Aphiochaeta. 389 



to dark brown, the front legs paler, bristles on hind tibiæ very fine 

 and numeroiis. Wings small and short, scarcely as long as abdomen; 

 they are considerably brown, veins brown; costa very long, 0,66 of 

 the wing-length, costal divisions aboiit as 14 — 12 — 7 thus 1 about 

 equal to 2 and double 3; fork long, the angle somewhat large; costal 

 cilia relatively very long; fourth vein, w^hich on accoimt of the long 

 costa is very short, curved at the origin. Halteres w^hitish yellow. 



Length 1,1 — 1,5 mm; in a specimen of a length of 1,1 mm the 

 wing is 0,86 mm long and 0,37 mm broad. 



A. brevipennis is rare; at Lohals on Langeland ^Ve 19^0, Hejls 

 south of Kolding ^V? 1919 and Ry V? and 'V? 1918 (the aiithor), in 

 all four specimens, all females; they were taken under dead leaves of 

 beeches on the ground together with the preceding species, one 

 specimen was taken under a dead crow. 



Remarks: As I first described this species I had only the two 

 specimens from Ry; later on I have taken still two specimens, quite 

 agreeing with the former. It will be seen that they diller from longi- 

 costalis mainly by the smaller wings with the longer costa; now 

 already in longicostalis the wings seem to vary a little in size, and 

 I think it possible that the present species may be a variety of 

 longicostalis and thus, in accordance with what was said under that 

 species, perhaps an extreme variety of pulicaria. 



Geographical distribution: — Hitherto only known from Den- 

 mark. 



129. A. breviterga Lundbk. 

 1920. Lundbk. Vidensk. Meddel, fra Dansk naturh. Foren. 71, 33, 39. 



Male. LInknown (see under remarks). 



Female. Frons considerably broader than high, black; bristles 

 strong, inner bristle of lower row slightly below the outer and a little 

 nearer to it than to the upper supraantennal; supraantennal bristles 

 unequal, the lower somewhat weaker than the upper, down to less 

 than half the size; the upper supraantennals nearer together than the 

 inner bristles of middle row and the lower a little more approximate. 

 Antennæ dark brown, rather small, arista distinctly pubescent. Palpi 

 of full size, but somewhat narrow, yellow, with the bristles well devel- 

 oped. Thorax black, rarely brown (immature), with brownish pube- 

 scence. Mesopleura bare. Abdomen black or rarely somewhat brownish 

 (immature), dull, the short hairs very slightly longer at the hind 



