196 Orthorrhapha brachycera. 



known. I possess two specimens of Oe. flavipes, which are stated to 

 have been bred from wood; probably tlien the larvæ live in decaying 

 wood, but they are certainly carnivorous. 



The species of Oedalea occur in woods, especially on open, but 

 somewhat shaded piaces; they have a somewhat heavy flight; they 

 must be considered carnivorous. They seem everywhere to be rather 

 rare. The species are not sufficiently studied, probably because the 

 material for examination is generally small. The best work about 

 them is still Loew's monograph from 1859. 



The genus comprises 10 species from the palæarctic region, 4 

 have hitherto been found in Denmark. 



Tahh of Species. 



1. Wings with two brown patches at the anterior margin, 

 one at each end of the stigma, this latter almost colour- 



less 1 . hijhotina. 



— Wings without patches, stigma brown 2. 



2. Hind femora with the apical part brown or blackish; 



scutellar bristles yellow 3. stigmatella. 



— Hind femora quite yellow 3. 



3. Scutellar bristles yellow; antennæ long, the style some- 

 what thick 2. flavipes. 



— Scutellar bristles black; antennæ shorter, the style bristle- 



shaped 4. Holmgreni. 



1. Oe. hybotina Fall. 



1815. Fall. Dipt. Suec. Empid. 31, 39 (Empis). — 1820. Meig. Syst. 

 Beschr. II, 536, 1, Tab. XXI, Fig. 27. — 1842. Zett. Dipt Scand. I, 245, 1. 



— 1859. Loew, Neue Beitr. zur Kenntn. der Dipt. VI, 47, 3. — 1862. 

 Schin. F. A. I, 80. — 1903. Kat. palåarkt. Dipt. II, 259. 



Male. Eyes touching; epistoma black, shining; palpi black. Occi- 

 put black, with black, below with whitish hairs. Antennæ long, 



Fig. 77. Antenna of Oe. hybotina. X 65. 



blackish brown; the basal joints may be lighter; the style is broad, 

 almost as broad as the apex of the third joint. Thorax black, 

 shining; the disc clothed with short, somewhat adpressed, greyish 

 vvhite hairs, leaving two narrow stripes bare. Of bristles a notopleu- 

 ral and a small postalar bristle present, both yellow, and besides 

 some smaller hairs in the præsutural depression. Scutellum with six 



