Archive image from page 304 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele000darw Year: 1971 Chap. XVIII.] QUADRUMANA. 293 With many of the Quadrumana, we have additional evi- dence of the action of sexual selection in the greater size and strength of the males, and in the greater development of their canine teeth, in comparison with the females. Fig 71.—Head of Semnopithecus comatus. Fig. 72.— Ileau of Ccbus capuchins.

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