MANGABEYS. 105 



confined in the same cage with a young hanuman, whose gravity was sorely disturbed 

 by the unwearied activity and playfulness of its mercurial companion. Whilst the 

 white -nose was frolicking round the cage or playing with the spectators, the 

 hanuman would sit upon the perch, the very picture of melancholy and apathy, 

 with his long tail hanging down to the bottom ; but his attention was roused and 

 his security endangered every moment by the tricks of the restless little creature, 

 which in its sports and gambols continually caught the hanuman's tail, either to 

 swing itself out of the reach of the spectators, or, like a boy at his gymnastic 

 exercises, to assist it in climbing up to the perch. All this, however, was done with 

 great good-nature on both sides, and it was highly diverting to see the playful 

 innocence of the one, and the gravity with which the other regarded it, like a fond 

 parent enjoying the innocent follies of a favourite child." 



THE LUDIO MONKEY (Cercopithecus ludio). 



The last of the guenons that we shall notice is the ludio monkey, which is 

 another of the white-nosed group. Its fur is black, profusely grizzled with grey ; 

 the chin, chest, and the inner sides of the upper arms being white ; while the temples, 

 nape of the neck, shoulders, and the greater portions of the limbs, as well as the 

 end of the tail, are pure black. The white spot on the nose has an oblong shape, 

 and is higher than broad. 



The species is said to range into Central Africa. The red-eared monkey (C. 

 erythrotis), which is likewise West African, differs from the other members of the 

 group in having red hairs on the nose and ears. 



THE MANGABEYS, OR WHITE-EYELID MONKEYS. 

 Genus Cercocebus. 



The mangabeys, or, as they are often called, white-eyelid monkeys, comprise a 

 small group of four West African species, which, while agreeing in all external char- 

 acters with the guenons, are distinguished by the presence of a projecting heel at the 

 hinder end of the last molar tooth on each side of the lower jaw, so that the crown 

 of this tooth carries five, in place of four tubercles. In this respect the mangabeys 

 agree with the great group of macaques, which follow next in the series ; and on 

 this ground these monkeys have been separated from the guenons to form a distinct 

 genus under the name of Cercocebus. There has been much discussion as to the 

 advisability of thus separating the mangabeys, but it has at least the advantage of 

 somewhat restricting the unwieldy group of the guenons. 



The name Mangabey, it may be observed, is taken from the district Mangabe, 

 or Manongabe, in Madagascar, and was applied by the French naturalist Buffon to 

 these monkeys, from the mistaken idea that they came from that island, which in 

 his time appears to have been a kind of refuge for the destitute, in regard to animals 

 whose habitat was unknown. In spite, however, of this totally erroneous origin the 

 name is a convenient one, and has been subsequently almost universally adopted 

 for this group of monkeys. 



