Platyphora. 437 



vein straight, obliterated at base, fifth somewhat sharply curved 

 near the base, for the rest straight; sixth vein doiibly curved, the apical 

 ciirve strong and somewhat sharp; seventh vein weaker, running 

 near the margin. Halteres black. 



Female. Similar; antennal arista more long-pubescent, almost 

 feathery; palpi less dilated outwards; fifth abdominal segment with 

 a semicircular chitinous plate, covering an opening. 



Length 0,7 to nearly 1,5 mm, the female generally the larger. 



M. galeata is not imcommon in Denmark; at Copenhagen (the 

 author), Gentofte (Kryger), Holte, Hillerød, Suserup Skov at Sorø 

 (Th, Mortensen), on Bogø soiith of Sealand, on Langeland at Lohals 

 (the author), on Ærø (Th. Mortensen) and in Jutland at Hejls south 

 of Kolding (the author); my dates are ^Vs— ^^/s in 1917 to 1920. I 

 have taken it on flowers of umbellifers and with the net in low herbage 

 in woods. 



Geographical distribution: — The species occurs in middle Europe 

 down into France and in Britain, it is not known north of Denmark. 



II. Platyphorinae. 



15. Platypliora Verrall. 



Species of small size, in the female without wings or halteres. 

 Male: Head somewhat as in Phorinae^ but low and broad, much broader 

 than high, excavated behind and lying close to thorax; frons broad, 

 at the vertical margin some small bristles, for the rest the frons 

 without bristles, only hairy. Eyes relatively small, bare; three ocelli 

 present. Antennæ normal, not small, third joint roundish, arista dorsal 

 or subapical, very fmely pubescent, almost bare. Oral aperture small, 

 mouth parts small; maxillary palpi with bristles. A row of not separ- 

 ated oral and genal bristles stretching from the mouth aperture to 

 the lower end of the eye. Thorax broad and flat, without dorsocentral 

 bristles. Scutellum short and broad, much broader than long, without 

 bristles. Mesopleura of a curious shape; they are somewhat wedge- 

 shaped, presenting a dorsal and a ventral surface and with a sharp., 

 horizontal lateral margin in the middle where the two surfaces meet; 

 the dorsal surface partakes, as it were, in the formation of the disc, 

 and the dorsopleural suture has partly vanished and hence the pro- 

 thoracic spiracles lie above; the upper part is hairy and has behind a 



