26 Orthorrhapha brachycera. 



æneous, slightly shining; the hairs shorter than in the male, and less 

 dark to pale brownish. Hind tarsi very slightly dilated. Wings about 

 as in the male. H alteres yellowish. 



Length 3 — 3,7 mm. 



This species, which is intermediate between spuria and nigra, 

 is distinguished from spuria by the longer and longer-haired legs 

 and the, to be sure slightly but always visibly, thickened joints on the 

 hind tarsi; in the female however this character is of little value; for 

 the rest there are small differences in the pubescence of the legs, the 

 colour of thorax etc; in the female it is distinguished by the yellow 

 balteres. As in the preceding species immature specimens occur with 

 brownish legs and less dark wings. — Zetterstedt says about speci- 

 mens sent to him from Stæger under the name of nigra, that he 

 thinks they do not belong to this species; most specimens in our 

 collection determined by Stæger as nigra were just intermedia. I 

 think the species is generally confused partly with spuria partly with 

 nigra. 



B. intermedia is not common and generally not taken in great 

 numbers; Ordrup Mose, Ermelund (Stæger, the author). Dyrehaven, 

 Geel Skov, Tisvilde, and in Jutland in Vejle Nørreskov and Højenbæk 

 Dal (the author). My dates are ^Vs — ^'^h. It occurs in the same 

 piaces as spuria. When this species is observed in the free, sitting 

 on the leaves, the wings, which then lie one over the other, appear 

 quite and lively red, and the species is very beautiful; the same is, 

 but to a less degree, the case with spuria. 



Geographical distribution : — The species is hitherto only known 

 from Denmark. 



4. B. nigra Meig. 



1824. Meig. Syst. Beschr. IV, 3, 2. {Cyrtoma). — 1842. Zett. Dipt. 

 Scand. I, 330, 2, et 1859. XIII, 4997, 2. {Cyrtoma). - 1862. Schin. F. A. 

 I, 76. {Cyrtoma). — 1903. Kat. palaarkt. Dipt. II, 221. 



Male. Epistoma blackish; occiput dark grey with black hairs. 

 Antennæ black or brownish black. Thorax æneous, somewhat shining, 

 with indications of two stripes. The bristles present as usual, black; 

 the hinder dorsocentral bristles long. Scutellum greyish æneous, with 

 black marginal bristles. Pleura grey. Abdomen slender, greyish or 

 dark æneous, somewhat shining; the long hairs not dense, more or 

 less pale brown to pale yellowish; they are short along the middle. 

 Legs long and slender, still longer than in intermedia, more or less 

 dark brown to blackish brown. The hind tibiæ relatively strongly 

 thickened towards the tip, the two first joints of the hind tarsi quite 



