370 Orthorrhapha brachycera. 



except the apex more or less pale. The legs have short, blackish 

 halrs, coxæ pale-haired; front coxæ with pale, bristly hairs at the 

 apex, hind coxæ with a black bristle; femora slightly pale-haired 

 below; front tibiæ with a dorsal and a postero-ventral bristle; middle 

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

 ventral bristle ; hind femora with a preapical bristle, hind tibiæ with 

 sonie dorsal bristles in two rows, and two ventral bristles; hind 

 metatarsus as long as the second joint. Wings slightly brownish 

 tinged; veins black; the convexity on the last part of the discai vein 

 not darkened; posterior cross-vein about in the middle, the part of 

 the discai vein from the small to the posterior cross-vein shorter than 

 the second part. Squamulæ yellow, with a brown fringe. Halteres 

 yellow. 



Female. Similar to the male, epistoma very slightly broader, 

 more greyish. 



Length 1,7 mm. 



Remarks : I have followed the Kat. palåarkt. Dipt. in the synonymy, 

 but I am not sure on this point, as Loew says about varicornis "alle 

 Hiiften schwarz" while picticornis has quite yellow front coxæ; this 

 faet seems to have been overlooked by Mik (1. c); besides Loew's 

 species has dark front femora. 



C. picticornis is rare in Denmark ; Amager (Stæger), Damhussøen 

 (the author). I took my specimens on ^^/o. One of my specimens 

 wants the posterior cross-vein entirely. 



Geographical distribution: — Northern and middle Europe dovvn 

 into Austria, towards the north to middle Sweden. 



26. Cctomus Mik. 



This genus, which was separated from Campsicnemus by Mik in 

 1878, is in most respects similar to the latter genus. The characters 

 are chiefly the following: The clypeus reaches in the male below^ the 

 lower margin of the eyes, and is broader and rounded below; epistoma 

 very narrow above, the eyes of the male almost or really touching 

 below the antennæ, in the female very narrowly separated. Antennæ 

 short, the third joint roundish, not longer than broad. Acrostichal 

 bristles absent. Scutellum with two small hairs between the marginal 

 bristles. Abdomen short, with the same number of visible segments 

 as in Campsicnemus. Legs slender, simple; hind femora wnth a preapical 

 bristle; middle tibiæ with one ventral bristle, for the rest the legs 

 with bristles as in Campsicnetnus; hind metatarsus a little shorter 

 than the second joint. Wings in the male long, narrow^ in the basal 



