Archive image from page 357 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele187301darw Year: 1873 844 SEXUAL SELECTION. [Part II. wins: which serves as the fiddle itself. One of the ner- vures (a) on the under surface of the former is finely ser- rated, and. is scraped across the prominent nervures on the upper surface of the opposite or right wing. In our Brit- ish Phasgonura viridisSima it appeared to me that the serrated nervure is rubbed against. the rounded hind corner of the opposite wing, the edge of which is thick- ened, colored brown,
Archive image from page 357 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele187301darw Year: 1873 844 SEXUAL SELECTION. [Part II. wins: which serves as the fiddle itself. One of the ner- vures (a) on the under surface of the former is finely ser- rated, and. is scraped across the prominent nervures on the upper surface of the opposite or right wing. In our Brit- ish Phasgonura viridisSima it appeared to me that the serrated nervure is rubbed against. the rounded hind corner of the opposite wing, the edge of which is thick- ened, colored brown, and very sharp. In the right wing, but not in the left, there is a little plate, as transparent as talc, surrounded by nervures, and called the speculum, In Ephippiger vitium, a member of this same family, we have a curious subordinate modification; for the wing- covers are greatly reduced in size, but ' the posterior part of the pro-thorax is elevated into a kind of dome over the Fig. 12.—Chlorocoelus Tanana (from Bates), a. b. Lobes of opposite winjj-coyeis.
Size: 1614px × 1239px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1800, 1870, 1873, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, darwin_charles_1809_1882, drawing, evolution, historical, history, human_beings_origin, illustration, image, natural_selection, new_york_d_appleton_and_co_, page, picture, print, reference, sexual_dimorphism_animals_, sexual_selection_in_animals, vintage
