Aphiochaeta. 285 



of the segments and at the sides, on sixth segment very slightly longer. 

 Hypopygium small, black or greyish black, with some small bristles 

 on the sides about as in conjormis, but sitiiated fiirther downwards; 

 ventral plate in accordancewith the hypopygium rather small, yellowish 

 with the end broadly rounded ; anal tube small and dark. Legs brown 

 to blackish brown, the front legs paler, yellow or brownish yellow; 

 the front metatarsus dilated, but not fully as wide as the end of tibiæ 

 and thus less dilated than in conformis, the other tarsal joints slightly 

 stout; the whole tarsus yellowish, last joint darkened; hind femora 

 with sparse longish hairs below the basal half ; bristles on hind tibiæ 

 small, about 11 in number; the hind tibiæ rather short, only as long 

 as the two first tarsal joints or not much longer. Wings clear and 

 colourless, thick veins brown, the others pale; costa 0,45 of the wing- 

 length, costal divisions about as 9 — 4 — 2; costal cilia long; fourth 

 vein evenly curved. Balteres black. 



Length 1,3 mm. 



Female. I possess a female which I think belongs here; it agrees 

 with the male, but the front tarsi are simple, at all events the meta- 

 tarsus not thickened; the wings are perhaps scarcely so clear as in 

 the male. 



This species is similar to conformis, but the yellow palpi, the less 

 dilated front metatarsi, the yellow colour of the front tarsi, and the 

 short hind tibiæ together with other characters distinguish it. 



Of this species I have five specimens, all males; Holte (Th. Mor- 

 tensen), Bogø south of Sealand and in Jutland at Hejls south of Kol- 

 ding (the author); the dates are ^^U—^U in 1917 to 1920. The possible 

 female was taken in Ermelund ^^U 1918 (the author). 



Geographical distribution: — Hitherto only known from Den- 

 mark. 



44. A. pilifemur Lundbk. 



1921. Vidensk. Meddel, fra Dansk naturh. Foren. 72, 133. 



Male. Frons broader.than high, black, dull; inner bristle of 

 lower row somewhat below the outer and nearer to it than to the 

 upper supraantennal ; supraantennal bristles unequal, the lower 

 somewhat smaller than the upper; the upper supraantennals approxi- 

 mate, a little nearer together than the inner bristles of middle row, 

 the lower a little more approximate. Antennæ black, of ordinary size 

 or smallish, arista distinctly pubescent. Palpi yellow, of ordinary size 



