76 Orthorrhapha brachycera. 



fringe of long, black cilia below in the apical half; posterior femora 



with one preapical bristle; front tibiæ with rows of bristles above 



and on the posterior side; middle tibiæ with about four 



antero- and two postero-dorsal bristles, one dorsal above 



the middle and one ventral below the middle; hind tibiæ 



somewhat thickened towards the apex, with two dorsal 



rows of bristles and one ventral bristle towards the apex, 



besides with a ventral row of fine bristles ; hind metatarsi 



with bristles above and anteriorly, and with shorter 



bristles below. Wings somewhat short, hyaline; veins 



blackish brown, costa with a small, black swelling; discai 



vein with a somewhat large and angular, but obtuse bend; 



axillary lobe moderately developed, anal vein stretching 



somewhat forwards. Squamulæ yellow, with a black 



fringe. Halteres yellow. 



Female. Epistoma broad, darker grey than in the 



male. Antennæ shorter, third joint very short. Hind 



femora without fringe, and hind tibiæ not thickened. 



Fig. 20. Wings a little fumigated, especially towards the anterior 

 D. melano- ■ , .,, , „. 



pusd, front i^argm; costa without swelhng. 



tarsus from Length 4 — 4,2 mm. 



X 35^ ^' ^^^^^'^^opus is rare in Denmark, only three speciraens 



are known, a pair taken by Stæger in a fen in Dyrehaven 



in August, and a male taken by H. J. Hansen on Bornholm at Allinge 



in July. 



Geographical distribution: — Northern and middle Europe, down 



into France; towards the north to southern Sweden. 



5. D. planitarsis Fall. 



1823. Fall. Dipt. Suec. Dol. 12, 8. — 1831. Stann. Isis 1831, 122, 

 17. — 1842. Stæg. Krøyer's Tidsskr. IV, 30,21. — 1843. Zett. Dipt. Scand. 

 II, 516,14, et 1855. XII, 4624, 14 et 1859. XIII, 5042, 14. — 1862. Schin. 

 F. A. I, 214. — 1903. Kat. palåarkt. Dipt. Il, 302. 



Male. Vertex and frons green. Epistoma moderately narrow, 

 silver-white. Palpi greyish. Occiput green, greyish pruinose; postocular 

 bristles black. Antennæ black, elongated, longer than the head, third 

 joint considerably longer than broad, triangularly ovate; arista short. 

 Thorax green, towards the sides sometimes somewhat olive, shining, 

 slightly brownish pruinose. Scutellum fmely pale-haired at the margin; 

 postscutellum green, greyish pruinose. Pleura greenish, grey pruinose; 

 propleura with fine, pale hairs and a black prothoracic bristle. Ab- 

 domen green with slight, bronze-coloured reflexes, finely whitish 



