Dolichopodidae. 



121 



dorsal, two postero-dorsal bristles, and one ventral below the middle; 

 hind tibiæ with two dorsal rows of bristles, one vential bristle to- 

 wards the apex, and a row of small ventral bristles; hind metatarsi 

 with only one dorsal bristle, further one anterior and small ventral 

 bristles. Wings somewhat brownish or greyish tinged; veins blackish, 

 costa with a somewhat small swelling; discai vein with a large, rect- 

 angular bend, and with a small veinlet at the lower angle; posterior 

 cross-vein lying a little before the middle of the wing; axillary lobe 

 not large, anal vein going forwards. Squamulæ yellow, with a black 

 fringe. Halteres yellow. 



Female. Epistoma broad, grey or whitish grey. Antennæ con- 

 siderably shorter than in the male, third joint short, not or slightly 

 longer than broad. Front tibiæ without a long hair at the tip, and 

 hind femora not fringed; hind tibiæ not or very slightly darkened at 

 the tip. 



Length 4,7 — 5,4 mm. 



D.griseipennis is common in Denmark; Copenhagen in agarden, 

 Amager, Hellerup, Tisvilde; on Fimen at Hoffmansgave and Ørbæk- 

 lunde, and in Jutland at Thisted. My dates are ^'^ — ^^^'k. It occurs 

 often near the shore, and sometimes in great number, but also more 

 inland; Stæger took it on Amager at the shore, on Garduus. 



Geographical distribution : • — The species is one of the most 

 widely distributed; it occurs in Europe down into Spain, southern 

 Italy and Greece, further in Asia Minor and in North Africa; towards 

 the north to middle Sweden. 



31, D. acuticornis Wied. 



1817.Wied.Zool. Mag. I, 74,23. — 1823. Fall. Dipt. Suec. Dol. 12, 10. 



— 1831. Stann. Isis 1831, 55, 8. — 1843. Zett. Dipt. Scand. II, 531,26. 



— 1862. Schin. F. A. I, 218. - 1903. Kat. palåarkt. Dipt. II, 294. — 

 Dolichopus ruralis Meig. 1824. Syst. Beschr. IV, 94, 35. — 1842. Stæg. 

 Krøyer's Tidsskr. IV, 18, 8. 



Fig. 35. Antenna of D. acuticornis c?, from the inside. X 65, 



Male. Body somewhat slender. Vertex and frons green. Epistoma 

 somewhat narrow, white. Palpi whitish pruinose, Occiput green or 

 æneous, grey pruinose; postocular bristles whitish below, black above. 



