File:The descent of man, and selection in relation to sex (1871) (14802958093).jpg

Identifier: descentofmansele02darw (find matches)
Title: The descent of man, and selection in relation to sex
Year: 1871 (1870s)
Authors: Darwin, Charles, 1809-1882
Subjects: Evolution Natural selection Heredity Human beings -- Origin Evolution
Publisher: London, J. Murray
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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with a line of chesnut-red over theeyebrows; the fur on the back is of a delicate grey, witha square patch on the loins, the tail and the fore-armsall of a pure white; a goiget of chesnut surmounts thechest; the hind thighs are black, with the legs chesnut-red. I will mention only two other monkeys on accountof their beauty ; and I have selected these as they pre-sent slight sexual differences in colour, which renders it ^^ Biites, The Naturalist on the Amazons, 18615, voL ii. p. 310. Chap. XVIIL QUADRUMANA. 311 in some degree probable that both sexes owe theirelegant appearance to sexual selection. In the mons-tache-monkey (Gercopithecus eephus) the general colourof the fur is mottled-greenish, with the throat white; inthe male the end of the tail is chesnut; but the face isthe most ornamented part, the skin being chiefly bluish-grey, shading into a blackish tint beneath the eyes,with the upper lip of a delicate blue, clothed on thelower edge with a thin black moustache; the whiskers
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Kig. 76. Gercopithecus Diana (from Brehm). 312 SEXUAL selection: mammals. PartIL are orange-coloured, with tlie upper partblack, forminga band which extends backwards to the ears, the latterbeing clothed with wdiitish hairs. In the ZoologicalSocietys Gardens I have often overheard visitors ad-miring the beauty of anotlier monkey, deservedly calledCercopithecus Diana (fig. 76) ; the general colour of thefur is grey; the chest and inner surface of the fore-legsare white ; a large triangular defined, space on the hinderpart of the back is rich chesnut; in the male the innersides of tJie thighs and the abdomen are delicate fawn-coloured, and the top of the head is black ; the face andears are intensely black, finely contrasted with a wdiitetransverse crest over the eye-browns and with a longwhite peaked beard, of which the basal portion isblack.^^ In these and many other monkeys, the beauty andsingular arrangement of their colours, and still more thediversified and elegant arrangement of

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