Archive image from page 546 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 MAMMALS—ORNAMENTAL COLORS. 533 lett informs me that all the hues become more pronounced in the male when adult, whilst in the female they remain as tney were during youth. According to the colored figures given by Solomon Miiller, the male of Semnopithecus chrysomelas is nearly black, the female being pale brown. In the Cercopithecus cynosurus and griseoviridis one part of the body, which is confined to the male sex, is of the most brilliant blue or green,
Archive image from page 546 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 MAMMALS—ORNAMENTAL COLORS. 533 lett informs me that all the hues become more pronounced in the male when adult, whilst in the female they remain as tney were during youth. According to the colored figures given by Solomon Miiller, the male of Semnopithecus chrysomelas is nearly black, the female being pale brown. In the Cercopithecus cynosurus and griseoviridis one part of the body, which is confined to the male sex, is of the most brilliant blue or green, and contrasts strikingly Fig. 69. Head of Male Mandrill (from Gervais, 'Hist. Nat. des Mam- miferes'). with the naked skin on the hinder part of the body, which is vivid red. Lastly, in the baboon family, the adult male of Cynocephalus hamadryas differs from the female not only by his immense mane, but slightly in the color of the hair and of the naked callosities. In the drill (C. leucophseus) the females and young are much paler-colored, with less green, than the adult males. No other member in the whole class of mammals is colored in so extraor- 36
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