14 Orthorrhapha brachycera. 



wings are considerably longer tlian in ci/li)idrica; they are a little 

 yellowish with brown veins; the branches of the cubital and discai 

 veins are only slightly curved, the cubital and posterior cells are 

 rather long; the peduncle of the second cubital cell from the medial 



Fig. 6. Wing of L. gtittiventris. 



cross-vein is not longer than the peduncle of the second posterior 

 cell; the fourth posterior cell has no peduncle. Balteres yellow, the 

 knob may be slightly darkened. 



Female. With exception of the genital differences quite agreeing 

 with the male. 



Length 8 — 13 mm. 



This species is at the first glance somewhat like the preceding 

 but on closer examination it differs in many points; especially the 

 wings and the colour of the legs are good characters, further the 

 pubescence of the antennal style and the colouration of the abdomen, 

 Zetterstedt 1. c. records it as L. guttiventris Stæger in litteris, so that 

 the name is due to Stæger. 



L. guttiventris is much less conimon in Denmark than the pre- 

 ceding species; Hillerød, Grib Skov; on Funen at Odense, Veflinge 

 and Faaborg and in Jutland in Greisdalen, at Frijsenborg, Silkeborg, 

 Gjessø near Silkeborg, Hald, and Fusingø near Randers. My dates 

 are ^^k to August. 



Geographical distribution : — The species is distributed in northern 

 and middle Europe down into i\.ustria; towards the north in southern 

 Scandinavia; it seems everywhere to be more rare than cylindrica. 



2. DioctPia Meig. 



Species of middle to somewhat large size and of a more or less 

 slender shape; the colours are dark or black, and the species are 

 very slightly hairy, almost bare. Head somewhat broader than thorax 

 and much broader than high; it is short and the posterior surface is 

 flat. The eyes are large, the epistoma rather broad without any 

 distinct or at all events only a small callus; the epistomal beard not 

 dense. Antennæ inserted very high, near to each other on a more 

 or less prominent tubercle. The frons on account of the high inser- 



