Dolichopodidae. 405 



often so densely as to hide the ground colour, with two faint, narrow, 

 dark brovvn stripes in the middle. Pleura slightly æneous, grey or 

 brown pruinose; propleura with some pale hairs, among which two 

 bristles. Abdomen green, æneous or more coppery, grey pruinose at 

 the sides, especially on the hind corners of the segments ; it is clothed 

 with short, blacii hairs; at the sides there are small and slightly 

 distinct hindmarginal bristles, long only on the first segment. Venter 

 grey. The outer lamellæ of the hypopygium reddish, with long hairs. 

 Legs yellow or brownish yellow, posterior coxæ grey with the apex yel- 

 lowish ; tibiæ more or less brownish, especially towards the apex, and 

 here often blackish to a smaller or greater extent; tarsi black, some- 

 times the base a little paler. The legs have short, blackish hairs; 

 posterior coxæ each with a black bristle; femora mainly short-haired, 

 posterior femora with a preapical bristle ; front tibiæ with some dorsal 

 bristles, middle tibiæ with about three antero-dorsal, three postero- 

 dorsal and two or three ventral bristles ; hind tibiæ with some dorsal 

 bristles in two rows, and some small ventral bristles. Wings some- 

 what blackish tinged; veins black, the last part of the discai vein 

 with a slight curve. Squamulæ yellow, with a very short, pale fringe. 

 Balteres yellow. . 



Female. Epistoma broader than in the male, æneous or coppery 

 as it is more thinly pruinose. Wings more brown. For the rest 

 similar to the male. 



Length 3 — 4 mm. 



T. ruficornis is very rare in Denmark, I have only taken flve 

 specimens on Fænø on '^^li 1907; they were taken on a salt marsh 

 at a little lagoon with brackish water; Mr. Th. Becker took it on 

 Bornholm. 



Geographical distribution: — Europe down into Spain; towards 

 the north to middle Sweden. 



35. Sclioenopliilus Mik. 



This genus, which was created by Mik in 1878, agrees in all 

 essential respects with the preceding; the chief differences are: The 

 third åntennal joint is quite round, the arista is inserted near the 

 middle of the front margin and thus subapical or almost apical. There 

 are only four dorsocentral bristles (according to Mik, my specimens 

 do not show it with certainty); no præsutural bristle, and only two 

 supraalar; there are only very few and small hairs on the front part 

 of the disc. Scutellum with two marginal bristles. 



