Guide to the Study of Insects And a Treatise On Those Injurious And Beneficial
Guide to the Study of Insects And a Treatise On Those Injurious And Beneficial
A S Alpheus Spring Packard
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FIG. 271 (1). Wing of Ortalis. , transverse shoulder- vein ; 6, auxiliary vein ; c, d> e > /> 9 and &> first > second, third, fourth, fifth and sixth longitudinal veins; i, small or middle transverse vein; k, hinder transverse vein; I, m, , o, costal vein; p, anterior basal transverse vein ; q, posterior basal transverse vein ; r, rudiment of the fourth trunk; s, axillary incision; A, S, and C, first, second and third costal cells ; D, marginal cell ; E, submarginal cell ; F, G and H, first, se...cond and third posterior cells; 7, discal cell; K, first or large basal cell; L second basal cell, or DIPTERA. 361 M. Marey has determined that a common fly when held cap- tive moves its wings 330 times a second ; a honey bee 190 times, and a cabbage butterfly (Pieris) nine times. The wings describe a figure 8 in the air. (Cosmos. ) Landois, calcu- lating the rapidity of the vibrations by the sound produced anterior of the small basal cells ; M, third basal cell, or posterior of the small basal cells; JV, anal or axillary corner of the wing; O, alar appendage, (alula).
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