. Contributions to Canadian palæontology. Paleontology. Handlirsch] CANADIAN I'OSSIL INSECTS 107 A beautifully preserved wing, 12"°' in length, three times as long as broad, with opaque borders along the veins. The apex of the wing is sub-acute, the anterior and posterior margins being about equally curved. At about seven-tenths the length of the wing, the radius fuses in the margin in a rather strong curve. The sector originates at about one-fourth the length of the wing and bifurcates at about half its own length, and directly above the termination of the radius. The superior branch pre
. Contributions to Canadian palæontology. Paleontology. Handlirsch] CANADIAN I'OSSIL INSECTS 107 A beautifully preserved wing, 12"°' in length, three times as long as broad, with opaque borders along the veins. The apex of the wing is sub-acute, the anterior and posterior margins being about equally curved. At about seven-tenths the length of the wing, the radius fuses in the margin in a rather strong curve. The sector originates at about one-fourth the length of the wing and bifurcates at about half its own length, and directly above the termination of the radius. The superior branch presents a nearly sigmoid curve, fusing in the margin midway between the posterior branch and the radius. The radiomedial cross-vein is situated distinctly nearer to the bifurcation than to the origin of the sector. The^ media divides in the apical half of the wing, its branches being strongly arcuate but not widely divergent. The cubitus draws toward the posterior margin in a relatively steep but gentle curve, its anterior branch fusing some- what distally from the middle of the wing, while its posterior branch meets the margin at just two-fifths the length of the wing. Close behind the cubitus, and nearly parallel with it, runs a distinct fold, and farther on is a simple anal vein. The medioeubital vein lies more than twice as far above the radiomedial vein as the latter is anterior to the bifurcation of the Fig. 10.—Penthetria 1 pictipennis, Handlirsch. To this species probably belongs a second specimen from the right branch of the Tulameen river, IJ miles above Princeton (August Y,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geological Survey of Canada. Ottawa, Printed by S. E. Dawson
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
