131 
Halteres yellow. — Female. Similar to the male; frons a little 
higher; antennæ smaller; palpi more greyish and with longer bristles, 
especially one long at the end. Clypeus protruding, shining. On 
the venter the fourth segment is hairy, the fifth seems to have 
hairs only towards the hind margin, the sixth is hairy; the seventh 
sternite is elongated, of the same breadth in the whole length and 
excised in the hind margin, the corners being drawn out and a 
little hook-like, it is hairy below. The wings have first division a 
little shorter, the divisions about as 6—5—3. — Length 2—3 
mm, the female the larger. 
Of this species I possess only the female, the above description 
of the male is drawn from a German specimen kindly sent me 
from Pater Schmitz. 
I have taken the species in Geel Skov on 1 io— 23 /io in 1918 
and 1919, three females in all ; besides in Denmark the species 
i 
also occurs in Holland and Germany according to specimens kindly 
sent me from Pater Schmitz. 
Aphiochaeta Brues. 
Scutellum with four bristles. 
1 . A. prodroma n. sp. J'. 
Frons somewhat but not much broader than long, black, duli; 
inner bristle of lower row a little below the outer and nearer to 
it than to the upper supraantennal; supraantennals unequal, the lower 
about half the size of the upper; upper supraantennals approxim- 
ated, nearer together than the inner bristles of the middle row, 
the lower close to the upper and direct below them, not nearer 
together. Antennæ somewhat large but not as large as in fusci- 
nervis , black, arista quite short-pubescent. Palpi brownish. Thorax 
black, a little shining. Mesopleura bare. Scutellum with four nearly 
equal bristles. Abdomen black, duli. Hypopygium somewhat small, 
greyish black, with numerous conspicuous haiis on the sides be¬ 
low; anal tube of medium length but high, blackish. Legs black, 
front legs and middle tibiæ more brownish black, hind femora a 
little dilated with long, somewhat strong hairs below the basal 
half; bristles on hind tibiæ of medium size. Wings somewhat 
9 * 
