130 class reptilia. 



Physignathus 



Have, with the same teeth, the same scales and 

 pores, a head very much swelled behind, without 

 cuticular appendage ; and a crest of large pointed 

 scales on the back and tail, which is much com- 

 pressed. 



We are acquainted with one large species of 

 Cochin- China (^Physignathus cocininus, Nob.) ; blue, 

 with strong scales, and some spines on the swelling 

 of the sides of the head. It lives on fruits, &c. 



IsTiURUS, Cuv. LoPHURA, Gray.* 



Have, as a distinctive character, an elevated and 

 trenchant crest, which extends over a part of the 

 tail, and which is sustained by high spinous apophy- 

 ses of the vertebrae. This crest is scaly, like the rest 

 of the body. The ventral and caudal scales are small, 

 and approach somewhat to a square form. The teeth 

 are strong, compressed, and without denticulations : 

 they have none in the palate. Their thighs have a 

 range of pores. The skin of the neck is loose, 

 but without forming a cuticular appendage or 

 dewlap. 



Lepechin, Voy. I. p. 517, pi. xxii. f. 1 and 2, which make but one species. 

 M. Kaup assures us, that it has no exterior tympanum. (Isis of 1 825, 1. 39 1 .) 

 Not having seen these animals, I hesitate to class them. 



* I have changed this name of Lophura, which approaches too much to 

 that of Lophyrus. 



