THE MANGABEYS. 39 



CercoJ^ithecus ceihiops, Kuhl. Beitr. Zoo!., p. 97 (1820, nee 



S. cBthiops, Linn.). 

 Cercopithecus cethiopicuSy F. Cuvier, Mamm., livr. xxxv. (Dec, 



1821). 

 Cercocebus collaris, Gray, List Mamm. Brit. Mus., p. 7 (1843) ) 



id.. Cat. Monkeys Brit. Mus., p. 27 (1870); Schl., Mus. 



Pays-Bas, p. 96 (1876.) 

 Characters. — Hair on the crown of the head not elongated, 

 but directed backward ; whiskers small, directed backward ; 

 no beard. Face, ears, hands, and callosities nude ; tail long, 

 carried over the back. 



Face, ears, and hands black ; the top of the head rich red- 

 dish-brown ; whole of upper side of the body, hinder part of 

 the shoulders, back, external surface of both pairs of limbs, 

 feet, and tail, greyish slate-colour ; throat, breast, whole under 

 side of the body and inside of the limbs white, as are the nape 

 of the neck, sides of the face, the fore part of the shoulder, and 

 the front aspect of the arms, as far as the top of the fore-arm ; 

 in many species a somewhat broad wash of slate-grey crosses 

 the side of the face from the cheeks to below the ear. 

 Distribution. — West Coast of Africa. 



III. THE WHITE-CROWNED MANGAEEY. CERCOCEBUS ^THIOPS 



(Hate XX Vi I.) 

 Simla ccfhiopSj Linn., Syst. Nat., i., p. 39 (1766). 



Cercocebus cethiops, Geoffr. Cat. Meth. Primates, p. 25 (1851); 

 Gray, List Mamm. Brit. Mus., p. 7 ; id., Cat. Monkeys 

 Brit. Mus., p. 27 (1870) ; Schl., Mus. Pays-Bas, vii., p. 95 

 (1876). 



Cercopithecus lunulatus, Temm., Esquiss. Guin., p. 37 (1853). 

 Characters.— This species is very similar to C. collaris, but 



differs in being slightly darker above, and in having a spot on 



