Chap. XYIII. 
OKNAMENTAL COLOUES. 
'289 
ing season, in tlie effects of emasculation on this change, 
and in the young of both sexes being undistinguish- 
able from each other. In the Antilope niger the male is 
black, the female as well as the young being brown ; in 
A, sing-sing the male is much brighter coloured than the 
hornless female, and his chest and belly are blacker; 
in the male A, caama, the marks and lines which occur 
on various parts of the body are black instead of as 
in the female brown ; in the brindled gnu (A, gorgon) 
the colours of the male are nearly the same as those 
of the female, only deeper and of a brighter hue.” 
Other analogous cases could be added. 
The Banteng bull (Bos sondaicus) of the Malayan 
archipelago is almost black, with white legs and but- 
tocks ; the cow is of a bright dun, as are the young 
males until about the age of three years, when they 
rapidly change colour. The emasculated bull reverts 
to the colour of the female. The female Kemas goat 
is paler, and the female Capra segagrus is said to be 
more uniformly tinted than their respective males. 
Deer rarely present any sexual differences in colour. 
Judge Caton, however, informs me that with the males 
of the Wapiti deer (Cervus Canadensis) the neck, belly, 
and legs are much darker than the same parts in the 
female ; but during the winter the darker tints gradually 
fade away and disappear. I may here mention that 
Judge Caton has in his park three races of the Vir- 
ginian deer, which differ slightly in colour, but the 
differences are almost exclusively confined to the blue 
On the Ant. niger, see ‘Proc. Zool. Sec.’ 1850, p. 133. With re- 
spect to an allied species, in which there is an equal sexual difference 
ill colour, see Sir S. Baker, ‘ The Albert Nyanza,’ 1866, vol, ii. p. 327. 
For the A. sing-sing, Gray, ‘ Cat. B. Mus.’ p. 100. Desmarest, ‘ Mam- 
nialogie,’ p. 468, on the A. caama. Andrew Smith, ‘Zoology of S. 
Africa,’ on the Gnu. 
VOL. II. 
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