LIOLEPIS. 153 



Physignathus cochinchinensis. 



Physignathus cocincinus, Cuv. Regne Anim. 



Lophura cuvieri, Gray, in Griff. Anim. Kingd. ix., Syn. Rept. p. 60. 



concinna, Gray, I. c. p. 61. 



Istiurus physignathus, Dum. ^ Bibr. iv. p. 387. 



An occipital shield is present, flat and subcircular ; thirty-six molar teeth in each jaw ; a 

 series of six or seven shields along each side of the throat. Greenish olive : tail with bro\vn 

 cross bands. 



This species, which we have not seen, is from Cochinchma. A specimen in the Paris 

 Museum is 28 inches long, the mutilated tail taking 17 inches. 



Physignathus mentagee. (Plate XV.) 



Dilophynis mentager, Giinth. Proc. Zool. Soc. 1861, p. 188. 



Occipital shield very small, one-thu'd of the size of the tympanum, circular ; eleven molar 

 teeth on each side of the upper jaw, and twelve in the lower ; a series of eleven shields along 

 each side of the throat. Five or six pores on the inner side of the femur. Green : tail with 

 brown cross bands. 



A specimen of this species was sent by Mouhot from Chartaboum, on the coast of Siam ; 

 it is stuffed, 30 inches long, the tail measuring 21 inches. In a second specimen, sent by 

 the same collector from Pachebone, and preserved in spirits, I was enabled to ascertain that 

 femoral pores are present, and consequently that this species does not belong to the genus 

 Dilopkyrus. The longest lobes of the dorsal crest are as long as the inner front toe in the 

 adult specimen, whilst they are only half as long in the other, which is 21 inches long. 



LIOLEPIS, Cuv. 



Tympanum naked ; the upper parts covered with minute granular scales 

 of equal size ; tail depressed, with very small, square, keeled scales arranged 

 in transverse series ; throat with two transverse folds ; no dorsal crest ; 

 ventral scales small, smooth. Femoral pores. Skin of the sides of the 

 trunk very lax, capable of being expanded into a sort of wing, supported by 

 the very long anterior spurious ribs. 



Only one species is known. 



