. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. Chap. X Ofthopierfo 2%J and remarkable modification; in the males a small notched ridge projects obliquely from each side of the abdomen, against which the hind femora are As the male is furnished with wings (the female being wingless), it is re- markable that the thighs are not rubbed in the usual manner against the wing-covers; but this may perhaps be accounted for by the unusually small size of the hind-legs. I have not been able to examine the inner surface of the thighs,
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. Chap. X Ofthopierfo 2%J and remarkable modification; in the males a small notched ridge projects obliquely from each side of the abdomen, against which the hind femora are As the male is furnished with wings (the female being wingless), it is re- markable that the thighs are not rubbed in the usual manner against the wing-covers; but this may perhaps be accounted for by the unusually small size of the hind-legs. I have not been able to examine the inner surface of the thighs, which, judging. Fig. 15. Pneumora (from specimens in the British Museum). Upper figure, male lower figure, female. from analogy, would be finely serrated. The species of Pneumora have been more profoundly modified for the sake of stridulation than any other orthopterous insect; for in the male the whole body has been converted into a musical instrument, being 42-Westwood4' Modern Classification,' vol. i. p. 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. London, J. Murray
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecthumanbeings, bookyear
