Archive image from page 540 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 MAMMALS—DEVELOPMENT OF HAIR. 527 in the male than in the female, as in the Mycetes caraya and Pithecia satanas (fig. 68). So it is with the whiskers of some species of Macacus,' and, as we have seen, with the manes of some species of baboons. But with most kinds of monkeys the various tufts of hair about the face and head are alike in both sexes. The males of various members of the ox family (Bovidse), and of certain antelopes, are furnished with a dewlap,
Archive image from page 540 of The descent of man . The descent of man : and selection in relation to sex descentofmanseledarw Year: 1874 MAMMALS—DEVELOPMENT OF HAIR. 527 in the male than in the female, as in the Mycetes caraya and Pithecia satanas (fig. 68). So it is with the whiskers of some species of Macacus,' and, as we have seen, with the manes of some species of baboons. But with most kinds of monkeys the various tufts of hair about the face and head are alike in both sexes. The males of various members of the ox family (Bovidse), and of certain antelopes, are furnished with a dewlap, or great fold of skin on the neck, which is much less developed in the female. Fig-. 68. Pithecia satanas, male (from Brehm). Now, what must we conclude with respect to such sexual dif- ferences as these? No one will pretend that the beards of cer- tain male goats, or the dewlap of the bull, or the crests of hair along the backs of certain male antelopes, are of any use to them in their ordinary habits. It is possible that the immense beard of the male Pithecia, and the large beard of the male orang, may protect their throats when fighting; for the keepers in the Zoological Gardens inform me that many monkeys attack each ' Rengger, 'Saugethiere,' «&;c. s. 14; Desmarest, 'Mammalogie,' p. 66.
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