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but little affected. Hinder back with a marked black central dorsal streak, 
commencing vaguely at the withers, becoming narrower and more sharply 
defined posteriorly, and running on to the tail. Limbs dull yellowish, except 
on the phalanges, where they are brown or black. 
Horns in the direct line of the nasal profile; those of male about four inches 
long, conical, shghtly incurved, much broadened basally, their greatest basal 
diameter going 24 or 3 times in their length. Female about an inch and a 
half in length, conical, smooth, broad at base, pointed terminally, their length 
not twice their basal diameter. 
Skull with a very considerable convexity in the frontal region. Anteorbital 
fossee shallow. -Posterior palate with the three notches, median and two 
lateral, all at about the same level. 
Dimensions :— ¢. Height at withers 22 inches, ear 3, hind foot 9°4. 
Skull (¢, not fully adult): basal length 7:2 inches, greatest breadth 3:5, 
muzzle to orbit 4:4. 
Hab. Coast of West Africa, from Liberia to the Cameroons. 
Ogilby’s Duiker, which we now proceed to consider, is closely allied to the 
last species, and like it is of a generally rufous colour with a black dorsal 
stripe, but it is immediately distinguishable by its pale yellowish face and 
flanks. It was first described by Waterhouse, as long ago as 1838, from 
specimens presented to the Zoological Society’s Museum by Mr. George Knapp, 
who had received them from the island of Fernando Po, and was named after 
William Ogilby, formerly Secretary to the Society and a great authority upon 
the Ruminant Mammals. When the Zoological Society's Museum was 
broken up the typical specimen passed into the British Museum, where it 
now is. About ten years afterwards Ogilby’s Duiker was figured by Fraser in 
his ‘Zoologia Typica,’ probably from the typical specimen. Fraser, who 
had visited Fernando Po himself, states that this Antelope is extremely 
common in that island and is much esteemed by the natives as an article of 
food. In his conjecture that its range “is confined to that island,” he was 
no doubt in error, as we have several trustworthy notices of its occurrence 
elsewhere. 
Specimens of the present species are recorded by Dr. Jentink as having been 
procured on the Du Queah and Farmington Rivers in Liberia by Bittikofer 
and Stampfli. These are in the Leyden Museum, as is also a female 
