Aphiochaeta. 305 



has rather clear ^vings and the proportions of the costal divisions are 

 10 — 6—3 (in the Dutch specimen 12 — 6 — 4); for the rest my spec- 

 imen agrees well and especially so as regards the construction of the 

 hypopygium. 



The species is rare in Denmark, as said above I possess only one 

 specimen, a male, Holte ^Vs 1917 (Th. Mortensen). 



Geographical distribution: — Denmark (if correctly determined), 

 England and, according to the above, Holland. 



60. A. modesta n. sp. 



Male. Frons broader than high, greyish black, dullish; inner 

 bristle of lower row well below the outer and nearer to it than to the 

 upper supraantennal ; supraantennal bristles only a little imequal, 

 the lower a little smaller than the upper; the upper supraantennals at 

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

 row, the lower slightly more approximate. Antennæ black, of ordinary 

 size or smallish, arista distinctly pubescent. Palpi yellow, well devel- 

 oped, with ordinary bristles. Thorax black, somewhat shining, with 

 blackish pubescence. Mesopleura with uniform bristles. Abdomen 

 black, dull, somewhat tapering behind; it has short, sparse hairs, 

 almost only seen at the hind margins of the segments, a the hind 

 margin of sixth segment they are longer, especially downwards on 

 the sides. Hypopygium of medium size, with a number of distinct, 

 nearly bristly hairs down the sides; anal tube of medium length, 

 dirty yellowish. Legs dark brown; hind femora with dense, somewhat 

 long hairs below the basal half, they are longest and densest somewhat 

 after the base; bristles on hind tibiæ small and rather numerous. 

 Wings yellowish, veins brown; costa not reaching quite to the middle, 

 the divisions about as 10 — 5 — 4; costal cilia of ordinary length; fourth 

 vein only a little curved at the base, for the rest straight. Halteres 

 black. 



Female. Unknown. 



Length 1,5 mm. 



A. modesta is very rare, only one specimen, a male, is known, 

 taken at Frederikshavn in July 1881 (H. J. Hansen). 



Geographical distribution: — Only known from Denmark. 



61. A. proxima Lundbk. 



1920. Lundbk. Vidensk. Meddel, fra Dansk naturh. Foren. 71, 1, 1. — 

 1920. Schmitz, Jaarb. Natiiurh. Genootsch. Limburg, 1919, 143. 



20 



