. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. Chap. XVIIL] 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 develoj^ment of their canine teeth, in comparison with the Fig 71.—Head of Semnopithecu6 comatus. Fig. 72.—Head of Cebus Please note that these images are extracted from scanned page images that may have been digitally enhan
. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. Chap. XVIIL] 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 develoj^ment of their canine teeth, in comparison with the Fig 71.—Head of Semnopithecu6 comatus. Fig. 72.—Head of Cebus 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, D. Appleton and company
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