SIMIAD.E. 529 



congeners ; and from what observations the Author has been able to make 

 upon living individuals, it is, when adult, as savage and irritable as the 

 rest. Buffon and Fred. Cuvier, however, commend it for its gentleness, 

 intelligence, and the absence of those evil passions so prevalent through- 

 out the tribe. It is from young individuals, most probably, that they 

 have formed their opinions ; but we well know how the temper and 

 disposition of all the Simiae alter with their age, and how the most lively 

 and good-tempered, while in adolescence, become irascible and revengeful 

 when arrived at maturity ; such is the case with the Mona, of which the 

 males in particular are malicious and petulant ; the adult females are less 

 so ; and the young of both sexes are playful. Fred. Cuvier, however, 

 is correct in attributing to it gracefulness of movement and beauty of 

 colouring, and, for these, it claims our admiration. 



DIADEM MONKEY. 



CERCOPITHECUS LEUCAMPYX. 



La Diane, Cercopithecus Diana. F. CUVIER and GEOFFROY, Mamm. vol. iii. June, 1824. Faem. 



(Simla leucampyx FISCHER, Syn. Mamm. p. 20. 1829.) 



Cercopithecus Diademetus . . . ISIDORE GEOFFROY, in Voy. Belang. Zool. 51. 



Cercopithecus dilophos in Mus. Lugd. Bat. and OGILBY, in Menageries, partii. 1838. 



SPECIFIC CHARACTERS. General colour black, finely grizzled on the back and sides with 

 white, or yellowish white ; a white frontal semilunar mark ; tail black at the apex ; 

 whiskers hoary. 



LOCALITY. Western Africa. 



DESCRIPTION. Fur full, and rather harsh ; teeth large ; form, robust 

 and powerful ; the top of head, the occiput, the back of the neck, the 

 shoulders, the belly, and all the limbs, inside and out, are of a deep 

 black ; a white semilunar streak (with the convex edge above) crosses 

 the forehead, its breadth, in the middle, being three quarters of an inch ; 

 the hairs on the cheeks are close, and grizzled with black and white annu- 

 lations ; the back, beyond the shoulders, the sides and haunches, and the 

 posterior margin of the thighs, are of a beautiful grizzly grey, each hair 

 being ringed, alternately, five or six times with black and white ; the tail 

 is grey at the base, becoming darker towards the apex, which is black and 

 pencilled ; the hairs on the upper lip and chin, are white and short, 

 with a few black intermixed ; the face is of a violet black. 



ft. in. 



Length of head and body Ill 



Ditto tail 2 8 



The preceding details were taken from the orignal specimen in the 

 Paris Museum (an adult female, which lived many years in the Jardin des 

 Plantes), described and figured by F. Cuvier, under the title of Diana, 

 though with considerable hesitation. 



VOL. I. 3Y 



