. The fossil insects of North America, with notes on some European species [microform]. Insects, Fossil; Insects; Insectes fossiles; Insectes. I ^1. 6r> the tip of the wing but below the middle line of the same; it emit« five equidistant nlmost equal longitudinal branches, each of wiiich forks at or sonu'what beyond its middle and iit similar distances from the costal margin ; the mediastinal and scapular branches accordinf,dy change their direction in the most gradual way from nearly transverse to longitudinal, and the mediastinal and scapular areas together occupy nearly one-half the widt
. The fossil insects of North America, with notes on some European species [microform]. Insects, Fossil; Insects; Insectes fossiles; Insectes. I ^1. 6r> the tip of the wing but below the middle line of the same; it emit« five equidistant nlmost equal longitudinal branches, each of wiiich forks at or sonu'what beyond its middle and iit similar distances from the costal margin ; the mediastinal and scapular branches accordinf,dy change their direction in the most gradual way from nearly transverse to longitudinal, and the mediastinal and scapular areas together occupy nearly one-half the width of the Avin;'. The externomedian vein, strongly arcuate, like the preceding, at the base, begins to divide ns soon as that, and beyond this is straight, terminating at a short distance before the tip of the wing; its first branch passes down the middle of the wing and dies out a little beyond the middle; its three other branches, which like the first are superior, are emitted furtlior out in the apical half of the wing ond are each simply forked before their middle; tlio upper fork of the first of these approximates very closely to the scapular vein, leaving no passage for the basal branch. Beyond the base the internomedian vein is also straight and emits four equidistant branches, .the first (at near the origin of the basal branches of tlio preceding veins) being doubly, the others, excepting the apical, simply forked. The auid furrow is deeply impressed, very regularly and rather gently arcuate, terminating a little before the middle of the Aving; the anal veins are numerous, gently sinuous and mostly simple, the upper ones deeply forked and more distant. The species is u bttle above the medium size, the length of the fragment preserved mm., being scarcely siicrter than the real length of the wing; its greatest breadth, at the end of the basal fifth, mm, oi the breadth to the length as 1 : The specimen is very nearly perfect, and represents the upper surface
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1890
