( xix ) 



B. — Prceanal or fcTnoral pores, or callous scales in their place. 

 Tympanum naked. 



Stellio. 

 Scales unequal in size. Tail rounded, more or less verticillafce, 



callous scales in place of pores. 



Enlarged scales in 13 to 17 rows, not conti- 

 nued on the neck ... S. tuberculatus. 



Enlarged scales in 8 rows ... S. melanurus. 



Enlarged scales continued on the neck ... S. Dayanus. 



Enlarged scales smooth ... S. Himalayanus. 



Trapelus. 



Scales unequal in size. Tail rounded. 



Non-verticillate. Anal pores present. 

 Femoral pores none. Paratoids unarmed ... T. megalonyx. 



Agama. 



Scales rhombic, keeled. Tail elongate, non-verticUlate. 

 Paratoids armed with spines. Anal pores. 

 Femoral pores none. ... A. agiliS. 



{Sand lizards, burrowers, gregarious.) 

 Scales of back granular. Tympanum naked. 

 Leiolepis. 

 Skin of sides lax, forming a pseudo-parachute. 

 Femoral pores. Herbivorous. 

 Sides handsomely barred ... L. guttatus. 



Ukomastix. 



Scales of back granular. Tympanum naked. No pseudo- 

 parachiite. Femoral and prseanal pores. Herbivorous. 

 Tail excessively spiny. Colours dull ... U. Hardwickii. 



Family CHAIVLELIONID^. 



Tail prehensile. Toes zygodactylous. Eyes telescopic, moving 

 independently. Habits diurnal. Food insects. 



