. Bulletin. Natural history; Natural history. $SUBCENITAL PLATE female of .â/rt(' ( No. 11,308). Certainly both of these are identical as to species. Fig. 55 is an illustration of the subgenital plate of the holotypic female described by Smith (1917) as lineata. Male and female specimens of minor determined by Klapalek are in the collec- tion of the Museum of Comparative Zo- oIojr\. Wlien these were compared with specimens of Perlodes from Mount Wash- injiton, N. H., previously determined as lineata. and with the type of slossoiiae, no tangible differences could be found. Spe- c
. Bulletin. Natural history; Natural history. $SUBCENITAL PLATE female of .â/rt(' ( No. 11,308). Certainly both of these are identical as to species. Fig. 55 is an illustration of the subgenital plate of the holotypic female described by Smith (1917) as lineata. Male and female specimens of minor determined by Klapalek are in the collec- tion of the Museum of Comparative Zo- oIojr\. Wlien these were compared with specimens of Perlodes from Mount Wash- injiton, N. H., previously determined as lineata. and with the type of slossoiiae, no tangible differences could be found. Spe- cies of stoneflies have a much more general distribution within certain limits than lit- erature records indicate. Although I have not examined the t\ pe of maryarita 1 feel quite certain that it is the male of the spe- cies Banks described as slossonaeâthey even came from the same mountainâ which in turn is the same species as lineata from nearby New York. On the highest mountains in the East are a few species of stoneflies found at lower levels farther north. Klapalek's minor is a species of Perlodes having a pair of gill remnants in the adult only on the submentum. In western North America there is another species of Per- lodes named amerieana (Klapalek) cIoscIn related on the basis of gills to /ninor but with a distinctive subgenital plate in the female and with different genitalia in the male. P. ignota (Smith), described (1917) without locality data, is evidently another synonym of minor, but the type could not be found when my studies of the Perlodes tjpes were made. Perlodes aurea (Smith) .â Ircynopteryx aiirra Smith (1917, p. 477). Original description, 9- Ariynopteryx vayans Smith (1917, p. 478). Original description, i . New synonymy. Arcynopteryx aurea was described from a single female ( No. 1,141) from "San Diego, Calif., April 23, ; and vagans from a single male ( No. ) from "; I have studied the types of both a
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
