133 
Whether the horn from Sierra Leone, figured and described by Afzelius 
in his essay on Antelopes, published in the ‘Nova Acta’ of the Society of 
Sciences of Upsala in 1795, and subsequently referred to by Hamilton Smith 
and other authors, really belonged to the present species is somewhat 
uncertain, although such may very possibly have been the case. The first 
trustworthy introduction of this species to scientific literature is therefore 
due to Ogilby, a well-known authority on the Ruminants, who in 1856 
established his Antelope eurycerus in a paper read before the Zoological 
Society of London on November the 22nd of that year. Ogilby’s materials 
consisted of ‘‘two pairs of horns, one attached to the skull, the other to the 
integuments of the head,’ which had then “long existed in the Society’s 
collection.” Their origin was unknown, but they were believed to have 
come from Western Africa. These specimens, we may add, are now in the 
British Museum, to which they were transferred by the Zoological Society 
in 1858. One of the pairs was figured by Gray in the volume of the 
‘Gleanings from the Knowsley Menagerie,’ published in 1850. 
In 1853 Temminck recorded the existence of a pair of horns of this 
species in the Leyden Museum, and gave its vernacular name as the 
“Trommé” of the Mandingos of Western Africa. 
With this exception no addition appears to have been made to our 
knowledge of this Antelope until 1860, when Mr. P. B. Du Chaillu, who 
had met with it during his excursions in the interior of Gaboon from 1856 
to 1859, described it before the Boston Society of Natural History as a new 
species, under the name Tragelaphus albo-virgatus. In the report of his 
paper published in the ‘ Proceedings’ of that Society we find its locality 
given as the “forests about the head-waters of the Fernand-Vaz in the 
Aschankolo Mountains, 60 miles south of the Equator, and 140 from the 
coast.” In the narrative of his travels, published in 1861, Mr. Du Chaillu 
writes of the same Antelope as belonging to the fauna of the ‘“ Rembo 
Region,” the Rembo being one of the rivers that flows from these mountains, 
and tells us that it is “ very shy, swift of foot, and exceedingly graceful in 
its motions.” The full-page steel engraving that accompanies these remarks, 
which, by the kindness of Messrs. Murray, we are enabled to reproduce 
(fig. 103, p. 134), is stated to have been taken from a well-preserved specimen 
in his collection. The native name is given as ‘‘ Bongo.” 
