Aphiochaeta. 409 



with blackish brown pubescence. Mesopleura bare. Abdomen deep 

 black, dull, the short hairs almost only visible at the hind margins 

 of the segments and at the sides; at the sides they increase in length 

 behind and are thus conspicuous on the last segments, and they are 

 rather long at the hind margin of sixth segment. Hypopygium of 

 medium size, greyish, when well exposed it shows above in the middle 

 a black, polished spot just at the base; on each side there is a dense 

 group of bristles, stretching from below upwards; the bristles are 

 curved downwards and are strongest below; when seen from behind 

 they present themselves as a dense, vertical series; ventral plate 

 small; anal tube short, black. Legs black or blackish, front legs only 

 slightly paler; hind femora with a few longish hairs below the basal 

 part; bristles on hind tibiæ distinct, but small. Wings somewhat 

 greyish, veins blackish; costa about 0,41 of the wing-length, costal 

 divisions about as 16 — 6 — 5 or about 3 — 1 — 1, but varying, and some- 

 times 1 relatively longer; angle at fork somewhat small; costal cilia 

 moderately long; fourth vein evenly and slightly curved. Halteres 

 black. 



Female. Similar to the male in all respects, only the palpi a 

 little paler and with the short bristles longer. 



Length 0,9 — 1 mm. 



A. hirticaudata is somewhat rare in Denmark; in a churchyard 

 at Copenhagen, Holte and on Bogø south of Sealand (the author); 

 the dates are ^Va — ^Vs in 1917 to 1919; in the first named locality 

 I took it with the net in high grass, especially Bromus, and it was 

 here present in rather great numbers. 



Geographical distribution: — Besides from Denmark known 

 from England. 



146. A. cinerella Lundbk. 

 1920. Lundbk. Vidensk. Meddel, fra Dansk naturh. Foren. 71, 29, 33. 



Male. Frons somewhat broader than high, black, slightly greyish 

 and very slightly shining; bristles strong, inner bristle of lower row 

 slightly below the outer and equally distant from it and from the 

 upper supraantennal ; supraantennal bristles unequal, the lower 

 scarcely half as large as the upper; the upper supraantennals approxi- 

 mate, about as distant as the inner bristles of middle row or nearer 

 together, the lower more approximate. Antennæ of ordinary size, 

 black, arista almost bare. Palpi more or less dusky to nearly blackish. 



