CLASS REPTILIA. 



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

 nute ; abdominal rather larger ; caudal largest, keeled. 



Cycluroid Tropidurus. Trop. Cyclurus. Agama Cyclurus. 

 Spix, t. 17. f. 1. 



Olive brown, longitudinally keeled; back and tail black- 

 banded ; beneath brown. See also Seba, t. 97- f* ^- 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. Oph. {Uran) Azureus. Agama 

 Azureus, Daud. iv. t. 46. 



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



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

 Breviy Daud. iv. t. 47- Lac. Azurea, A. Grael. 



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



III, Head with numerous small regular shields ; bacJc and 

 tail ivith large keeled spines, converging towards the back, 

 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 with small shields ; back and tail with large 

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

 imbricate keeled scales ; femoral pores large. America. 

 Tropidolepis, Cuv. Scelophorus, Wiegmann. 



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