30 REPTILIA. 



on the temple. This singular Saurian appears to belong to In- 

 dia. The 



GONOCEPHALUS, Kaup. 



Is closely allied to Lophyrus; the cranium also forms a sort of 

 disk by means of a ridge which terminates in a notch above each 

 eye. There is a dewlap and a crest on the neck. The tympanum 

 is visible. (l) 



Lyriocephalus, Merr. 



In addition to the characters of a Lophyrus, the species of this 

 subgenus have a tympanum concealed under the skin and muscles, 

 like that of the Chameleon: they also have a dorsal crest and a ca-. 

 rinated tail. 



In the species known, Lyrio margaritaceus, Merr.j Lacerta 

 scutata, L. ; Seb. cix, c, the bony crest of the eye-brows is still 

 larger than in the Ag. gigantea, and terminates behind, on each 

 side, in a sharp point. Large scales are scattered among the 

 small ones on the body and limbs; imbricated and carinated 

 scales on the tail; a soft, though scaly enlargement on the end 

 of the muzzle. This truly singular species is found in Bengal 

 and other parts of India.(2) It feeds on grain. 



Brachylophus, Cuv. 



Small scales; the tail somewhat compressed; a slightly salient crest 

 on the neck and back; a small dewlap, a series of pores on each thigh, 

 and, in a word, a strong resemblance to the Iguanae; but they have 

 no palatine teeth; those of the jaws are denticulate. Such is 



L'Jgiicmc a bandes, Brong., Essai et Mem. des Sav. Etr. I, 

 pi. X, f. 5. From India. It is a deep blue, with light blue bands. 



(1) Isis, 1825, 1, p. 590, pi. iii. 



(2) From this Lyriocephalus, the Pseustes of Merrem and the Phrtnocepiia- 

 I.1TS of Kaup, Fitzinger forms a family called Pneustoidea, which he approximates 

 to that of the Chameleons. The Pneustes depend altogether on a vague and im- 

 perfect description of Azzara, II, 401, on which, also, Daudin had estabhshed his 

 Agame a queue prenante. III, 440; Azzar. says that its ear is not visible, probably 

 because it is very small. The PnTsocEPiiALtrs is composed of the Lac. guttata and 

 the Lac- uralensis, Lepechin. Voy. I, p. 317, pi. xxii, f. 1 and 2, which form but 

 one species. Kaup asserts that it has no external tympanum (Isis of 1825, I, 591). 

 Not having seen these animals, I hesitate as to their classification. Another sub- 

 genus will probably have to be made of the Lezard a oreilks [Lac. aurita. Pall.), 

 Daud., Ill, xlv, remarkable for the faculty it possesses of inflating the two sides 

 of the head under the ears: I have not, however, been able to examine it. 



