The descent of man, and selection in relation to sex . the female. Male quadrupeds of many kinds differ from thefemales in having more hair, or hair of a differentcharacter, on certain parts of their faces. The bullalone has curled hair on the ^^ In threeCxosely-allied sub-genera of the goat family, the malesalone possess beards, sometimes of large size; in twoother sub-genera both sexes have a beard, but this ^ Dr. Gray, Gleanings from the Menagerie at Knowsley, pi. 28. ^?* Judge Caton on the wapiti, Tiansact. Otiawa Acad. , 18G8, p. 36, 40; Blyth, Land aud Water, on Caj
The descent of man, and selection in relation to sex . the female. Male quadrupeds of many kinds differ from thefemales in having more hair, or hair of a differentcharacter, on certain parts of their faces. The bullalone has curled hair on the ^^ In threeCxosely-allied sub-genera of the goat family, the malesalone possess beards, sometimes of large size; in twoother sub-genera both sexes have a beard, but this ^ Dr. Gray, Gleanings from the Menagerie at Knowsley, pi. 28. ^?* Judge Caton on the wapiti, Tiansact. Otiawa Acad. , 18G8, p. 36, 40; Blyth, Land aud Water, on Cajra aga-grus, 1867, p. 37. ^ Hunters Essays and Observations, edited by Owen, 1861, vol. 236. Cjiap. XVIII. DEVELOPMENT OF HAIR. 283 disappears in some of tlie domestic breeds of the com-mon goat; and neither sex of tlie Hemitragus has abeard. In the ibex the beard is not developed duringthe summer, and is so small at other seasons that itmav be called riidiinentarv.^^ AAith some monkeys thebeard is confined to the male, as in the Orang, or is. Fi-. 66 Pithecia Satanas, male (fruin Brehm). much larger in the male than in the female, as in theMycetes caraija and Pithecia satanus (fig. QQ), So it is\vith the whiskers of some species of Macacus/^ and, aswe have seen, with the manes of some species of baboons. ^^ See Dr. Grays Cat. of Mammalia in British Museum, part , p. 144. Rengger, Stiugetliiere, &c., s. 14; Desmarest, * Mammalogie,p. 60. 284 SEXUAL selection: mammals. PartIL But with most kinds of monkeys the various tufts ofhair about the face and head are alike in both sexes. The males of various members of tlie Ox family(Bovidse), and of certain antelopes, are furnished witha dewlap, or great fold of skin on the neck, which ismuch less developed in the female. Now, wdiat must we conclude with respect to suchsexual differences as these ? No one will pretend thatthe beards of certain male-goats, or the dewlap of thebull, or the crests of hair along the backs of ce
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