. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. *a><^.. Fig. 29. Callionymus lyra. Upper figure, male; lower figure, female. The lower figure is more reduced than the upper. fins white. The sexes differ also in the proportional size of the head and mouth, and in the position of the eyes ;12 but the most striking difference is the extraordinary elongation in the male (fig. '29) of the dorsal fin. Mr. W. Saville Kent remarks that this " singular appendage appears from my observations " of the species in
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. *a><^.. Fig. 29. Callionymus lyra. Upper figure, male; lower figure, female. The lower figure is more reduced than the upper. fins white. The sexes differ also in the proportional size of the head and mouth, and in the position of the eyes ;12 but the most striking difference is the extraordinary elongation in the male (fig. '29) of the dorsal fin. Mr. W. Saville Kent remarks that this " singular appendage appears from my observations " of the species in confinement, to be subservient to the same end as the wattles, crests, and other abnormal adjuncts of the male in gallinaceous birds, for the purpose of fascinating tt i< M I have drawn up this description from Yarrell's ' British Fishes,'voI. \, 183S, pp. 2G1 and 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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Keywords: ., boo, bookcentury1800, bookdecade1880, booksubjectnaturalselection
