Archive image from page 357 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele187201darw Year: 1872 344 SEXUAL SELECTION. [Part II. wing 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, an
Archive image from page 357 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele187201darw Year: 1872 344 SEXUAL SELECTION. [Part II. wing 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 win-coveis.
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Keywords: 1800, 1870, 1872, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, darwin_charles_1809_1882, drawing, evolution_biology_, historical, history, human_beings_origin, illustration, image, new_york_d_appleton_and_company, page, picture, print, reference, sex_differences, sexual_dimorphism_animals_, sexual_selection_in_animals, vintage
