. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings -- Origin. Fie:. 5. Fig. 6. pI6. 5.—Second lesj of male Orchestia Tucuratinga (from Fritz Miiller). Fig. 6.—Ditto of female. when they are of equal size, both are often much larger in the male than in the female, is not known. The chelae are sometimes of such length and size that they cannot possibly be used, as I hear from Mr. Spence Bate, for car- rying food to the mouth. In the males of certain fresh- water prawns (Pala3mon) the

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. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings -- Origin. Fie:. 5. Fig. 6. pI6. 5.—Second lesj of male Orchestia Tucuratinga (from Fritz Miiller). Fig. 6.—Ditto of female. when they are of equal size, both are often much larger in the male than in the female, is not known. The chelae are sometimes of such length and size that they cannot possibly be used, as I hear from Mr. Spence Bate, for car- rying food to the mouth. In the males of certain fresh- water prawns (Pala3mon) the right leg is actually longer. 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