. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Dolichopodidae. 53 far down, is scarcely valid, several species of Dolichopus coming near in this respect. Melander and Brues (Biol. Bull. I, 1900, 123) have also treated the genus as a subgenus only, and have among several American species also referred D. plumipes to it, and Aldrich unites it in the Gatal. of North Amer. Dipt. with Dolichopus. Of the genus 4 species are known from the palæarctic region; two occur in Denmark. Table of Species. 1. Discai vein bent obtusely 1. latipennis. — Discai vein
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Dolichopodidae. 53 far down, is scarcely valid, several species of Dolichopus coming near in this respect. Melander and Brues (Biol. Bull. I, 1900, 123) have also treated the genus as a subgenus only, and have among several American species also referred D. plumipes to it, and Aldrich unites it in the Gatal. of North Amer. Dipt. with Dolichopus. Of the genus 4 species are known from the palæarctic region; two occur in Denmark. Table of Species. 1. Discai vein bent obtusely 1. latipennis. — Discai vein bent rectangularly 2. diadema. 1. H. latipennis Fall 1823. Fall. Dipt. Suec. Dol. 8, 1 (Dolichopus). — 1824. Meig. Syst. Beschr. IV, 83, 16 (Dolichopus). — 1831. Stann. Isis 1831, 45, 1 (Doli- chopus). — 1842. Stæg. Krøyer's Tidsskr. IV, 13, 1 (Dolichopus). — 1843. Zett. Dipt. Scand. II, 503,3 (Dolichopus). — 1862. Schin. F. A. I, 212. — 1903. Kat. palaarkt. Dipt. II, 294. Male. Frons and vertex bluish. Epistoma moderately broad, stretching downwards just to the lower margin of the eyes; it is light grey, brownish above. Palpi greyish yellov^. Occiput grey,. Fig. 14. Antenna of H. latipennifi c?, from the inside. X oO. slightly greenish; postocular bristles black above, yellowish below, Antennæ black, long, the two basal joints somewhat elongated, of about equal length, the third shorter, pointed oval; the basal joint with bristles above, the second with very small bristles at the apex, it overlaps the third above on the outside, below on the inside; the arisla somewhat short, distinctly hairy. Thorax bluish or greenish black, at the sides more greenish, shining, very slightly brownish pruinose, most distinctly anteriorly; sometimes it is more bronze- coloured. There are two posthumeral, a præsutural and three supraalar bristles; sometimes some of the hairs on the front part of the disc may be strong, so as to imitate bristles. Scutellum with short, pale hai
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