Alaska: Insects (Google eBook)

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Doubleday, Page, 1910 - Alaska
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Page ii - ... descriptive of my researches in Cambrian Geology and Paleontology. Harriman Alaska Expedition. — Arrangements are being made by which the publication of the series of volumes on the results of the Harriman scientific expedition to Alaska in 1899 will be transferred to the Smithsonian Institution and the work will hereafter be known as the Harriman Alaska series of the Smithsonian Institution. The remainder of the edition of the 11 volumes privately printed, as well as volumes in preparation,...
Page 169 - Alaska eleven species (sens, lat.) which may be recognized by the use of the following table. TABLE OF SPECIES.
Page 9 - ... remainder of legs blackish brown, front femora each bearing a transverse, contiguous pair of blunt tubercles near the tip of the under side, and just beyond them a pair of rather widely separated cavities ; front tibiae each bearing a blunt tubercle on the under side near the base, the inner side...
Page 184 - ... first joint of the flagellum a little longer than the second, the second and succeeding joints subequal; antennae twenty- six or twenty seven jointed.
Page 66 - ... nearly as long as the face, the third joint one and one-half times as long as the second, arista thickened on the basal two-fifths, the penultimate joint broader than long; thorax gray pollinose, marked with three black...
Page 9 - ... second; each of the last three joints slightly over one half as long as the second joint, claws cleft almost to the middle; halteres whitish; wings brownish gray, veins brown, first section of the media yellow, bases of the branches of the radius nearly coalescent; length 4.5 mm. Yakutat, Alaska. This species agrees very well with Dr Schiner's description and figures except in the structure of the legs, but these are not sufficiently different to warrant the establishing a separate genus for...
Page 259 - ... ferruginous ; palpi yellowish. The antennae are longer than the body ; the first joint of the flagellum is the longest, the following joints subequal, all being longer than thick. The head and thorax are finely coriaceous and also punctate, the transverse depression on the pronotum with short elevated lineations, the parapsidal furrows distinct, the mesopleura with a large shining spot at the middle and posteriorly, the metathorax rugulose with distinct pleural and median carinse, while the metapleura,...
Page 77 - ... separating Drosophila from Scaptomyza have been rather vague and obscure, and in consequence the last-named genus has not been generally adopted. A recent study of this group has disclosed a well-marked difference in the disposition of the short, bristly hairs of the mesonotum ; in Scaptomyza these hairs are sparse and are arranged in two or four nearly regular rows, while in Drosophila as restricted they are numerous and not arranged in two or four rows.
Page 64 - Black, the halteres yellow, lower part of front yellowish brown ; frontal orbits contiguous for a short distance, antenna nearly as long as the face, the third joint only slightly longer than the second...
Page 57 - ... threefourths as long as the face, the third joint one and one-half times as long as the second, arista...

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