Empididae. 193 



bristle, a posthumeral, two to three notopleural, a supraalar and a 

 postalar bristle, all black. Scutellum has six black marginal bristles, 

 two of which are long. Pleura greyish black. Abdomen velvet black 

 above, more greyish on the sides; it is somewhat sparingly clothed 

 with longish, erect, black hairs. Venter greyish black, with long, 

 strong hairs. Exterior genitalia with some bristly hairs. Legs black; 

 coxæ somewhat brownish pruinose; hind tibiæ strongly dilated to- 

 wards the apex, club-shaped, hind metatarsi very thick and swollen. 

 Anterior femora with long hairs on the postero-ventral side, which 

 are strengest in the apical half; hind femora with long hairs above 

 and below, longest above; anterior tibiæ with short hairs, middle 

 tibiæ also with a couple of bristles on the dorsal side; hind tibiæ 

 with long hairs above, longest and strongest on the thickened apical 

 part; hind metatarsi with longish I hairs above. The hairs are black. 

 Wings hyaline, somewhat iridescent and transmitting the light a 

 little reddish. Veins dark brown to black. Stigma slightly brownish. 

 Halteres black. 



Female. Similar to the male. Eyes separated, frons greyish black. 

 Thorax and abdomen slightly more shining than in the male, and 

 shorter haired. Legs simple, and likewise shorter haired. Halteres paler 

 or darker brownish. 



Length 2,2—2,8 mm. 



This species is in the male at once distinguished from vehitinus 

 by the shape of the hind legs; in the female it is recognised by the 

 black, not grey thorax, and in both sexes by the much shorter 

 dorsocentral and acrostichal bristles, and by the latter being quadri- 

 serial. 



M. anomalus is, like the preceding, not common in Denmark; 

 Charlottenlund (Stæger); on Langeland at Lohals (the" author); on 

 Lolland at Maribo (Schlick) and on Bornholm at Hasle (H. J. Hansen). 

 My dates are only ^^le to the last half of July; it occurs evidently less 

 early than vehitinus; otherwise it occurs in similar localities. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to middle Sweden. 



9. Oedalea Meig. 



Species of somewhat small size and a somewhat slender shape, 

 the colour of the body black. The head globular, as broad as thorax, 

 arched behind, and here with some hairs. Eyes large, occupying the 

 whole front side of the head; they are touching in the male, well 

 separated in the female; in the male the facets in the upper half part 



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