362 Orthorrhapha brachycera. 



simple, front coxæ sometimes darker, and the legs may on the whole 

 sometinies be darker, with the tibiæ more or less brownish; middle 

 tibiæ with three antero-dorsal and one postero-dorsal bristle, and with 

 two ventral bristles. 



Length 2,5— 3,3 mm. 



C. scamhus is common in Denmark; Ermelund, Bøllemosen, Geel 

 Skov, Ruderhegn, Hillerød, Tyvekrog, Frerslev Hegn, Sorø; on Funen 

 at Odense; in Jutland in Greisdalen at Vejle, Nebsager near Horsens, 

 Laven near Silkeborg and Thisted; on Bornholm at Hammeren and 

 Almindingen. My dates are ^Vg— ^°/i2. It occurs in low herbage in 

 fens and at the horders of water, both in woods and outside. 



Geographical distribution: — Northern and middle Europe down 

 intoFrance; towards the north to northern Scandinavia, and in Finland. 



2. C. curvipes Fall. 



1823. Fall. Dipt. Suec. Dol. 20, 27 (Dolichopus). — 1824. Meig. Syst. 

 Beschr. IV, 65, 10 {Medeterus). — 1843. Zett. Dipt. Scand. II, 599, 86, 

 et 1859. XIII, 5064, 86 {Dolichopus). — 1862. Schin. F. A. I, 234. — 

 1903. Kat. palåarkt. Dipt. Il, 345. 



Male. Vertex and frons dark blue. Epistoma very narrow above, 

 brown or brownish yellow, palest above. Palpi greyish white. Antennæ 

 black, third joint elongated triangular, pointed. Occiput greenish. 



Fig. 111. Antenna of C. curvipes cf. X 75. 



greyish pruinose; postocular bristles black above, the hairs below 

 whitish. Thorax olive, æneous or almost purplish, generally with a 

 greenish stripe in the middle, slightly pruinose at the margin; scutellum 

 bluish. Pleura æneous, grey pruinose, especlally below; propleura 

 with pale hairs and a black prothoracic bristle. Abdomen green or 

 æneous, more or less with coppery or violet reflex, slightly greyish 

 pruinose; it is clothed with short, black hairs, and has short hind- 

 marginal bristles at the sides, long on the first segment. Venter grey, 

 with whitish hairs. Legs yellow, coxæ grey, front coxæ often more 

 or less yellow on the apical part, sometimes to a rather high degree, 

 they are greyish white pruinose anteriorly ; anterior femora with more 

 or less distinct and extended dark stripes above and below; tibiæ a 

 little blackish at base and apex, the apex of the middle tibiæ most; 



