9 
corner uppwards and backwards; anal tube of some length, black, 
the apical hairs not small. Legs brownish, front metatarsus dilated, 
about as vide as the end of tibia, the anterior margin straight, 
the posterior margin a little convex; the hairs below the basal 
half of hind femora only slightly longish; bristles on hind tibiæ 
small but distinet, more numerous than in the preceding species, 
about 14 in number; hind tibiæ as long as the three first tarsal 
joints. Wings a little yellowish but rather clear, veins brown, thin 
veins distinet though not strong, seventh vein distinetly finer and 
paler; costa 0,45 of the wing-length, costal divisions proportionately 
as 13 — 6 — 3; costal cilia long; fourth vein.evenly curved. Halt- 
eres black. — Female. Similar to the male, costa a little longer; 
front metatarsi less but still perceptibly thickened. Length 1,6— 
1,8 mm. 
Lyngby s /e 1917 (the author), Holte 4 /s and 19 /s 1917 (Th. 
Mortensen); three males and one female. 
10 . A. daetylata n. sp. d 
A species related to the preceding but distinguished especially 
by besides the first joint of the front tarsi also the last joint being 
a little dilated. 
Male. Frons blackish grey, somewhat broader than long; inner 
bristle of lower row a little below the outer and nearly in the 
same distance from it as from the upper supraantennal; the supra- 
antennals nearly equal, the upper about equally distant with the 
inner bristles of the middle row, the lower a little more approx- 
imated. Antennæ somewhat small, blackish brown, arista distinetly 
pubescent. Palpi yellow, of ordinary size and armature. Thorax 
black, pleura a little brownish especially anteriorly; mesopleura 
bristly the bristles equal. Scutellum with two bristles. Abdomen 
black, venter yellowish or brownish. Hypopygium of medium size, 
as long as high, with two or three small bristly hairs on each side 
below, one above the other; ventral plate yellowish, rather short; 
anal tube relatively somewhat large, clear yellow. Legs yellow, 
hind femora very slightly darkened atapex; front metatarsi dilated, 
as wide as the end of tibiæ,. the following joints slightly stout but 
