SAURES. AGAMID^, 379 



Trapalus Cuv.j Riippell. Head compressed on the sides ; 

 ears nearly concealed; throat forming a conic de- 

 pendent pouch ; the fourth hind toe longer than the 

 third; eyebrows with a carinated ridge^ hut no 

 spines on the neck^ back_, or tail. 



T. agilis. Riipp. Atlas, ii. pi. 6. fig. 1. 



Grammatophora Kaup. Head triangular^ flattened^ 

 the tip rather pointed ; tympanum large, exposed ; 

 tail very long, slender, cylindrical ; no gular pouch ; 

 the toes slender, the fourth longer than the third ; 

 pores on the thighs ; scales small, carinated, often 

 prickly : Australia : 4 species. 



G. muricata. White's Voyage, pi. 38. fig. 1. 



Ceratophorus Gray. Ear or tympanum concealed ; tail 

 long, very slender ; snout forming a short fleshy horn, 

 covered with scales ; the third and fourth toes equal. 

 C. Stodartii. Gray, Ind. Zool. 



LoPHYURA Gray. Head, body, and tail surmounted 

 with a spiny crest, more or less developed in the dif- 

 ferent sub-genera ; caudal scales always imbricate ; 

 tail always long, carinated and greatly compressed : 

 the scansorial type. 



Physignathus Cuv. Head obtuse ; a crest of spines ex- 

 tending from the nape to the end of the tail, which is 

 compressed and gradually attenuated ; hinder fourth 

 toe much the longest, the sides of all the toes fringed ; 

 thighs with femoral pores. 



P. Le Sueurii. Erp. Gen. iv. Cocincinus Cuv. lb. Reg. 

 pi. 40, Anim. pi. 6. fig. 1. 



Lophyura Gray. General characters of the last, but 

 the third and fourth toes are of nearly equal length 

 and the sides of all broadly fringed ; the basal half of 

 the tail is furnished with a very elevated, broad, fin- 

 hke crest, carinated with small spines. 



amboynensis Gray. Phil. Mag. ii. p. 54. Shaw, G. Z. iii. pi. 62. 



Calotes Cuv. Limbs remarkably long and thin ; muz- 

 zle produced ; gular pouch obsolete ; no femoral 



