19 
GROUP OF MONKEYS. 
{Cercopithecus petaurista), and the Mangabey {Cercocebus 
fuliginosus') are all natives of South and West Africa. 
The Macaques form a large genus of Monkeys, some of 
them of large and powerful build, and, for the most part, of 
savage and treacherous dispositions. They are all natives of 
Asia and the adjacent islands. Among them are the Common 
Macaque {Macacus cyno77iolgus), the Pig-tailed Macaque 
{Macacus nemestrinus) , the Rhesus Monkey {Macacus ery- 
thrceus'), the Toque {Macacus pileatus), and the Bonnet INIa- 
caque {Macacus radiatus'). 
The genus Cynocephalus, or Dog-headed Monkeys, form the 
group known as Baboons, among which are some of the largest 
and most fierce of the order. The Chacma {Cynocephalus 
porcarius), the Guinea Baboon {Cynocephalus sphinx), the 
Mandrill {Cynocephalus 77ior7no?i), the Drill {Cynocephahis 
leucophceus'), and the Anubis Baboon {Cynocephalus a7iubis), 
are all natives of Africa. They can all be recognized by 
