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Dimensions :— 2. Height at shoulder 34 inches, ear 4, hind foot 13:5. 
Skull (¢): basal length 10°3 inches, greatest breadth 4:9, muzzle to 
orbit 6°5. 
Hab. West Coast of Africa, from Liberia to Angola. 
We commence our history of this numerous group of Antelopes, for which 
we adopt the term “ Duiker” (7. e. “‘ Diver”), originally given by the Boers 
of the Cape to C. grimmi, as a vernacular name, with two species readily 
distinguishable from the remainder by their greater size, but not apparently 
otherwise divergent in structure. ‘These are the Yellow-backed Duiker and 
Jentink’s Duiker. 
The eminent Swedish naturalist, Adam Afzelius, a pupil of Linnzus, and 
subsequently editor of his master’s autobiography, resided for two years 
(1792-94) on the West Coast of Africa, as botanist to the Sierra Leone 
Company. Amongst numerous papers embracing the results of his researches 
on the West-African fauna and flora, he published in 1815, in the ‘ Nova 
Acta’ of the Royal Society of Sciences of Upsala, a learned treatise on 
Antelopes generally, and specially upon those of Guinea. In the course of 
this memoir he described and figured for the first time the present species, 
calling it Antilope silvicultriz, as being the “ Bush-Goat” of the colonists. 
Afzelius speaks of it as not uncommon in the hills round Sierra Leone, 
particularly in the districts adjoining the rivers Pongas and Quia. Here it 
is not met with among the rocks, but inhabits the lower tracts of the bush, 
either solitary or, in the rutting-season, in pairs, and occasionally in small 
herds. It hides itself in the bush by daytime, but comes out in the early 
morning to feed in the open spaces, where the hunters lie in wait for it. Its 
flesh is stated to be much esteemed as food, although it has a strong musky 
scent, particularly at certain seasons of the year. 
After Afzelius subsequent authors were for many years content to copy 
his notes and description, and we get no further information on the subject 
till we come to 1850, when the species was figured in the ‘ Knowsley 
Menagerie’ by Waterhouse Hawkins from specimens living in that magnifi- 
cent collection. In this set of drawings it appears twice—first on plate viii. 
fig. 1 (erroneously named Cephalophus punctulatus), which seems to have 
been taken from a young individual of this Antelope; and secondly on 
plate xxiil. fig. 3, as Cephalophus sylvicultrix, in which the adult, or at any 
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