SYNOPSIS OP THE REPTILIA. 349 



Family 4. AGAMIDiE. 



Belly and tail entirely covered with small imbricate scales ; 

 palatine teeth none * ; tongue thick, not extensible ; toes 

 simple, free, unequal ; body and tail more or less depressed. 



LoPHiuKA Gray. Tail very long, compressed, and carinated 

 with spines, which extend on the ridge of the 

 back, and are generally large upon the nape. 

 Sub-genera : Istiurus^ Lophyura, Calotes, Lophyrus, Lyriocephalus. 



Draco Linn. Skin of the throat either excessively enlarged, 

 or the sides furnished with wing-like ex- 

 pansions. 

 Sub-genera : Sitana, Clamydosaures, Draco. 

 Agama J)aud. Tan long, slender, more or less rounded ; no 

 crest of spines on the back, head, or tail ; 

 head depressed and enlarged behind. 

 Sub-genera : Agama, Trapelus, Ceratophorus, Grammotophora. 



PHRY>rosoMA Wagler. Body and head flattened, the former 

 wide, and nearly orbicular ; tail short, de- 

 pressed, rough ; no dorsal or caudal crests. 



r Sub-genera : Phrynosoma, Megalochilus, Phrynocepkalus, Tropido- 

 lepiSf Callisaurus. 



Trgpiburus Weig. Palate furnished with teeth ; head and 

 scales somewhat resembling the skinks. 

 Sub-genera : Tropidurus, Leiolcemus. 



Family 5. SCINCOID^. Skinks. 



Feet in general very short, often rudimentary ; body smooth, 



without crests or spines ; scales shining, as in serpents. 

 SciNcug. The four feet with perfect toes, as in Lacerta. 

 Sub-genera : Scincus, Trachydosaurus, Tiliqua, Gymnothalmus. 

 Seps. Body serpent-like ; feet very small, remote, with 

 either three or four toes ; ears distinct ; scales 

 imbricate. 

 Sub-genera : Lygosoma, Seps. 



Chalcides. Scales rectangular ; legs four ; toes variable. 



Sub-genera : Chalcides. 



Ofhiodes. Feet rudimentary ; the toes undivided. 

 Sub-genera iTOphiodes, Pipes. 



Chirotes. Feet only two ; anterior scales verticillated. 

 Sub- genera : Chirotes, 



* Except in such as pass into those Scincoida which have palatine teeth. 



