36 Orthorrhapha brachycera. 



metatarsi about as long as, middle metatarsi a little shorter than the 

 four foUowing joints, hind metatarsi about as long as the second 

 joint. The three first joints on the middle tarsi very slightly dilated 

 at the end. Front and middle coxæ with white hairs on the anterior 

 side, hind coxæ with a pair of bristles on the outer side. The front 

 femora have white hairs below, but no bristles; for the rest the legs 

 are haired with short, dark hairs, the middle femora bare below, The 

 legs are almost bristleless, there is only a preapical bristle on the 

 hind femora, a bristle near the base on the anterior side of the 

 middle tibiæ, and small bristles on the hind tibiæ; besides there are 

 small, pale, bristly hairs below the middle femora; the apical bristles 

 on the tibiæ small; the hairs on the middle tibiæ are not erect. 

 Wings slightly yellowish; veins brownish black; the first posterior 

 cell very narrowly open; the lower branch of the discai fork faint, 

 not reaching the margin, the posterior cross-vein longer than the part 

 of the discai vein to the fork, but shorter or at most about as long 

 as the last part of the postical vein. Squamulæ yellowish white, 

 blackish just at the tip, with a whitish fringe. Halteres whitish. 



Female. Epistoma not broader than in the male. Front coxæ 

 with a row of bristles, and front femora with five (four to six) spines 

 beneath; the anterior tibiæ with some small bristles. 



Length 3 — 4,5 mm. 



This species is easily distinguished in both sexes by the con- 

 spicuous bands on abdomen, and from longulus besides by the grey 

 frons. 



Remarks: Zetterstedt says that the female of this species has six 

 spines below the front femora, and Loew (1. c. 1871) notes, that this 

 is generally the case, but that it may also have five or four; by far 

 the most of my specimens have five, only a couple of specimens have 

 six on one femur, but five on the other. About S. zonatulus Zett. 

 (II, 628, 4) the author says that it has five spines; according to the 

 above this distinction has thus no value; Zetterstedt notes two other 

 characters for zonatulus, viz. epistoma "sordide cano", and the ab- 

 dominal segments 2 — 5 "subcoerulescenti viridibus, nitidissimis, basi 

 nigrofasciatis" ; he concludes that he does not consider it a rubbed 

 variety of contristans, but I think it is only somewhat fatted specimens 

 of contristans as both the mentioned characters are just present in 

 such specimens. 



S. contristans is not properly common in Denmark, but has how- 

 ever been taken at many localities; Geel Skov, Tisvilde, Rørvig; on 

 Langeland at Lohals; on Funen at Odense and Veflinge; in Jutland 

 at Sminge near Silkeborg, Hald near Viborg and Frederikshavn, and 



