. British insects : a familiar description of the form, structure, habits, and transformations of insects. Wing of Grasshopper {A cridaviridissima). 44 INSECTS. mitive violin—with bow, string, and sounding-board,—is to be found in the fore wings. This instrument is most conspicuous in the consists of a clear space in the wing-cases, or fore-wing, consisting of a tense membrane enclosed by strongand prominent nervures ; near this lies a strong nerve orridge, with a toothed, file-like surface. This file (theboiv), most prominent on the upper surface of the wingwhich underlies, and on
. British insects : a familiar description of the form, structure, habits, and transformations of insects. Wing of Grasshopper {A cridaviridissima). 44 INSECTS. mitive violin—with bow, string, and sounding-board,—is to be found in the fore wings. This instrument is most conspicuous in the consists of a clear space in the wing-cases, or fore-wing, consisting of a tense membrane enclosed by strongand prominent nervures ; near this lies a strong nerve orridge, with a toothed, file-like surface. This file (theboiv), most prominent on the upper surface of the wingwhich underlies, and on the under surface of that whichoverlaps, plays, when the wings are rubbed together,upon the raised ribs, causing a strong vibration in thedrum-like membrane, or sounding-board, beside them,and thus producing the sound. Figure 1 9 shows the drum and file (or sounding-board Fig.
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Keywords: ., bookauthorme, bookcentury1800, bookdecade1870, booksubjectinsects
