Dolichopodidae. 147 



there are black, inwards directed halrs in about the apical half. Legs 

 yellow, front coxæ grey in about the apical half, posterior coxæ grey, 

 a little yellowish at the apex; front tarsi somewhat darkened towards 

 the apex, middle tarsi with the apex of metatarsus and the four fol- 

 lowing joints black; hind tibiæ black at the apex, and hind tarsi 

 black. The legs have short, black hairs; front femora with long hairs 

 on the postero-ventral side in the apical part, shorter towards the 

 base; the posterior femora have a fringe of long, black hairs below 

 in about the apical half; posterior femora with three to five preapical 

 bristles; tibiæ rather bristly, front tibiæ with bristles above and on 

 the postero-dorsal side, and with three to five bristles on the postero- 

 ventral side; middle tibiæ with rows of bristles on the antero-ventral, 

 antero-dorsal, dorsal and postero-dorsal side, and with one or two 

 ventral bristles below the middle; hind tibiæ with rows of bristles 

 above, and with a row on the antero-ventral side, besides with some 

 small ventral bristles; middle metatarsi with one dorsal bristle, hind 

 metatarsi with about three dorsal bristles, two anterior, but only 

 small ventral bristles. Wings slightly tinged; veins black, costa with 

 a small swelling; discai vein with a quite obtuse bend; axillary lobe 

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

 of black, somewhat curled hairs. Balteres pale yellow. 



Female. Epistoma broader than in the male, but not specially 

 broad, white or greyish white. Antennæ of the same or about the 

 same length as in the male. Femora without fringes. Wings without 

 costal swelling. The hairs in the squamular fringe not curled. 



Length 4,8 — 7 mm. 



D. ungulatus is by far the most common species of the genus in 

 Denmark; it has been taken in every part of the country, and it 

 occurs both at water and on humid piaces, and also sometimes on 

 relatively dry localities, and both near the coast and inland; it is 

 generally present in great numbers. My dates are 7'' to the first part 

 of August. 



Geographical distribution: — Europe down into Italy; towards 

 the north to northern Scandinavia, and in Finland. It seems to be 

 a very common species everywhere. 



Remarks: As is well known Loew has shown (Zeitschr. f, gesammt. 

 Naturwissensch. XLVIII, ]876, 9), that Musca ungulata Linné, Syst. 

 Nat. Ed. X, is identical with Nemotelus aenens De Geer, while Musca 

 ungulata Linné, Fn. Suec. Ed. II, 1761, 457, 1858 is quite another 

 Dolichopodid; it is therefore incorrect when Fn. Suec. Ed. II, is quoted 

 under D. ungulatus in Kat. palåarkt. Dipt. 



10* 



