. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. Chap. XVIII.] ORNAMENTAL COLORS. 279 black, tinged with blue. In the adult female, however, the nose at certain regular intervals of time becomes tinted with red. In all the cases hitherto given the male is more strong- ly or brightly colored than the female, and differs in a. Fig. 67.—Head of male Mandrill (from Gervais ' Hist. Nat des Mammiferes'). greater degree from the young of both sexes. But as a reversed style of coloring
. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. Chap. XVIII.] ORNAMENTAL COLORS. 279 black, tinged with blue. In the adult female, however, the nose at certain regular intervals of time becomes tinted with red. In all the cases hitherto given the male is more strong- ly or brightly colored than the female, and differs in a. Fig. 67.—Head of male Mandrill (from Gervais ' Hist. Nat des Mammiferes'). greater degree from the young of both sexes. But as a reversed style of coloring is characteristic of the two sexes with some few birds, so with the Rhesus monkey {Macaeus rhesus) the female has a large surface of naked. 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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