44 
abruptly bent backwards as those of B. caama, and its head is at once distin- 
guishable from that of the Cape species by the entire absence of black on 
the face. 
No complete specimen of the skin of B. jacksoni having as yet been 
received, we are unable to give a coloured figure of this animal; but the 
accompanying woodcut (fig. 5, p. 43) represents the typical skull of this 
species in the British Museum. 
There are no other specimens of this Antelope in the National Collection, 
except the doubtful heads of Petherick and Bohndorff already referred to. 
May, 1894. 
