Dolichopodidae. 397 



B. bicolorellum is rare in Denmark, it has only been taken in 

 Charlottenlund (Stæger) and in Lyngby Mose (the author); I took it 

 on -^/ii. We have in all eight specimens, among which only one male, 

 but some specimens were sent to Zetterstedt. In some manuscript 

 notes from Stæger I read, that he took it on Alnus from June to 

 October, and he suggests that there is more than one brood in the year. 



Geographical distribution :^ — Northern and middle Europe down 

 into Styria; towards the north to middle Sweden. 



32. Anepsiomyia Bezzi. 



(Anepsius Loew.) 



Very small species. Head of the breadth of thorax or a little 

 broader, somewhat semiglobular, a little arched behind. Vertex not 

 excavated; ocellar tubercle a little prominent. Frons broad, broadest 

 in the female, decreasing in breadth towards the antennæ. There are 

 ocellar, outer vertical and postvertical bristles, and besides a pair of 

 small hairs on the ocellar tubercle. Eyes large, somewhat oval, a 

 little narrowed downwards, with short, almost microscopic hairs. The 

 facets are slightly enlarged towards the epistoma in the male. The 

 eyes are touching belovv the antennæ in the male\ well separated in 

 the female. The postocular bristles form a single row; on the lower 

 part of occiput there are only a few hairs. Antennæ inserted near 

 to each other above the middle; they are elongated in the male, short 

 in the female; the basal joints are short, the second nearly simple; 

 the third is in the male elongated, somewhat band-shaped, rounded 

 at the end, in the female it is short, triangular, pointed; the arista is 

 dorsal, inserted at the base of the third joint, in the female less near 

 the base; it is longer than the antennæ, its first joint long. The basal 

 antennal joint is hairy above, the second has small bristles at the 

 apex, the third and the arista are distinctly haired, the former some- 

 what strongly. Epistoma narrow and disappearing above in the male, 

 moderately broad in the female; the clypeus is short, indistinctly 

 separated from the epistoma, bent a little angularly inwards ; it does 

 not reach the lower margin of the eyes. The proboscis is very slightly 

 protruding, and only in the female, it and the oral aperture are 

 somewhat larger in this sex than in the male. Thorax rectangular, 

 somewhat high, and distinctly arched above; behind there is a flat 



1 Loew figures in Mon. of Dipt. of N. Am. Il, PI. IV, fig. 14a the head of the male, 

 it shows a distinct, not quite narrow epistoma; if this is correct, my male may 

 have the face contracted by exsiccation. Loew's figure of the antenna of the 

 male, 14 b, is not correct, the third joint is relatively longer and not pointed. 



