. Contributions to Canadian palæontology. Paleontology. Fig. 12.—Penthetria elatior, Handlirsch. In addition to the wing, there is an abdomen preserved, which is about 9°™ in length and from 4 to 5"™ in width. There are also a few fragments of legs, indicating that these organs were moderately long and relatively slender. Penthetria reducta, sp. nov. Fig. 13. Locality: Horsefly mine—(July 20, 1906. ).. Fig. 13.—Penthetria redvcta, Handlirsch. A wing 8-5™" in length, with fairly straight anterior border and arcuate posterior margin. The breadth compared to the length is as l:2-7
. Contributions to Canadian palæontology. Paleontology. Fig. 12.—Penthetria elatior, Handlirsch. In addition to the wing, there is an abdomen preserved, which is about 9°™ in length and from 4 to 5"™ in width. There are also a few fragments of legs, indicating that these organs were moderately long and relatively slender. Penthetria reducta, sp. nov. Fig. 13. Locality: Horsefly mine—(July 20, 1906. ).. Fig. 13.—Penthetria redvcta, Handlirsch. A wing 8-5™" in length, with fairly straight anterior border and arcuate posterior margin. The breadth compared to the length is as l:2-7. The radius extends seven-tenths the length of the wing; its sector originates at about the first third of the length of the wing, bifurcates at exactly half its own length, and is very markedly sig- moid in curvature. The anterior branch is long, and fuses in the margin at the first third of the distance between the radius and the posterior branch of the sector. The radiomedial cross-vein is situated about at the termination of the middle third of the distance between the origin and bifurcation of the sector, immediately below the middle of the wing. The media dichotomizes quite a distance posterior to the centre of the wing, its branches being distinctly divergent. The cubitus bifurcates at one-third the length of the wing, and its posterior member proceeds- in a strong curve to the lower margin, which it meets at half the length of the wing. The. 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
