Dolichopodidae. 55 



Female. Epistoma broader than in the male, grey, not quite 

 reaching the lower margin of the eyes. Antennæ somewhat shorter, 

 the basal joint not with dense bristles. Wings not so broad as in 

 the male, without any black costal swelling. Hind temora generally 

 with only two preapical bristles, and front tibiæ without any apical hair. 



Length 5— 6 ram. 



H. latipennis is not rare in Denmark; Amager, Charlottenlund, 

 Skelskør and on the little island Egholm at Skelskør, Frederikssund, 

 Roskilde and Boserup; on Falster at Resle; in Jutland at Horsens, 

 and on Læsø. It is seen somewhat early in the year, my dates are 

 28/5 — ^^k. It occurs at the sea-coast and often in great number. A 

 pupa was taken on Amager, on the coast below sea-weed by J. P. 

 Kryger on 7«, and the imago came on ^^/s. 



Geographical distribution: — Northern and middle Europe, down 

 into Bohemia; towards the north to northern Scandinavia. 



2. H. diadema Hal. 



1831. Hal. Zool. Journ. V, 361,11 (DoUchopus). — 1862. Schin. F. A. 

 I, 212. — DoUchopus fratermis Stæg. 1842. Krøyer's Tidsskr. IV, 14, 2. 

 — DoUchopus Stannii Zett. 1843. Dipt. Scand. II, 560, 51 et 1859.X1II,5056,51. 



Male. Vertex and frons dark greenish. Epistoma somewhat nar- 

 row, white, reaching below the lower margin of the eyes. Palpi 

 greyish. Occiput greyish green; postocular bristles yellow. the upper 



Fig. 16. Antenna of H. diadem,a c?, from the inside. X 65. 



black. Antennæ black, not long, first joint longer than second, third 

 short, triangular; the second overlaps the third about in the middle 

 on both sides, highest on the outer side; it has a circlet of bristles at 

 the apex, longest above and below; arista longer than the antennæ. 

 Thorax metallic green, more olive on the disc, very slightly pruinose, 

 shining; there are two posthumeral, a præsutural, and three supra- 

 alar bristles. Scutellum very short-haired, with two long, black bristles, 

 and on each side a very small hair. Pleura greenish, fmely greyish 

 pruinose; the prothoracic spiracle yellow; propleura with fine, pale 



