Platypeza. 39 



as long as the rest of anal vein. Sqiiamulæ blackish brown, Halteres 

 black. 



Female. Somewhat similar. Frons broad, dark brownish grey, 

 with small hairs. Palpi yellowish, larger and more cliibbed than in 

 male. Postocular cilia long. Thorax greyish brown pruinose. Abdomen 

 as in the male, but not dull on basal part, the hairs short, only a 

 little longer at the sides, sixth segment with hindmarginal bristles. 

 Legs coloiired as in male, shorter-haired; hind tarsi more dilated 

 than in male, second joint short and quite short below, third about 

 as long as the two basal together and longer below, foiirth well 

 dilated; middle tarsi with just indication of a dilatation and with 

 second joint a little shorter than third. Wings less or not tinged. 

 Halteres brownish black. 



Length about 3 mm. 



P. fiircata does not seem to be uncommon in Denmark ; at Alinde- 

 lille and Bognæs (Kryger) and in Jutland at Hejls (the author); the 

 dates are in July. It has been bred from fungi on tree-stubs, taken 

 with larvæ on ^^/g, pupating in August and developing on ^/g, and 

 at another time taken as larva in June and developing in July (Kry- 

 ger). It is curious that the species was not known as Danish until 

 Mr. Kryger bred it in 1913 and 1917, and I took it in 1919. 



Geographical distribution: — Denmark, Sweden and England; 

 towards the north to southern Sweden. 



Remarks: As seen from the descriptions the species are rather 

 different in various respects; modesta and ruja are nearly related, 

 they have both a very broad frons in male with a few hairs above; 

 the hind tarsi with metatarsus longest, and about equal in both 

 sexes; two notopleural bristles; atra is isolated by the tufted frons 

 and the all hairy face; holetina and injumata are again nearly related, 

 they have no hairs on the cheeks, pluriserial dorsocentrals, hind 

 tarsi with the two basal joints short in both sexes, and the second 

 in the female very short below; only one apical spur on middle tibiæ 

 and middle tarsi in female somewhat dilated; jasciata has also pluri- 

 serial dorsocentrals, but is diflering by the hairs on second antennal 

 joint, numerous notopleurals, and another position of the medial 

 cross-vein; furcata fmally is rather isolated. I think that a study 

 based on rich material of all species would lead to creation of some 

 natural genera, such as Wahlgren has already created Platypezina 

 for connexa Bohem. 



