4 Lacertidse. 



lY. Ventral plates smooth; collar absent or feebly 

 marked ; subdigital lamellae keeled, except in 

 Tropidosaura and some species of Psammo- 

 droimis ; dorsal scales large or rather large, 

 rhombic or lanceolate, strongly keeled. 



A. Lower eyelid opaque, with numerous scales in 



the middle. 



Nostril pierced between two or three nasals; digits 



with smooth or tubercular lamellae inferiorly. 



13. Tropidosaura, Pitz. ' 

 Nostril pierced between two nasals and the first 



upper labial or separated from the latter by a 



narrow rim ; digits with smooth, tubei'cular or keeled 



lamellae inferiorly .... 14. Psammodromus, Fitz.// / 

 Nostril pierced between two or three nasals ; digits 



with keeled lamellae inferiorly . . 15. Ichnotropis, Peters. ^ ' '^ 



B. Lower eyelid with a very large transparent disc. 



Lower eyelid distinct from the upper . . 16. Cabrita, Gra.j.1 ■> /'f'i 

 Lower eyelid fused with the upper . . 17. OpJiiops, Mcnctr. 



V. Ventral plates smooth ; collar present or absent ; 

 subdigital lamellae keeled, or digits fringed 

 laterally; dorsal scales small; nostril well sepa- 

 rated from the first upper labial. 



Digits not distinctly serrated laterally ; collar more or 



less distinct ; femoral pores . . . 18. Eremias, Wiegm. 



Digits serrated or fringed laterally ; collar distinct ; 



femoral pores . . . . . .19. Scaptira, Wiegm. 



Digits fringed laterally ; collar distinct ; no femoral 



pores ....... 20. Macmahonia, Blgr. 



Digits fringed laterally ; no collar ; no femoral pores. 



21. Aporosaura, Blgr. 



y I. No frontoparietals ; two series of large smooth 

 plate-like scales along the back and tail ; digits 

 serrated laterally ; tail much depressed, fringed 

 laterally . . . . 22. Holaspis, Gray. 



