18/4.] FROM THE CAMAROONS. 443 



The colour is a mixture of yellow, greenish, and black ; the first 

 predominates on the body, the second on the legs and tail, and the 

 last on the head. 



The largest specimen of this very extraordinary species is 9 inches, 

 of which the tail takes 4 inches. 



Rhamvholeon spectrum. (Plate LVII. figs. A, A'.) 



Chamceleo superciliaris*, Buchholz, Berlin. MB. 18/4, p. 81 (nee 

 Kuhl). 



Chamceleo spectrum, Buchholz, I. c. p. 298, figs. 5 & 6. 



The tail of this species is unusually short, being only one third of 

 the total length in the male and one fourth in the female. It is very 

 much thickened for two thirds of its length in the male, leaving only 

 the terminal third prehensile. Otherwise there is no difference 

 between the sexes, both sexes having a very short, soft, granulated, 

 rostral appendage. The eyebrows are produced into a short, trian- 

 gular, flexible, horn-like prominence, the two horns being connected 

 by a transverse ridge which crosses the concave forehead. No dorsal 

 crest, which is replaced by a series of very small tubercles, each 

 formed by a group of enlarged granules, these prominences being 

 more distinct on the tail than on the trunk. Occiput without pro- 

 minent ridge or lobe ; body covered with extremely small granules, a 

 few of which are somewhat larger than the others. In the female 

 the throat and lower side of the tail are provided with rather 

 numerous conical tubercles. 



The tail is so short that it can serve as a prehensile organ in a 

 very subordinate manner only. This defect is compensated by the 

 development of an additional sharp denticle at the inner base of each 



V 



Profile of left fore foot of Rampholeon spec/rum. 



claw, and of a spine vertically projecting from the flexor side of each 

 finger and toe, which must immensely strengthen the power of the 



* Chamakon superciliaris is confined to Madagascar ; two of the three speci- 

 mens in the British Museum aro from that island ; the locality of the third 

 (typical) specimen is not known. Three weeks after the present communication 

 had been sent to the Society, I received through the kindness of Prof. Peters an 

 early separate copy of Dr. Buchholz's second paper on these Chameleons, in 

 which, however, only the superficial characters of this interesting form are noticed. 



29* 



