. Bulletin. Natural history; Natural history. September, 1942 Frison : North American 289 quoting Smith's original description of vagal!s, reference to this feature was omit- ted when they quoted the original descrip- tion of Smith for aurea, although the lat- ter description contains such a statement. In the Illinois Natural History Survey collection are two nymphs from Rogue River, Ore., Sept. 29, 1932, collector, R. E. Dimick, which have five pairs of gills located as in the adult of aurea, and hence I consider them to be of this species. Records for the distribution of this spe
. Bulletin. Natural history; Natural history. September, 1942 Frison : North American 289 quoting Smith's original description of vagal!s, reference to this feature was omit- ted when they quoted the original descrip- tion of Smith for aurea, although the lat- ter description contains such a statement. In the Illinois Natural History Survey collection are two nymphs from Rogue River, Ore., Sept. 29, 1932, collector, R. E. Dimick, which have five pairs of gills located as in the adult of aurea, and hence I consider them to be of this species. Records for the distribution of this species based upon Illinois Natural History Survey material, or the identification of specimens for others, are as follows. Oregon.âCorvallis, Alsea River: April 2, 1939, Davidson, 1$. Near Lacomb, Roaring River: March 20, 1934, R. Dimick, 1 c5 . Park- dale, east fork of Mount Hood River: May 2, 1934, R. Dimick, 16. Rogue River, 1,780 feet elevation: Sept. 29, 1932, R. Dimick, 2 nymphs. Tillamook: March 20, 1934, Joe Schuh, 1$. Washington.âEaston: April 17, 1934, G. Hoppe, 86, 2$ ; April 25, 1934, G. Hoppe, 76. Perlodes dolobrata (Smith) Protarcys dolobrata Smith (1917, p. 469). Original description, $. Perlodes dolobrata Needham & Claassen (1925, p. 52). Description, $ . I have not studied the typic female, in the Academy of Natural Sciences of Phila- delphia, and described without locality data, and full information regarding actu- al number of pairs of gills is not given in the original description. The descrip- tion does indicate, however, that thoracic gills are present, and it is a safe assump- tion that submental gills are present, there- by making Smith's key to Protarcys in- decisive. Needham & Claassen (1925), apparent- ly on the basis of wing venation, described a male from "Glacier Peak and Lake Chelan ; as the "; This. specimen, in the Cornell University col- lection, has a pair of submental gills and at least one thoracic
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