28 Orthorrhapha brachycera. 



just at the apex are long and form a tuft, the hairs of which are 

 curled at the apex. The posterior femora are bare beneath, they 

 have small preapical bristles, and the posterior tibiæ short bristles on 

 the various sides. Wings very broad, especially towards the apex, 

 slightly yellowish; veins brown; first posterior cell narrowly open ; 

 the lower branch of the discai fork going straight forwards, forming 



Fig. o. Wing of S. platypterus <S. 



no angle with the stem, stopping a little before the margin; the 

 postical vein a little curved at the apex; the posterior cross-vein 

 about as long as or a little shorter than the part of the discai vein 

 to the fork, and shorter than the last part of the postical vein. 

 Squamulæ yellow, blackish just at the tip, vi^ith a yellov^ fringe. 

 Halteres yellow^. 



Female. Head as broad as high. Epistoma broader than in the 

 male, but however rather narrow. Palpi with a somewhat strong 

 bristle. Front coxæ with stronger bristles than in the male, and front 

 femora with five strong, spine-like bristles below; middle metatarsi 

 simple; hind metatarsi about as long as the two following joints. 

 The transverse bands on abdomen generally less pronounced or al- 

 most wanting, and the long hairs on the first segment black. Wings 

 of the usual shape. 



Length 3,5 — 6 mm ; the male is longer than the female. 



S. platyjiterus is common in Denmark ; Copenhagen in gardens, 

 Charlottenlund, Ermelund, Dyrehaven, Bøllemosen, Lyngby Mose, Ør- 

 holm, Hillerød, Tisvilde, Nordskoven at Jægerspris, Svenstrup between 

 Roskilde and Ringsted, Sorø; on Langeland at Lohals; on Funen at 

 Odense, Hoffmansgave, Veflinge and Strib; in Jutland in Vejle Nørre- 

 skov, at Nebsager near Horsens, Horsens, Ry, Silkeborg, Hald near 

 Viborg and Frederikshavn; finally on Bornholm at Hammeren, Rø, 

 Allinge and Almindingen. My dates are ^^/e— "/s. It occurs in low 

 herbage and on bushes in humid piaces and near water, and it is 



