. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 136 ME LANDER AND BRUES. [VOL. I. latter spot reaches only to the second longitudinal in one specimen. Veins black ; costa with an elongate swelling at the junction of the humeral vein ; notch at tip of fifth vein distinct. Tegulae and halteres light yellow, the former with long black cilia. Described from two male specimens collected in North Park, Colorado. This species is related to Johnsoni Aldrich, but may be dis- tinguished by its wide face, totally black coxae, spotted wings, and violaceous front. Dolichopits paiuster
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 136 ME LANDER AND BRUES. [VOL. I. latter spot reaches only to the second longitudinal in one specimen. Veins black ; costa with an elongate swelling at the junction of the humeral vein ; notch at tip of fifth vein distinct. Tegulae and halteres light yellow, the former with long black cilia. Described from two male specimens collected in North Park, Colorado. This species is related to Johnsoni Aldrich, but may be dis- tinguished by its wide face, totally black coxae, spotted wings, and violaceous front. Dolichopits paiuster, sp. nov. Bluish-green ; antennae totally black ; infraocular cilia black ; tegular cilia black ; legs including coxae black ; tarsi not ornamented ; hind femora ciliated in male. Male. Length mm. Wing mm. Shining bluish-green. Proboscis and palpi piceous. Face moderately wide, between three and four times as long as the width at the middle, covered with brownish-yellow pollen, not at all silvery. Vertex dark blue-green. Postocular cilia all black. Antennae totally black ; first joint with but few bristles above, those about the apex of the second joint very long below. Third joint oval, obtuse at apex. Arista black, pubescent, about twice as long as the antenna. Dorsum of thorax dark green, tinged with blue. In some specimens there is a median stripe, more blue and shining. Scutellum of the same color as thorax, fringed with short light-brown hairs. — . Abdomen green, distinctly bluish in many specimens, and very shining, sharply compressed towards apex and somewhat inflated near the base ; destitute of light dust. Hypopy- gium black, shining, slightly ochreous-dusted near the base, and bearing a bunch of black hairs basally. Lamellae oval, slightly angulated inwardly, nearly white, with a sharply defined black border, fringed with black bris- tles which are more delicate basally. Internal appendages dark ferrugi- nous. Pleurae black, white dusted, those o
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
