PROCEEDINGS WASHINGTON ACADEMY OF SCIENCES. Vol. II, pp. 389-464. December 7, 1900. PAPERS FROM THE HARRIMAN ALASKA EXPEDITION. IX. ENTOMOLOGICAL RESULTS (3): DIPTERA. By D. W. Coquillett. ' The series of Dipterous insects collected by Professor Trevor Kincaid while a member of the Harriman Expedition to Alaska during the summer of 1899 ^^ °^^ ^^ ^^^ most interesting and valuable collections of insects of that order that the U. S. Na-tional Museum has acquired for many years. The specimens themselves, almost without exception, are in first-class condi-tion, and each is accompanied by a label giving the exact lo-cality and date of capture. The collection contains 2,423 specimens, representing 276 species, distributed in 138 genera and 36 families. One genus and 63 of the species are believed to be new to science, and are described in this paper. In addition to the specimens referred to above, there are a number of others which it is quite impos-sible to correctly classify in the present condition of the science ; these are chiefly female specimens belonging to groups in which the sexes are very dissimilar in appearance, and the principal classificatory characters are present in the male sex alone, ob-scure groups which have not as yet been thoroughly studied in this country, and for the proper elucidation of which several years of careful study will be required. Proc. Wash. Acad. Sci., December, 1900. (389)
BioStor
