. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. Chap. XII. Fishes. 337 " their ;13 The young males resemble the adult females in structure and colour. Throughout the genus Callionymus,14 the male is generally much more brightly spotted than the female, and in several species, not only the dorsal, but the anal fin is much elongated in the males. The male of the Coitus scorpius, or sea-scorpion, is slenderer and smaller than the female. There is also a great difference in colour between them. It is difficult,
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. Chap. XII. Fishes. 337 " their ;13 The young males resemble the adult females in structure and colour. Throughout the genus Callionymus,14 the male is generally much more brightly spotted than the female, and in several species, not only the dorsal, but the anal fin is much elongated in the males. The male of the Coitus scorpius, or sea-scorpion, is slenderer and smaller than the female. There is also a great difference in colour between them. It is difficult, as Mr. Lloyd10 remarks, " for any one, who has not seen this fish during the spawning- " season, when its hues are brightest, to conceive the admixture " of brilliant colours with which it, in other respects so ill— " favoured, is at that time ; Both sexes of the Labrus mixtus, although very different in colour, are beautiful; the male being orange with bright blue stripes, and the female bright red with some black spots on the back. ;. -. ^<&f^?v. 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, Appleton
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