The Descent of Man

vus paludosus, Rengger, ibid. s. 345.) Lastly, as
I am informed by Mr. Blyth, the mature male of
the beautifully coloured and spotted axis deer
is considerably darker than the female: and this
hue the castrated male never acquires.
The last Order which we need consider is that
of the Primates. The male of the Lemur macaco
is generally coal-black, whilst the female is
brown. (29. Sclater, 'Proc. Zool. Soc.' 1866, p. i.
The same fact has also been fully ascertained by
MM. Pollen and van Dam. See, also, Dr. Gray in
'Annals and Magazine of Natural History,' May
1871, p. 340.) Of the Quadrumana of the New
World, the females and young of Mycetes caraya
are greyish-yellow and like each other; in
the second year the young male becomes reddish-brown;
in the third, black, excepting the
stomach, which, however, becomes quite black
in the fourth or fifth year. There is also a strongly-marked
difference in colour between the
sexes of Mycetes seniculus and Cebus capuci-