33 
38. A. bvevipennis n. sp. $ 
Female. Frons broader than long, greyish black, slightly shin- 
ing; inner bristle of lower row slightly below the outer and slightly 
nearer to it than to the upper supraantennal; supraantennals not large, 
unequal, the lower pair somewhat smaller than the upper; they are 
approximated, upper pair nearer together than the inner bristles of 
the middle row and the lower pair still more approximated. An- 
tennæ somewhat small, brownish black, arista distinctly pubescent. 
Palpi yellow, somewhat dusky, of ordinary size, the bristles well 
developed. Thorax black; mesopleura bare. Scutellum with two 
bristles. Abdomen black. Legs brownish yellow to dark brown, 
the front legs the paler; bristles on hind tibiæ very fine and 
numerous. Wings small and short, scarcely as long as abdomen ; 
they are considerably brown, veins brown; costa very long, 0,™ 
of the wing-length, costal divisions proportionately as 14—12 — 7, 
thus 1 nearly equal to 2 and double 3; fork long, the angle some¬ 
what large, costal cilia relatively very long; fourth vein, which on 
account of the long costa is very short, curved at the origin. Hal- 
teres whitish yellow. Length l,i —1,5 mm; in a specimen of a length 
of l,i mm the wing was 0,86 mm long and 0,37 mm broad. 
Ry in Jutland 9 /t and lx h 1918 (the author); two females; 
they were taken under dead leaves of beeches together with A. 
longicostalis Wood. 
This species is evidently related to longicostalis but is dis- 
tinguished by the very short wings. 
39. A. breviterga n. sp. 5 . 
Female. Frons considerably broader than long, black; the brist¬ 
les strong, inner bristle of lower row slightly lower than the outer, 
placed on a straight line with the upper supraantennals and a little 
nearer the outer bristle than the upper supraantennal; supraanten¬ 
nal bristles unequal, the lower pair somewhat weaker than the 
upper; upper supraantennals nearer together than the inner bristles 
of the middle row and the lower supraantennals still more approx¬ 
imated. Antennæ dark brown, arista distinctly pubescent. Palpi 
of full size but rather narrow, yellow, with the bristles well de¬ 
veloped. Thorax varying in colour from black to brown; meso- 
Vidensk. Medd. fra Dansk naturh. Foren. Hd. 71. 3 
