Dolichopodidae. 149 



one 011 the postero-ventral side; middle tibiæ with about four antero- 

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

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

 wards the apex, and besides very small ventral bristles or hairs; hind 

 metatarsi with about three dorsal and two anterior bristles, and with 

 small bristles below. Wings narrowed towards the base, with the 

 axillary lobe very small; they are a little brownish tinged, especially 

 towards the anterior margin; veins black or blackish, costa with a 

 small swelling; discai vein with an obtuse bend; anal vein going 

 much forwards. Halteres yellow, with a black fringe. Squamulæ yel- 

 low or pale yellow. 



Female. Epistoma broad, greyish white, pubescent as in the 

 male. Antennæ shorter than in the male, third joint shorter than 

 broad. Front tarsi quite simple, hind tibiæ not thickened, and hind 

 femora without fringe. Wings almost not narrowed towards the base, 

 a little more tinged than in the male, without costal swelling. 



Length 4—4,2 mm. 



D. longitarsis is somewhat common in Denmark ; Lersøen, Ordrup 

 Mose, Lyngby Mose, Fure Sø, Boserup at Roskilde, Faxe Ladeplads; 

 on Lolland at Maribo; on Funen at Odense; in Jutland at Horsens, 

 Frijsenborg, Holstebro, Gjerlev near Randers Fjord, Hald near Viborg 

 and Ravnkilde and Tinbæk Mølle at Lindenborg Aa; and fmally on 

 Bornholm at Allinge. My dates are ^^/6— ^/<>. It occurs in low herbage 

 and on bushes on hurnid piaces and at the border of water. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to middle Sweden, and in Finland. 



45. D. rupestris Hal. 



1833. Hal. Entom. Mag. I, 164. — 1862. Schin. F. A. 1, 222. — 

 1903. Kat. palåarkt. Dipt. II, 303. — Dolicliopus festinans Zett. 1838. Ins. 

 Lap. 708, 5, et 1843. Dipt. Scand. II, 507, 6, et 1852. XI, 4276, 6. — 

 Dolichopus fuscimanus Zett. 1843. Dipt. Scand. II, 510, 8, et 1849. VIII^ 

 3076, 8. 



Male. Vertex and frons of greenish ground colour, but strongly 

 brownish dusted, so that the green colour is almost or quite hidden. 

 Epistoma somewhat broad, brown. Palpi blackish or brown. Occiput 

 æneous, grey pruinose; postocular bristles black. Antennæ black, a 

 little elongated, about of the length of the head, third joint longer 

 than broad with the lower margin convex, the upper straight, and 

 thus the point dorsal, but much truncated. Thorax æneous, some- 

 times greenish æneous, brownish pruinose, slightly shining; scutellum 

 finely yellow pubescent; postscutellum æneous, grey pruinose. Pleura 



