THE GUENONS 95 



few opportunities of observing their habits, but they appeared to differ but little 

 from those of macaques, except that Cercopithecus is a quieter animal and less 

 mischievous. In captivity they are well known as excessively docile and good- 

 tempered, and fairly intelligent." 



THE GREEN MONKEY {Cercopithecus callitrichus')* 



One of the commonest of the guenons usually to be seen in menageries is the 

 West African green monkey. The color of the fur may be described as a mixture 

 of black and yellow, giving a general dark green hue to the upper parts, the crown 

 of the head, the hands, feet, and the upper part of the root of the tail being blacker. 

 There is generally no light band on the forehead, and if this be present it is very 

 narrow. The whiskers, throat, and under side and end of the tail are j^ellowish, 

 sometimes tending to orange ; and as in the last species, the base of the root of the 

 tail is gray. 



This monkey, of which we give a representation in the illustration on p. 93, is 

 closely allied to the grivet, from which it may be distinguished by the more yellow- 

 green hue of its upper parts, the yellowish whiskers, and the general absence of the 

 white band on the forehead. 



The green monkey is about the size of a large cat, the length of the head and 

 body being 16 or 18 inches, and that of the tail rather more. It is one of the 

 hardiest of the guenons, on which account it is so frequently seen in confinement, 

 as it bears our climate well. Although gay and gentle during youth, it usually be- 

 comes morose and vicious when old, and is therefore not one of the species usually 

 selected for exhibition by traveling organ-grinders. Like the other members of the 

 group, it does not appear that the green monkey ever utters a sound when in cap- 

 tivity, and from an early account of the species it appears to be similarly silent in 

 its wild condition. 



THE MOZAMBIQUE MONKEY {Cercopithecus rufoviridis) 



The guenons are also represented in the Mozambique and Zambesi districts of 

 the East Coast, although far less abundantly than on the West Coast. The Mozam- 

 bique monkey agrees with the vervet in having the root of the tail and adjacent 

 regions of a ferruginous red, but differs in the more yellowish-gray tint of the fur of 

 the upper parts, which tends to a blacker hue on the crown of the head, the tail, 

 and the outer sides of the limbs, while the under parts and the inner sides of the 

 limbs are pure white, instead of reddish white. 



* Frequently known as Cercopithecus sabcsus* 



