I 
138 
duli from a dense, nearly microscopical punctuation, along the whole 
hinder or lower margin somewhat dense, longish hairs are hanging 
downwards, they are in my specimen best developed on the left 
side; anal tube somewhat short but stout, black. Legs dark brown 
or blackish brown, front legs only slightly paler; hind femora rather 
broad, below the basal two thirds are unusually long and strong 
bristles, specially long below the middle; under the microscope 
these bristles are distinctly spinulose what is else not the case; 
bristles on hind tibiæ of good size. Wings somewhat brownish 
tinged; costa somewhat short, about 0,46 of the wing-length, costal 
divisions about as 13—7—5; costal cilia short but moderately, on 
the border between short and long, they are relatively few in 
number, strong and distinctly spinulose; angle at fork not large; 
fourth vein evenly curved only slightly more at the base. Halteres 
black. — Length nearly 2 mm. 
Ermelund 23 /s 1919 (the author), one male. 
10. A. pallida n. sp. £. 
Frons high, about quadratic, yellow; inner bristle of lower row 
well below the outer, about in the middle between it and the 
upper supraantennal; supraantennals very unequal, the upper not 
large, the lower only very small, nearly microscopical hairs; the 
upper supraantennals approximated, nearer together than the inner 
bristles of the middle row, the lower hairs more approximated 
Antennæ yellow, arista not long, distinctly pubescent. Palpi yellow, 
not large. Thorax yellow, dullish. Mesopleura bare. Abdomen yel- 
lowish, the segments blackish at the sides and hind margins in 
such a way that abdomen may be termed blackish with a series 
of semicircular yellow middle spots; venter yellow. Hypopygium 
large, yellowish grey with some small but distinet and bristly hairs 
at the lower margin, the hindmost being the longest; anal tube 
large, reddish yellow. Legs yellow, hind femora browri just at apex, 
with sparse long hairs below the basal half; bristles on hind tibiæ 
quite small and fine, bul distinet on the lower half. Wings a little 
yellowish, costa reaching the middle; costal divisions about as 7 
—5—2 thus 1 equal to 2 —|— 3, costal cilia short, angle at fork 
large; fourth vein slightly and evenly curved but a little recurved 
at apex. Halteres yellow. — Length 1,2 mm. 
