100 Orthorrhapha brachyeera. 



teeth with curved, black hairs; only the most dorsally placed tooth 

 is longer; the ventral margin serrated with curved hairs, and on the 

 inner side of the margin only few, fme, inwards directed hairs. Legs 

 yellow, posterior coxæ grey, slightly pale just at the apex; front tarsi 

 with apex of metatarsus and the foUowing joints black ; middle tibia 

 somewhat long, depressed, flat and very thin, slightly swollen at the 

 apex; it has a brown line along the dorsal side and is white near 

 the apex with the very apex black; middle tarsi black, the first joint 

 a little flat and feathered at the margins; hind tibiæ black just at 

 the tip, and hind tarsi black. The legs have short, black hairs, paler 

 below the hind femora; posterior femora with one preapical bristle; 

 front tibiæ with bristles above, and two on the postero-ventral side; 

 the middle tibiæ have three anterior bristles and one postero-dorsal 

 near the base, and besides there are a dorsal, an anterior and a ventral 

 bristle near the apex; the hind tibiæ have two dorsal rows, and a 

 ventral bristle towards the apex, and besides a ventral row of small 

 bristles; hind metatarsi with two bristles above, an anterior, and 

 small bristles below. Wings very slightly tinged ; veins blackish, costa 

 with a quite small swelling; discai vein with a somewhat large, ob- 

 tuse bend; axillary lobe very large, anal vein going much downwards. 

 Squamulæ yellow, black fringed. Halteres pale yellow. 



Fig. 26. Antenna of D. pluynipes Q, from the inside. X 65. 



Female. Epistoma broad, whitish grey or light yellowish grey. 

 Antennæ shorter than in the male, third joint short. Middle legs 

 simple, tibiæ with four antero-dorsal, two postero-dorsal or dorsal 

 bristles, and one ventral bristle below the middle. ^ Wings a little 

 darker than in the male; costa without swelling; axillary lobe a little 

 smaller. 



Length 4 — 4,5 mm, 



D.plumipes is very common in Denmark, and is, I think, in this 

 regard next to ungulatus; it has been taken in every part of the 



1 Mik says (Verh. zool. bot. Gesell. Wien, XXX, 1880, 596, nota) that the 

 female of plumipes has two bristles on the ventral side of the middle tibiæ. This 

 certainly must be due to some mistake. 



