THE GUENONS. 53 



Characters.— General colour of back, sides, and outer aspect 

 of the hind-limbs, black, speckled with yellowish-grey, or with 

 golden-yellow on the hinder part of the back— the hairs being 

 black, ringed with yellow or gold respectively; face nearly 

 nude, except for a few short hairs on the upper part of the nose ; 

 region round the eyes, livid blue ; nose red ; chin white ; a 

 black bar from the eye to the ear ; below this a broad white 

 whisker-streak on the cheeks, beneath which again there arises 

 from the corner of the mouth and cheeks another black, yellow- 

 ringed, tuft of hair ; ears rusty-red internally ; external aspect 

 of the fore-limbs blackish ; throat, under surface of the body, 

 and inner side of the Hmbs greyish-white ; tail bright rufous, 

 except for a dark line along its upper surface ; anal hairs bright 

 red. Length of body, 17 inches ; tail, 23 inches. 



Distribution. — This rare and very beautiful Monkey has its 

 home in the island of Fernando Po. 



XII. THE MOUSTACHED GUENON. CERCOPITHECUS CEPHUS. 



Swiia cephus, Linn., Syst. Nat., i., p. 39 (1766). 



Cercopithecus cephus (Moustac), F. Cuvier, Hist. Nat., Mamm., 



i., livr. xxvi. (1821) ; Martin, Mammif. An., p. 532 (1841) ; 



Wagner, in Schreber's Saugeth. Suppl., v., p. 49 (1855); 



Gray, P. Z. S., 1868, p. 182 ; id.. Cat. Monkeys Brit. Mus., 



p. 20 (1870) ; Schleg., Mus. Pays-Bas, vii., p. 91 (1876) ; 



Scl., P. Z. S., 1893, p. 246. 

 Le moustac, Audebert, Hist. Nat. Singes, Fam. iv.. Sect, ii., 



p. 19, fig. xii. 

 Characters. — Face and nose naked ; muzzle short ; whiskers 

 thick and bushy, directed backward and downward. Face, ex- 

 cept the lips, violet-blue ; margin of the upper lip black, this 



