. The descent of man : and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. 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 o
. The descent of man : and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. 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 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. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York : Merrill and Baker
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