Dolichopodidae. 119 



and some small ventral bristles. Wings slightly tinged or almost 

 hyaline; veins black or brownish black, costa with a not large swel- 

 ling; discai vein with a large, rectangular or almost rectangular bend, 

 with a small veinlet at the lower angle, and often a similar, but still 

 smaller, at the upper angle; axillary lobe somewhat large, and the 

 anal vein going somewhat forwards. Squamiilæ yellow, with a black 

 fringe. Halteres yellow. 



Female. Epistoma broad, light grey. Antennæ shorter than in 

 the male, third joint shorter than broad. Front tibiæ with no hair at 

 tip. Wings without costal swelling. 



Length 4,4— 5,5 mm; one single male only reaches 4 mm. 



D. nitidus is not common in Denmark; Lersøen, Ordrup Mose; 

 on Funen; in Jutland at Sæby and Frederikshavn, and on Bornholm 

 at Hasle, Rø and Almindingen. My dates are in July; Stæger 1. c. 

 records it from July to October. It occurs often near water and on 

 water-plants. 



Geographical distribution: — Northern and middle Europe down 

 into France and on Corsica; towards the north to middle Sweden, 

 and in Finland. 



30. D. griseipennis Stann. 



1831. Stann. Isis 1831,49,4. — 1843. Zett. Dipt. Scand. II, 559,50. 

 — 1862. Schin. F. A. I, 218. — 1903. Kat. palåarkt. Dipt. 298. — Doli- 

 chopus nitidus 1842. Stæg. (nec Fall.) Krøyer's Tidsskr. IV, 15, 4. 



Male. Vertex and frons green or bluish. Epistoma somewhat 

 narrow, greyish white. Palpi yellow. Occiput green, greyish pruinose; 

 postocular bristles whitish below, black above. Antennæ somewhat 



Fig. 33. Antenna of D. griseipennis d, from the inside. X 65. 



elongated, a little longer than the head, third joint considerably longer 

 than broad, somewhat lancet-like; they are black, the basal joint yel- 

 low beneath. Thorax green, golden green, æneous or even coppery, 

 generally with a golden or coppery middle stripe; it is distinctly 

 pruinose, not or slightly shining; scutellum fmely, pale pubescent; 

 postscutellum grey pruinose. Pleura greenish or æneous, grey pruinose; 



