Red-eared Monkey. 
Cercopithecus erythrotis , Waterhouse, Proc. Zool. Soc. p. 59, 1838. 
This animal was originally described by G. R. Waterhouse, Esq., from an impeifect skin in the 
collection of the Zoological Society, but the accompanying figure has been taken from a perfect 
specimen contained in the British Museum. 
This beautiful little species is about the same size as the Moustache Monkey (Cercopithecus 
Ceplius), and has undoubtedly a close affinity to that animal; it may, however, be distinguished by 
the bright rusty red hairs which cover the ears internally, its brilliant red tail, and by the hairs in 
the region of the anus being also of a bright red. 
The hairs on the upper parts of the body are black, annulated with yellow : on the hinder part 
of the back the yellow assumes a deep golden hue; but, unlike the Moustache Monkey, the black 
prevails over the yellow. On the sides of the body, and the outer side of the hinder legs, the hairs 
are greyish ; and on the belly, and inner side of the limbs, they are greyish white. The fore-legs 
are blackish externally; a dark mark extends backwards from the eye to the ear; below this, on 
the cheeks, there is a tuft of white hairs, beneath which the hairs are grizzled black and yellow, 
in these respects bearing a close resemblance to the Moustache Monkey. 
Habitat, the Island of Fernando Po. 
Length of the head and body, seventeen inches ; tail, twenty-three. 
