The Descent of Man

male not only by his immense mane, but slightly
in the colour of the hair and of the naked
callosities. In the drill (C. leucophaeus) the females
and young are much paler-coloured,
with less green, than the adult males. No other
member in the whole class of mammals is coloured
in so extraordinary a manner as the
adult male mandrill (C. mormon). The face at
this age becomes of a fine blue, with the ridge
and tip of the nose of the most brilliant red.
According to some authors, the face is also
marked with whitish stripes, and is shaded in
parts with black, but the colours appear to be
variable. On the forehead there is a crest of
hair, and on the chin a yellow beard. "Toutes
les parties superieures de leurs cuisses et le
grand espace nu de leurs fesses sont egalement
colores du rouge le plus vif, avec un melange
de bleu qui ne manque reellement pas d'elegance."
(31. Gervais, 'Hist. Nat. des Mammiferes,'
1854, p. 103. Figures are given of the skull
of the male. Also Desmarest, 'Mammalogie,' p.