SAURES. AGAMID^. 877 



Cicigna Gray. Tail rather compressed ; the scales, as 

 well as those of the back^ unarmed ; scales of the 

 beUy smooth. 



C. semiformis. G. 



Leiolepes Cuv. Lizard-like ; tongue but shghtly ex- 

 tensible j the anterior portion scaly, and triangularly 

 bifid ; the posterior half papillose, with the hinder 

 angles prolonged, as in birds ; head with very small 

 polygonal plates ; ears naked ; beUy with smooth and 

 imbricated scales ; tail excessively long, smooth^ and 

 round : connecting the Lacertidse with the Iguanidae. 

 L. guttatus Cuv. Erp. Gen. iv. 465. 



Family 4. AGAMID^ Sw. Frog or Great-bellied 



Lizards. 



No palatine teeth; body thick, depressed (typically), 

 gibbous ; tail and belly always covered with small im- 

 bricated scales ; head large^ often inflated, armed with 

 long spines on the nape, ears, or neck; throat often 

 furnished with a dewlap, capable of inflation ; tongue 

 short, thick ; toes simple, free, without any discoid en- 

 largement. 



Phbynosoma. Tail flattened, short, or moderate ; head 

 and body greatly depressed ; no palatine teeth or anal 

 pores. 



Phrynosoma Wiegman. Body nearly orbicular ; scales 

 on the belly, limbs, and tail small and imbricate ; 

 those on the upper surface rather larger, and inter- 

 spersed with longitudinal rows of spines ; tail shorter 

 than the body ; hind head with large spines. 



P. Douglassii Bell. Linn. orbiculare. Wagl. Icones, fas. 

 Tr. xvi. pi. 10. ii. pi. 23. 



bufonium Wieg. 



Tropidolepis Cuv. Head and body short, depressed, 

 the former rounded in front ; scales imbricate, cari- 

 nated above, and smooth beneath ; tail thick, mode- 



