. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings -- Origin. Chap. IX.] CRUSTACEANS. 321 on the opposito sides of the body, and by the inequality be- ing much greater in the male than in the female; and why,. Fig. 4.—Anterior part of body of Callianassa (from Milne-Edwards), showing the unequal and differently-constructed right and left-liand chelae of the male. N. B.—The artist by mistake has reversed the drawing, and made the left- hand chela the Please note that these


. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings -- Origin. Chap. IX.] CRUSTACEANS. 321 on the opposito sides of the body, and by the inequality be- ing much greater in the male than in the female; and why,. Fig. 4.—Anterior part of body of Callianassa (from Milne-Edwards), showing the unequal and differently-constructed right and left-liand chelae of the male. N. B.—The artist by mistake has reversed the drawing, and made the left- hand chela the 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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Keywords: ., bookcentury1800, bookdecade1870, booksubjectevoluti, bookyear1872