Orthorrhapha brachycera. 



the middle; hind tibiæ with a row of somewhat long dorsal bristles, 

 and a few, very small ventral bristles ; front tarsi with some long 

 hairs at the apex above, and the front pulvilli much enlarged. Wings 

 somewhat brownish tinged; veins blackish brown. Squamulæ yellow, 

 with a black fringe. Balteres yellow. 



Fig. 73. Wing of D. oculatus d*. 



Female. Frons broad, greenish black, somewhat greyish pruinose. 

 Epistoma broad, grey. Palpi large, yellowish grey. Front femora 

 with shorter hairs below, hind femora without long hairs at the apex, 

 and middle tibiæ with two antero-dorsal bristles. Abdomen not yel- 

 low above but only at the base of the venter. 



Length 3,3 — 4,2 mm. 



V. oculatus is somewhat rare in Denmark, and has only been 

 taken on a few occasions ; Charlottenlund, Gm-re (Stæger) ; on Funen at 

 Veflinge, and in Jutland at Laven near Silkeborg and at Sæby (H. J. 

 Hansen). The dates are from ^h to the first part of August. Stæger 

 took it on Alnus. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to northern Sweden^ and in Finland. 



2. D. Hoffmannseggii Meig. 



1830. Meig Syst. Beschr. VI, 360, 5. — 1857. Loew, Neue Beitr. V, 

 47. - 1862. Schin. F. A. I, 187. — 1903. Kat. palåarkt. Dipt. II, 321. 



Male. Vertex blackish green, frontal triangle grey; eyes touching. 

 Epistoma broad, grey. Palpi small, yellow. Occiput grey; postocular 

 bristles black. Antennæ black or brownish black, third joint short; 

 arista distinctly dorsal. Thorax green or bluish green, densely grey 

 pruinose, a little shining. Pleura grey pruinose. Abdomen dark green, 

 with the light from behind a darker middle-line is seen ; second seg- 

 ment more or less yellow on the basal part; abdomen clothed with 

 short, black hairs, longer at the sides, and it has somewhat long 

 hindmarginal bristles, longest on the first segment; the eighth segment 



