19. AGAMA. 335 



Stellio, part., Daud. I. c. iv. p. 5 ; Cuv. I. c. p. 31 ; Fitz. I. c. 

 Trapelus, Cuvier, I. c. p. 35 ; Kaup, Ists, 1827, p. 614 ; Waaler, Si/st. 



Amph. p. 144; Gray, Cat. Liz. p. 258. 

 Tapaya, Fitzing, I. c. 

 Stellio, Wagl. I. c. p. 145; Du7n. Sf Bihr. I. e. p. 626; Gray, I. c. 



p. 254. 

 Phrynopsis, Fitzing. Syst. Rept. p. 80. 

 Podorrhoa, p. 80. 

 Pseudotrapelus, p. 81. 

 Planodes, p. 81. 

 Trapeloides, p. 81. 

 Psammorrhoa, p. 81. 

 Eremioplanis, p. 82. 

 Acanthocercus, p. 84. 

 Laudalda, Ch-ay, I.e. p. 254. 



Agama, Oray, I. c. p. 250; Peters, Reise n. Mossamb. iii. p. 38. 

 Plocederma, Blyth, Joum. As. Soc. Beng. xxiii. 1854, p. 737. 

 Barycephalus, Gunth. Proc. Zool. Soc. 1860, p. 150. 



Tympanum distinct. Body more or less depressed. Dorsal crest 

 absent or feebly developed. A pit on each side of the throat and a 

 transverse gular fold. Gular sac present or absent. Tail round or 

 feebly compressed, No femoral pores ; males with callose prseanal 

 scales. 



Africa ; Southern Asia ; South-eastern Europe. 



Synopsis of the Species. 

 I. Occipital scale not enlarged ; caudal scales not forming annuli, 



A. Third toe the longest ; two much enlarged scales at the base 



of the claws. 



Median dorsal scales smooth, or nearly so, 



not larger than the ventrals 1. mutabilis, p, 338. 



Median dorsal scales keeled, larger than 



the ventrals 2. sinaita, p. 339. 



B. Fourth toe the longest. 

 1. Dorsal scales equal. 



a. Ear-opening larger than the eye- 



opening ; third and fourth toes 



nearly equally long, 3. hartmanni, p. 340. 



b. Ear-opening not larger than the eye-opening. 



a. Tail compressed ; ventral scales 



strongly keeled 4. tournevillii, p. 340. 



/3. Tail rounded. 



* Dorsal scales much larger than the ventrals. 



Nostril pierced just below the canthus 

 rostralis ; tibia as long as the skull (to 

 occiput) ; ventral scales smooth or nearly 

 so 5. ayilis., p. 341. 



