Aphiochaeta. 275 



at the hind margins of the segments and at the sides. Hypopygium 

 not large, partly withdrawn, but with some bristles on each side in 

 an ascending line, and with a large, yellowish ventral plate, broadly 

 roimded at the end; anal tube thin, but of medium length, brownish 

 with the apex yellow. Legs brownish, front legs more yellowish; 

 hind femora without any special hairiness below, though with the 

 short hairs more dense towards base than usual; bristles on hind 

 tibiæ small and delicate. Wings clear or nearly so, veins brownish; 

 costa 0,46 of the wing-length, costal divisions about as 4 — 2 — 1; 

 costal cilia long; fourth vein evenly curved. Halteres yellowish, some- 

 what dusky. 



Length 1,2 mm. 



Female. I possess a female which may belong here; it seems to 

 agree rather well, but the halteres are rather darkened, blackish; it 

 has only one longer mesopleural bristle. 



Of this species only one male specimen has been taken, Holte 

 ^"/e 1917 (Th. Mortensen). The possible female was taken at Jelling 

 in Jutland ^V? 1921 (the author). 



Geographical distribution: — Hitherto only known from Denmark. 



Group IIL 



Scutellum with two bristles. 

 Mesopleura bristly, with one or more longer besides the small bristles. 



Costa short. 



35. A. manualis Schmitz. 

 1919. Schmitz, Entom. Ber. Nederl. Ent. Ver. V, 113, 141. 



Male. Frons broad, about IV2 times broader than high, greyish 

 black, dull; inner bristle of lower row slightly below the outer and 

 near to it, much nearer than to the upper supraantennal ; it is placed 

 near the eye-margin or more inwards; the supraantennal bristles 

 unequal, the lower somewhat smaller than the upper, the upper in 

 about the same distance from each other as the inner bristles of middle 

 row, the lower approximate. Antennæ large (larger than in pectoralis), 

 brown or dark brown, arista short-pubescent. Palpi yellow, of ordinary 

 size and armature. Thorax black or more brownish black, dull or 

 nearly so, with brownish pubescence. Mesopleura bristly, with one 

 long bristle. Abdomen black, dull, with narrow, more or less distinct 

 pale hind margins to the segments; the very short hairs visible at the 



18* 



