SYNOPSIS OF THE REPTILIA. 347 



Amphisb.ena, Scales quadrangular ; anus with pores. 



Leposternon. Resembles the last, but the muzzle is advanced ; tho- 

 racic rings irregular. 



Tyfhlops. Eyes hardly visible ; scales imbricate ; front plated. 



Stenostoma. Muzzle depressed, obtuse. 

 Typhlops. Muzzle with a single frontal sharp-edged plate. 

 Rhinophis. Muzzle pointed ; tip of the tail with a horny shield. 

 Typhlina. Muzzle with a single plate ; tail spined ; eyes none. 



Anilius. Coral Snakes. Body and head cylindrical, with small 



imbricate scales, those beneath rather larger, 



Anilius. Tail obtuse ; a single row of larger beneath. 



TJropeltiS' Head small ; muzzle pointed ; tail obliquely truncate. 



Order V. SAURES. The Lizards. 

 Body covered with scales ; feet four, rarely two, with toes. 



Family 1. CHAM^LIONIDiE. 



Toes scansorial, syndactyle, divided into two portions ; tongue 

 excessively long, vermiform, the tip enlarged and obtuse ; 

 tail prehensile. 



Chamcsleon Linn. 



Sub-genera : Triceros, Dicer os. 



Family 2. IGUANID^Si. Thick-tongued Lizards. 



Tongue thick, not extensible, and only notched at the tip ; 

 palate furnished with teeth ; neck narrower than the head, 

 which is more or less widened behind. 



PoLYCHBUs Cuv. Tail long, slender, and smooth, more or 

 less prehensile ; body smooth, without a 

 dorsal crest ; throat pouched ; palate ge- 

 nerally furnished with teeth : representing 

 the chameleons. 



Sub-genera ; Norops * , Lcsmanetust UrostropkuSy Pdychrus, Br achy' 

 lophus.f 



Iguana Daud. Head, body, and tail more or less compressed, 



and armed with a dorsal range or crest of 



spines ; throat with a pouch ; toes simple. 



Sub-genera : Ophrycessa, Iguana, Basaliscus, Amhlyrhynchus, Alopo- 

 notus. 



Stellio Daud. Head and body more or less depressed, the 

 • Connects this genus to Anolis. f Connects Polychrus to Iguana. 



