30 REPTILIA. 



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

 dia. The 



GoNocEPHALUs, Kaup. 



Is closely allied to Lophyrusj 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.; 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 Iguan?e; but they have 

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



L'Jguane 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, I, p. 590, pi. iii. 



(2) From this Lyriocephalus, the Pjteustes of Merrem and the rHRxu-ocEPHA- 

 iTJs of Kaup, Fitzinger forms a family called Pxeustoidea, 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 established his 

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

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

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

 one species. Kaup asserts that ithas 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 d m-eilks {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. 



