65 



"Regarding then this species as hitherto undescribed, I propose for 

 it the name of Chamaleon Bibroni, as a tribute of respect to M. Bibron, 

 of the Musee d'Histoire Naturelle of Paris, the merit of whose work 

 on Reptiles, from which I have derived so much advantage, I am 

 anxious thus publicly to acknowledge ; and to whom, during his late 

 visit to London, I am indebted for assistance and information, while 

 engaged with the collection of Sauria, in the possession of this So- 

 ciety. 



"The characters of Cham. Bibroni may be summed up as follow : 

 Casque (or upper surface of the skull) flat, with a very slight occi- 

 pital keel ; contracted and concave between the eyes, rounded pos- 

 teriorly : superciliary ridge very little elevated, and becoming obso- 

 lete over the nostrils ; a small flap on each side from the posterior 

 edge of the casque lies on the neck ; the dorsal ridge and median 

 line, both of the throat and belly, destitute of a denticulated crest. 

 The grains of the body and limbs small and close-set, those of the 

 casque flat and angular. 



Cham;eleon Bibroni. Galea j)land ; rnx apud occiput carinatd ; 

 inter oculos angustd et concavd ; postice rotundatd, et loho par- 

 vulo utrinquc instructd ; margine superciliari parum elevato, et 

 super nares ohsoleto ; culmine dorsali, linedque media per gu- 

 lam et abdomen tendente, absque denticulis ; corpore granis par- 

 vis et confertis tecto ; gated lamellis angularibus. 



Longitudo corporis cum capite 4 unc. 



caud(e 5^ 



Hab. in Insula Fernando Po. 



" In proportion to the size of the body the head of Cham. Bibroni 

 is short, and particularly the muzzle, which is very acute at the apex. 

 Viewed from above the helmet it would present an elongated oval, 

 rounded behind and acute anteriorly, were it not for its contraction 

 between the eyes, which is not the case in Ch. Senegalensis . The 

 accessory lobes at its posterior part are very small, and might easily 

 be overlooked. Perhaps, however, they may be larger in the male, 

 (for the present individual, it is to be observed, is a female,) but of 

 this I have no means of judging. The length and slendemess of 

 the tail are remarkable. The granulations of the body are small 

 and even. The general colour is purplish black, passing on the 

 sides of the belly, on the loins, and posterior limbs, into olive gi-een ; 

 the inside of the limbs, and the median line of the abdomen, are pale 

 reddish yellow." 



