Although Gray had taken the name which he received with this animal from the Leyden Museum and had employed it throughout in his catalogues, Temminck, the then Director of that great establishment, when he published his ‘Esquisses Zoologiques sur la Côte de Guiné’ in 1855, was not content to adopt it. He considered it “too vague,” as having been already applied to other species of Antelopes, and proposed to change it to _Cephalophus pluto_. Temminck informs us that this species is widely distributed on the coast of Guinea and is very common in the forests near the Dutch factories in that district, particularly in Ashantee, near Chama and Dabacrom. In the adjoining republic of Liberia, to the west of the Gold Coast, Mr. Büttikofer and his colleagues Sala and Stampfli obtained many specimens of this Duiker during their expeditions of 1879 and 1886. Dr. Jentink, in cataloguing their results, gives various localities in which it was met with--viz. at St. Paul’s River, Schieffelinsville, Junk River, Du Queah River, and Farmington River. The Liberian naturalists remark that the flesh of this Antelope has a remarkably strong bitter flavour, which they never observed in any other species of the group. This peculiarity is probably caused by some special food to which it is addicted. In his ‘Reisebilder aus Liberia’ Mr. Büttikofer informs us that the Black Duiker, known to the Liberians under the name of the Bush-Goat, is one of the commonest species of the group in that republic. Like all other members of the genus, it is exclusively an inhabitant of the high forests and bushy woods, coming out at night into the savannahs and plantations to get its food. Mr. Büttikofer repeats his statements as regards the unsavoury character of its flesh, and states that even the natives, who are by no means particular, in many cases refuse to eat it. Besides the immature female obtained by Pel, which forms the type of _Cephalophus niger_, the National Collection possesses skins of an adult female from Fantee and of a young individual from the Ankober River in Ashantee, both obtained by the native collector Aubinn. Our coloured figure of the Black Duiker (Plate XIV. fig. 1) was prepared by Mr. Smit under the direction of the late Sir Victor Brooke. It was probably taken from the mounted specimen in the British Museum, but of this we have no certain record. _August, 1895._ [Illustration: THE BOOK OF ANTELOPES, PL. XXI. _Wolf del. Smit lith._ _Hanhart imp._ Fig 1. The Blue Duiker. CEPHALOPHUS MONTICOLA. Fig 2. Maxwell’s Duiker. CEPHALOPHUS MAXWELLI. _Published by R. H. Porter._] 32. MAXWELL’S DUIKER. CEPHALOPHUS MAXWELLI, H. SM. [PLATE XXI. FIG. 2.] _Guévei_ (_Ant. pygmæa_), =F. Cuv.= H. N. Mamm. (fol.) iii. livr. lxi. (animal, ♀) (1826) (Senegal).