Title: Annual report
Identifier: annualreport6121907newy (find matches)
Year: 1902 (1900s)
Authors: New York State Museum
Subjects: New York State Museum; Science; Science
Publisher: Albany : University of the State of New York
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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2l8 NEW YORK STATE MUSEUM course and .are generally clearly recognizable. They will be desig- nated in this paper by the following names and abbreviations for them: Costa (C) Subcosta (Sc) Radius (R) ^ Media (M) Cubitus (Cw) Anal veins (ist A, 2d A, 3d A) On the accompanying diagram [fig. 11] of a crane fly wing these principal veins are designated at the base by the abbreviations given above. It will be observed that the radius is distinguished by the possession of a very large and conspicuous posterior branch. This branch is called the radial sector {Rs). All other branches are
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Fig. II designated by number, the numbers beginning at the front and con- tinuing posteriorly, the number being added to the symbol for the vein, for any branch to which it belongs. For example the branches of the radial vein are labeled R^, R^, R^, R"^, and R^. The costa is simple and lies on the foreborder of the wing. The subcosta is two branched and bears a short apical fork, but the divisions of this fork, running as they do into costa and radius respectively, have usually the appearance of cross veins. The radius gives off its sector as already noted, and this in turn is dichotomously twice forked. Media likewise has a manner of forking essentially like that of the radial sector, and cubitus is once forked. Al- though the anal veins are usually simple, the second of them is occasionally forked at the tip.

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