3 
palest at apex. Legs yellow or light brownish yellow, hind leg > 
darkest, below the basal half of hind femora a row of short but 
dense and somewhat strong hairs; bristles on hind tibiæ of medium 
size, about 16 in number. Wings rather strongly brownish or 
greyish brown infuscated; veins strong, brown; costa to the middle 
or beyond, costal divisions prop->rtionately about as 14 — 8—-5; 
fork longish but the angle not large; costal cilia moderately long, 
approaching the border between long and short; fourth vein with 
a distinet curve at the origin. Halteres black. — Female. Similar, 
the hind femora without any row of special hairs below. Length 
1,5 to nearly 2 mm. 
Ermelund, Holte, Bogø south of Sealand and Ry in Jutland 
s, /6— 8 /8 in 1917 and 1918 (Th. Mortensen, the author); in all 
seven males and four females. 
3. A. stichata n. sp. J $ . 
A species near albipennis Wood and pleuralis Wood but dis- 
tinguished from the first by the wings not being whitish and with 
a longer costa and by another hypopygium and from pleuralis by 
the hairs below hind femora and the hypopygium. 
Male. Frons greyish black, duli, 1 7a times as broad as long; 
bristles strong, inner bristle of lower row a little below the outer 
and a little nearer to it than to the upper supraantennal; supra- 
antennals nearly equal, the lower, however, the weaker, the upper 
pair about in the same distance as the inner bristles of the middle 
row; the lower a little more approximated. Antennæ black, of or- 
dinary size, arista distinetly pubescent. Palpi yellow, of ordinary 
size, the bristles well developed. Thorax black; mesopleura bristly 
with one long bristle below. Scutellum with two bristles. Abdomen 
black, a little greyish, generally with more or less distinet, very 
narrow paler hind margins to the segments; the hindmarginal hairs 
on sixth segment well developed. Hypopygium of medium size, 
knob-like, greyish or reddish grey; when exposed it presents at 
the lower margin some weak bristles or bristly hairs directed down- 
wards, and at the hinder dorsal margin some longish hairs directed 
more backwards; there is a broad and rounded yellowish ventral 
plate; anal tube rather short, yellow. Legs brownish yellow, the 
i 
