Dolichopodidae. 177 



with a white ring in the middle, the last three joints black, thus the 

 whole tarsus is black with two white rings; posterior tarsi black, 

 hind metatarsus a little shorter than the second joint. The legs have 

 short, black hairs, posterior femora with some longish, pale hairs 

 below at the base, and they have one preapical bristle; front tibiæ 

 with a few bristles above, and one or two postero-ventral ; middle 

 tibiæ with two dorsal rows of bristles, two anterior bristles and one 

 ventral; hind tibiæ with two dorsal rows and some ventral bristles, 

 and besides with dense, short hairs on the ventral and posterior side. 

 Wings a little brownish tinged, most towards the anterior margin; 

 veins black; discai vein with a small, obtuse curve, and only slightly 

 converging towards the cubital vein; the posterior cross-vein situated 

 in the middle of the wing; axillary lobe somewhat small. Squamulæ 

 pale yellow, with a black fringe. Balteres yellow. 



Female. Epistoma considerably broader than in the male, grey. 

 Antennæ a little shorter, third joint not longer than broad. Front 

 tarsi black, brownish towards the base, metatarsus with a very faint, 

 paler ring. 



Length 4 — 5,3 mm. 



H. chrysozygos is not rare in Denmark ; Hellerup, Tisvilde, Bose- 

 rup near Roskilde, Skelskør, Faxe Ladeplads; on Langeland at Lohals; 

 on Funen at Odense, and on Fænø. My dates are ^^k—^^li. It occurs 

 on bushes and in grass and low herbage, often near water; I have 

 sometimes found it at ditches with putrid water. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to southern Sweden. 



4. H. Sahlbergi Zett. 



1838. Zett. Ins. Lapp. 711,14 {DoUchopus). — 1843. Zett. Dipt. Scand. 

 II, 566, 56, et 1849. VIII, 3085, 56, et 1859. XIII, 5056,56 (DoUchopus). 

 — 1862. Schin. F. A. I, 208 {Gymnopternus). — 1903. Kat. palåarkt. Dipt. 

 II, 313. 



Male. Vertex and frons green, somewhat pruinose. Epistoma 

 somewhat broad, silver-white. Palpi black. Occiput æneous green, 

 somewhat pruinose; postocular bristles whitish below, black above. 

 Antennæ black, shorter than the head, third joint about as long as 

 broad, short triangularly pointed. Thorax dark æneous green, some- 

 what greyish pruinose, especially in front, and slightly shining; scu- 

 tellum almost bare, only with some few, black hairs at the margin 

 and above. Pleura dark greenish, greyish pruinose; propleura with 

 long, yellowish hairs and a black prothoracic bristle. Abdomen green 

 or æneous green, greyish white pruinose, especially downwards; it is 



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