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and, as noticed by Gray himself, ‘‘ assumed all the appearance, as it grew up, 
of C. badius.” 
As recorded by Temminck in his ‘ Esquisses Zoologiques sur la Céte de 
Guinée,’ the well-known Dutch collector Pel met with this Antelope in 
Ashantee and Sierra Leone, where he states that it is found, although some- 
what rarely, in the littoral forests, showing itself only at night. Two other 
collectors from Holland, Biittikofer and Stampfli, obtained specimens of this 
species on the Junk River in Liberia, which were likewise transmitted to the 
Leyden Museum. 
Examples of this species in the British Museum were procured in Fantee 
by the native collector Aubinn; and we may therefore state confidently that 
the typical form of C. dorsalis inhabits the whole coast-region of Western 
Africa from Liberia to the mouth of the Niger. 
When, however, we pass southwards of the delta of the Niger and arrive at 
the higher ground of the Cameroons the typical C. dorsalis seems to be 
replaced by a slightly different local form, which Thomas in 1892 characterized 
as a subspecies, C. dorsalis castaneus. This Antelope is rather larger than 
the typical form and the ears are apparently rather larger. The chestnut 
superciliary stripe is indistinct, far less bright than in the typical form, and 
the general colour of the head is darker and duller. ‘The typical specimen of 
this subspecies, which is in the collection of the British Museum, is a female 
obtained by Crossley in the Cameroons. Besides the colour-differences just 
mentioned the form of the skull, which is figured in the ‘ Hand-list of Rumi- 
nants’ as that of C. badius (op. cit. pl. xxx. fig. 1), is likewise peculiar. But 
further specimens and more information are necessary before we can decide 
whether it will be advisable to give the Cameroons animal the full rank of 
a species. 
We have already mentioned the existence of a living specimen of this 
Duiker in the Derby Menagerie. Living specimens of it have also been 
received on more than one occasion by the Zoological Society of London. In 
1861 an example was purchased of a dealer in Liverpool and lived more than 
two years in the Society’s Gardens. A second specimen, quite immature on 
its arrival, was purchased in February 1866 and was shortly afterwards | 
described by Gray as Cephalophus breviceps. This was a female, and, being 
placed in the same compartment of the Gazelle-sheds as a male of the allied 
