on the occiput ; nostril directed forwards and 

 upwar ds ; nasal large, in contact with its fellow (quite exceptionally 

 separat ed by a series of scales). Dorsal scales flat, smooth, juxta- 

 posed or slightly imbricate, with scattered enlarged nail-like scales ; 

 sides more or less folded, with small granular scales intermixed with 

 scattered enlarged ones. Gular, pectoral, and ventral scales smooth 

 the former very small but not granular ; ventrals square, forming 

 slightly oblique transverse series. Scales on upper surface of limbs 

 larg e, smooth or feebly keeled. Outer edge of third and fourth toes 



