Chap. XVIII. OENAMENTAL COLOURS. 289 



ino: season, in the effects of emasculation on this cliano-e, 

 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 youug 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 sondaieus) 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 Cafra eegagrus 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 \\\i\\ 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 exclusivelv confined to the blue 



26 On the Ant niger, see 'Proc. Zool. Soc' 1850, p. 133. AVitli re- 

 spect to an allied species, in which there is an equal sexunl difference 

 in 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, ' Mani- 

 nialogie,' p. -168, on the A. caama. Andrew Smith, 'Zoology of S. 

 Africa,' on the Gnu. 



VOL. II. U 



