136 
it is distinet from this species among others by the hypogygium 
and the hairs below hind femora. 
7. A. chaetopyga n. sp. <}. 
Frons slightly broader than high, black, a little greyish, duli; 
inner bristle of lower row in the same or nearly the same height 
as the outer and about in the middle between it and the upper 
supraantennal; supraantennals unequal, the lower considerably smal¬ 
ler than the upper; upper supraantennals as distant as the inner 
bristles of middle row, the lower more approximated. Antennæ 
somewhat small, black, arista distinetly pubescent. Palpi not large, 
yellow, a little dusky. Thorax black, somewhat shining. Mesopleura 
with uniform bristles. Abdomen black, duli, the hairs inereasing in 
length behind, on fifth segment already a little longish and at the 
hind margin of sixth segment they are very long all round, as long 
as the segment itself and bristly, also at the sides of fifth and 
sixth segments the hairs are somewhat long. Hypopygium not small, 
especially somewhat long and the side parts prolonged backwards 
below in a little projection ; on each side there is an a little oblique 
or nearly vertical row of about five bristles and still two bristles 
further upwards; there is a small, somewhat spatula-shaped yellow- 
ish ventral plate, broadest at the end; anal tube not large, brown- 
ish. Legs brown, front legs only slightly paler; the hind femora 
have below in the proximal two thirds a fringe of distinet but not 
long hairs, they are shortest at the base, longish towards the end; 
the bristles on hind tibiæ of about medium size, not numerous. 
Wings somewhat yellowish brown, costa not quite reaching the 
middle, about 0,48 of the wing-length, costal divisions about as 
3—2—1, costal cilia long, fourth vein curved at the origin, for 
the rest nearly straight, seventh vein quite straight. Halteres yel¬ 
low. — Length 1, 6 mm. 
Ermelund 2 % 1920 (the author), one male. 
8. A. setigera n. sp. g . 
Fions broader than high, greyish black, duli; inner bristle of 
lower row slightly below the outer or nearly in the same height 
and neaiei to it than to the upper supraantennal; supraantennals 
equal or nearly, the upper as distant as the inner bristles of the 
4 
