Dolichopodidae. 181 



apex; at the end there are, besides the dorsal median appendage, two 

 pairs of inner laniellæ, both hook-shaped, the lateral bent angularly 

 down in the middle, and the apex again bent backwards, so that 

 they are doubly curved; the median inner lamellæ with the point 

 curved downwards, and with a long tooth at the base on the dorsal 

 side, which is directed upwards; the outer lamellæ are elongated, 

 somevvhat roundish; they are blaekish, the whole apical margin is 

 crenulated or has small teeth, which on the dorsal side bear hairs 

 inwardly which are angularly bent at the apex, and outwardly shorter, 

 straight hairs; on the ventral side are long, shghtly curved hairs. 

 Legs quite black, coxæ greyish, femora somewhat greenish; hind meta- 

 tarsi slightly shorter than the second joint. The legs have short, 

 black hairs, posterior femora with one preapical bristle; front tibiæ 

 with bristles above and one on the posterior side; middle tibiæ with 

 two rows of bristles above and one ventral bristle; hind tibiæ like- 

 wise with two rows above, and with only one small ventral bristle. 

 Wings brownish tinged, most towards the anterior margin ; veins black; 

 discai vein with a very small bend, converging towards the cubital 

 vein, the first posterior cell somewhat narrowly open; axillary lobe 

 not large. Squamulæ yellow, with a black fringe. Halteres yellow. 



Female. Epistoma a little broader than in the male, and the antennæ 

 shorter, with the third joint not longer than broad; for the rest similar 

 to the male. 



Length 3 — 3,5 mm. 



H. vivax is very rare in Denmark, only two specimens, a male 

 and a female, have been caught, one in Vejle Nørreskov on ^h 1908 

 (the author), and one at Laven near Silkeborg in the first part of 

 August 1881 (H. J. Hansen). 



Geographical distribution : — Middle Europe down into Hungary 

 and the Alps, and further in Italy; it seems to have its northern 

 limit in Denmark, as it is not known from Scandinavia, nor from 

 England. 



7. H. nanus Macq. 



1827. Macq. Soc. Se. Lille, 1827, 66, 15, et 1834. Suit å Buff. I, 

 465, 27 (Dolichopus). — 1838. Meig. Syst. Beschr. VII, 162, 60 {Doli- 

 chopus). 1903. Kat. palåarkt. Dipt. II, 312. — Dolichopus minimus Zett. 

 1849. Dipt. Scand. VIII, 3088, 71-72. 



Male. Vertex and frons blaekish green. Epistoma narrow, white. 

 Palpi dark. Occiput blaekish or greenish black, a little greyish 

 pruinose; postocular bristles black. Antennæ black, a little elongated, 

 slightly longer than the head, the third joint slightly or not longer 



