THE GUENONS 



ior 



Finally, Wolf's monkey, which has light under parts, differs from the other 

 species in the ferruginous color of the legs, as well as by the light patches on the 

 inner sides of the arms and thighs. This species is interesting as being the only 

 representative of the rnona group (if we exclude the larger Syke's monkey) which 

 is found eastward of Western Africa. 



THE BLACK-BELLIED MONKEY (Cercopithectis pinto) 



The black-bellied or pluto monkey, from Angola, is another West Afri- 

 can species, readily distinguishable by 

 the dark color of the under parts of 

 the body and the inner sides of the 

 limbs, which are typically of a reddish- 

 black. 



Like the species of the mona group, 

 there is no beard, but large bushy 

 whiskers, well shown in the accompany- 

 ing figure. 



The general color of the fir is black, 

 finely grizzled with gray ; the forehead 

 has a white band, and the sides of the 

 forehead, as well as the shoulders, chest, 

 tail, and limbs, are entirely black, and 

 there is no white on the haunches in the 

 typical form. 



Dr. Anderson identifies, however, 

 with this species the so-called diadem 

 monkey (C. leucocampyx} , which also 

 has black under parts, but is distin- 

 guished by a white streak across the 



THE BI,ACK-BEI.UED MONKEY, 

 haunches. (From Gray, Proc. ZooL Soc.) 



THE MOUSTACHE MONKEY (Cercopithecus cephus) 



In all the round-headed and short-muzzled guenons yet mentioned the nose and 

 body are of the same color. There is, however, another division of the guenons, 

 in which the color of the nose differs from that of the body. Out of the seven 

 species of this subgroup recorded by Dr. Gray we shall select for notice the four 

 which have been represented of late years in the Gardens of the London Zoological 

 Society, premising that the whole seven are West African. 



The leading characteristics of the moustache monkey are to be found in the 

 presence of a triangular blue mark on the nose and in the yellow whiskers. ' Its 

 general color is olive-green, speckled with yellow ; the throat and under parts being 

 gray, the face and temples black, and the feet and hands blackish. 



