. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings; Sexual selection in animals; Sexual dimorphism (Animals); Sex differences. 304 TBE DESCENT OF MAN. haying fought with other males during many generations. In most of the orders^ especially in the highest or the Brachyura, the male is larger than the female ; the para- sitic genera, however, in which the sexes follow different. Fig. 8. Orchestia Darwinii (from Fritz MuUer), showing the differently constructed chelae of the two male forms. habits of life, and most of the Entomostraca mus
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings; Sexual selection in animals; Sexual dimorphism (Animals); Sex differences. 304 TBE DESCENT OF MAN. haying fought with other males during many generations. In most of the orders^ especially in the highest or the Brachyura, the male is larger than the female ; the para- sitic genera, however, in which the sexes follow different. Fig. 8. Orchestia Darwinii (from Fritz MuUer), showing the differently constructed chelae of the two male forms. habits of life, and most of the Entomostraca must be excepted. The chelae of many crustaceans are weapons well adapted for fighting. Thus when a devil-crab {Por^ tunus puler) was seen by a son of Mr. Bate fighting with a Carcinus mce7ias, the latter was soon thrown on its back, and had every limb torn from its body. When several. 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 : A. L. Burt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjecthumanbeings, bookyear
