Campbell’s Monkey. 
Cereopithecus Campbelli, Waterhouse, Proe. Zool. Soc. 1838, p. 61. 
This species appears most closely allied to the Cereopithecus Mona of Schreber; it has not, 
however, the large white spot on the upper part of each thigh which serves to characterize that 
animal. 
This monkey is named after the late Governor of Sierra Leone, Major Campbell, who brought 
an imperfect specimen of it from that country; my specimens were said to be from the Mandingo 
Country. The only perfect specimen I have seen is now living in the gardens of the Society. 
The most remarkable characters in the animal are its long fur, and the hairs being divided 
on the back, as in most of the species of the genus Colobus. The average length of the hairs of 
the back is about two and a half inches; on the hinder half of the back, however, they exceed 
three inches. These hairs are grey at the base, and the remaining portion of each hair is black, 
with broad yellow rings, the latter colour prevailing. On the posterior half of the body, and 
the outer side of the hinder legs, the hairs are of a deep slate grey, and almost of an uniform 
colour; some of those on the middle of the back are obscurely freckled with deep yellow, and 
those on the thigh are very indistinctly freckled with white. The belly, inner side of limbs, fore 
part of thigh, chest and throat, are white. The hairs of the cheeks and sides of the neck are very 
long, and of a greyish white colour, grizzled towards the apex with black and yellow; some 
whitish hairs, tipped with black, are observable across the fore part of the forehead. The inner 
side of the ears is furnished with very long hairs of a greyish white colour, obscurely annulated 
with grey and pale yellow; these hairs vary from three-quarters of an inch, to an inch in 
length. The fore legs are black externally. The hairs on the upper side of the tail are grizzled 
with black and dirty yellow, and on the under side, with black and brownish white. The apical 
portion of the tail, which is furnished with longish hairs, is black, the black hairs occupying 
about one-third of the whole length of the tail. 
