Archive image from page 351 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele1874darw Year: 1874 338 THE DESCENT OF MAN. comes next to Onitis) has a similar slight crest on the thorax, and the male bears a great projection in the same situation. So again, there can hardly be a doubt that the little point (a) on the head of the female Onitis furcifer as well as on the head of the females of two or three allied species, is a rudimentary representative of the cephalic horn, which is common to the males of so many Lamelli- corn beetles, as in Phanae
Archive image from page 351 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele1874darw Year: 1874 338 THE DESCENT OF MAN. comes next to Onitis) has a similar slight crest on the thorax, and the male bears a great projection in the same situation. So again, there can hardly be a doubt that the little point (a) on the head of the female Onitis furcifer as well as on the head of the females of two or three allied species, is a rudimentary representative of the cephalic horn, which is common to the males of so many Lamelli- corn beetles, as in Phanaeus (fig. 18). The odd belief that rudiments have been created to com- plete the scheme of nature is here so far from holding good, that we have a complete inversion of the ordinary state of things in the family. We may reasonably suspect that the males orignreally bore horns and transferred them to the females in a rudimentary condition, as in so many other Lamellicorns. Why the males subsequently lost their horns, we know not; but this may have been caused through
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Keywords: 1800, 1870, 1874, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, darwin_charles_1809_1882, drawing, evolution, heredity, historical, history, human_beings, illustration, image, natural_selection, new_york_a_l_burt, page, picture, print, reference, sex_differences, sexual_dimorphism_animals_, sexual_selection_in_animals, vintage
