424 
APPENDIX. 
[B. 
BEPTILIA, 
By JOHN EDWARD GRAY , Esq., M.G.S. 
Genus CHLAMYDOSAURUS. Gray, 
Capite depressa ; membrana tympani apertS,. 
Guld pennulis plicatis ornata, 
Pedibus quatuor. 
Digitis quinque, elong'atis, siinplicibus. 
Cauda elongata, subcylindrica. 
Animal scaly ; the head depressed ; the nostrils placed 
on the side, midway between the eyes and the end of the 
head ; the drum of the ear naked ; the front teeth conical, 
awl-shaped (eight in the upper, and four in the lower jaw) ; 
the hinder ones largest ; the side or cheek teeth compressed, 
short, forming a single ridge, gradually longer behind; 
tongue short, fleshy, with an oval smooth disk at each side 
of the lower part of its front part ; neck rather long, furnished 
on each side with a large plaited frill, supported above by a 
crescent-shaped cartilage arising from the upper hinder part 
of the ear, and, in the middle, by an elongation of the side 
fork of the bone of the tongue; body compressed; legs 
rather long, especially the hinder ones ; destitute of femoral 
pores; feet four, with five toes, the first having two, the 
second three, the third four, the fourth five, and the little 
finger and toe three joints ; claws compressed, hooked ; tail 
long, nearly round, scaly. 
This genus appears to be nearly allied to the AgamcBfhut 
differs from them in the peculiar frill that is appended to 
the neck. 
