CLASS REPTILIA. 



Green-brown, smooth ; dorsal line blue ; dorsal scales mi- 

 nute ; abdominal rather larger ; caudal largest, keeled. 



Cyclufoid Tropidurus. Trop. Cylurus. Agama Cyclurus. 



Spix, t. 17. f. 1. 



Olive brown, longitudinally keeled; back and tail black- 

 banded ; beneath bro^vn. See also Seba, t. 97- ^- ^' Pr« Max. 

 Bon. Trans, xiv. t. 15. 



4, Tail tapering, with large verticillate spinose scales ; head 

 and body with minute granular scales. ■ Uranocentron, 

 Caup» Doryphorus, Cuv. 



Long-tailed Doryphorus. Gph. (Jurari) Azureus. Agama 

 Azureus, Daud. iv. t. 46. 



Bright blue, spotless ; tail long. Inhab. Surinam. 



Short-tailed Doryphorus. Oph. Uran. Brevicaudatus. Agama 

 Brevif Daud. iv. t. 47- Lac. Azurea, A. Gmel. 



Blue, black-banded ; tail short, depressed. Mus. Col. Surg, 



III. Head with numerous small regular shields ; hade and 

 tail with large keeled spines, converging towards the hack, 

 and forming a crest ; femoral pores none. Leiocephalus, 

 Gray. 



Keeled Leiocephalus. Leiocephalus Carinatus, Gray. Ann. 



Phil. 



Green, blackish-banded ; dorsal scales large, broad, keeled ; 

 keels forming oblique ridges ; the vertebral keel the highest. 

 ? Mus. Brit. 



IV. Head covered ivith small shields ; hack arid tail with large 

 keeled scales ; belly with smooth scales ; tail long, with 

 imbricate keeled scales ; femoral pores large. America. 

 Tropidolepis, Cuv. Scelophorus, Wiegmanii. 



42 



