135 
the hairs below basal half ol hind femora distinet but not long, at 
most sligthly longish; bristles on hind tibiæ small and fine. Wings 
brownish tinged, costa 0,47 of the wing-length, costal divisions about 
as 5 — 3 _ 2 ; costal cilia moderately long, fourth vein evenly and 
not mueh curved. Halteres black. Length about 1,5 mm. 
This species is, on account of its thickened front tarsi, black 
halteres and yellow legs, easily placed, and I think that the female 
therefore, when it turns up, will be identified without difficulty. 
Ørholm 5 /o 1918 (the author), one male. 
6. A. dubiosa ri. sp. ( ? )• 
Frons somewhat broader than high, greyish black, duil; inner 
bristle of lower row a little below the outer and mueh nearei to 
it than to the upper supraantennal; supraantennals nearly equal, 
the upper about as distant as the inner bristles of the middle row, 
the lower a little weaker and nearer together. Antennæ black, 
arista short-pubescent. Palpi yellow, with well developed bristles. 
Thorax black, a little shining. Mesopleura with small, uniform 
bristles. Abdomen black, duil. Hypopygium small, greyish black, 
on each side below there are about three small, vertically placed 
hairs, and more above on the hind part still a couple of hairs, 
anal tube of medium size or small, blackish. Legs brownish or 
darker to blackish brown, front legs only slightly paler, hind fem¬ 
ora with sparse, long or longish hairs below the basal half, bristles 
on hind tibiæ distinet but small. Wings clear or very slightly tinged, 
veins brownish, thin veins paler; costa.rather short, about 0,45 of 
the wing-length, costal divisions about as 11—6 — 4 thus 1 about 
equal to 2 —3; costal cilia ordinarily long, fourth vein slightly and 
evenly curved in the whole length. Halteres black. Female. I 
possess a female which may belong here; it seems to agree well 
with the male, but 1 am not sure. — Length 1,5 mm. 
Holte, Hillerød and Ry in Jutland l5 / 7 — 19 /s in 1917 and 1918 
(Th. Mortensen, the author); the possible female is taken in Erme 
lund' 15 / 5 1919. 
This species is not very characteristic; it is one of the rather 
numerous species belonging to the group with costa longer than 
0 , 44 , long cilia, uniform mesopleural bristles, simple front tarsi and 
black halteres. In Wood’s table it will run down to nigripes, but 
