Archive image from page 361 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansel01darw Year: 1871 344 SEXUAL SELECTIOX. [I'aut II. wing which serves as the liddle itself. One of the ner- vures (a) ou the under surface of the former is finely ser- rated, aud is scraped across the prominent nervures on the upper surface of the opposite or right wing. In our Brit- isii FJcasfjonura viridisshna 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
Archive image from page 361 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansel01darw Year: 1871 344 SEXUAL SELECTIOX. [I'aut II. wing which serves as the liddle itself. One of the ner- vures (a) ou the under surface of the former is finely ser- rated, aud is scraped across the prominent nervures on the upper surface of the opposite or right wing. In our Brit- isii FJcasfjonura viridisshna 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 yharp. 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 curioiis 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.—Chlorocaslus Tanana (from BatesV a. b. Lobes of opposite winjj-coveis.
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Keywords: 1800, 1870, 1871, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, darwin_charles_1809_1882, drawing, evolution_biology_, historical, history, human_beings, illustration, image, new_york_d_appleton_and_company, page, picture, print, reference, sex_differences, sexual_dimorphism_animals_, sexual_selection_in_animals, vintage
