260 ALLEN’S NATURALISI’S LIBRARY. 
General colour of fur black, fringed with yellow ; centre of the 
crown of head, crest, nape (extending down the back), and 
sides of the body black ; beard citron-yellow ; callosities and 
surrounding naked skin violet ; genital and anal regions 
scarlet. 
Female and Young Male.—Facial rugosities less marked out- 
wardly, as well as on the skull, than in the adult male, and the 
purple colour of the grooves wanting. The nose is black, not 
scarlet. 
A hybrid between a female of this species and a male 
Macaque (JZ. cynomologus) was born in the Zoological Gardens 
of London in October, 1878. 
Distribution.—West Africa, from Senegambia to the Congo. 
Habits—These hideous and extraordinary animals live to- 
gether in large companies, and are a terror to the natives. 
They are less ill-dispositioned when young, but when adult, they 
are very savage. ‘They are nearly omnivorous, but fruits and 
insects form their chief food. When the Mandrill is in any 
way excited, the brilliantly-coloured naked parts of the skin 
are said to become still more vividly coloured. 
II. THE DRILL. PAPIO LEUCOPHUS. 
Simia leucophea, F. Cuvier, Ann. Mus., ix., p. 477, pl. 37 
(1807); id. Hist. Nat. Mamm., livr. iv., p. 637 (1807). 
Papio leucophea, Gray, List Mamm., Brit. Mus., p. 10 (1843). 
Cheropithecus leucopheus, Gray, Cat. Mamm., Brit. Mus., p. 
35 (1870). 
Papio leucopheus, Schi., Mus. Pays Bas, vii., p. 131 (1876). 
(Plate XX/Z.) 
Characters.—Somewhat similar to C. mazmon, but body less 
