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of tail white. Fore legs white on the inner side at the base and behind the 
knee; spots on the pasterns faint; hind legs white on the inner side down 
to the hock. 
Adult female. Without horns, but nearly resembling the adult male in 
colour. 
The skull of an adult male (type) gives the following measurements :— 
Basal length 10°5 inches; orbit to muzzle 6:5; greatest width 4:5; horn 
21 in straight line, 25°75 round the curve. Hoof: length along front 4:10; 
thickness from back to front 1:5. 
These descriptions are taken from the skin and skull of an adult male 
(the type), obtained by Mr. Coryndon on the Barotze River, and kindly lent 
to us by the Hon. Walter Rothschild, M.P. 
In his original diagnosis of Limnotragus selousi, Mr. Rothschild took 
Fig. 111. 
Outer view of the right foot of Selous’s Sitatunga. 3 nat. size. 
the characters of the female from the specimen of this sex, from Lake Ngami, 
now living in the Zoological Society's Gardens. In the specimens of 
L. selousi, however, from the Barotze River the immature female is of a rich 
red colour, inclining to black in the dorsal region, whereas the female from 
Lake Ngami was at the time of its arrival in England, when only half-grown, 
of the same nearly uniform tint as it is now when fully adult. Moreover, 
Mr. Selous, who has seen many skins of this Antelope from the Chobé, 
kindly informs us, in reply to an inquiry on this point, that the young are, 
according to his experience, never rufous in colour; although when newly 
born they are marked with white stripes and spots which subsequently 
disappear. 
We cannot explain these discrepancies at present, but must leave the 
matter as it stands for the investigation of future observers. 
