102 



Orthorrhapha brachycera. 



A. velutinus and maurus, about which Osten Sacken says that they 

 have pulvilli, are also parasitic on Hymenoptera and Diptera (see 

 under Anthrax). It is therefore possible that these species should 

 be placed under Hemi'penthes , and that this genus may prove 

 natural, but I shall make no changes here but follow the Kat. palå- 

 arkt. Dipt, 



1. H. morio L. 



1761. Linn. Fn. Suec. 1784, p.p. {Musca). — 1842. Zett. Dipt. Scand. 

 I, 198, 4 et 1855. XII, 4584, 4 {Anthrax). - 1862. Schin. F. A. I, 49 

 {Anthrax). — 1903. Kat. palåarkt. Dipt. Il, 1 73. — 1820. Anthrax semiatra 

 Meig. Syst. Beschr. II, 157, 25, Tab. XVII, Fig. 14. 



Male. Black; frons and epistoma with short, erect, black hairs 

 and with sorne depressed, golden hairs; occiput greyish black with 

 sparse, depressed, golden hairs, at the hind margin with a dense 

 fringe of black hairs. Thorax dull, with erect, black hairs, at the front 

 end forming a fringe all round, the hairs of this fringe are yellow or 

 reddish yellow above, black below; on the disc there are moreover 

 some sparse, depressed, golden hairs. Pleura and sterna clothed with 

 longish black hairs. Abdomen with long, black and yellow inter- 

 mingled hairs; at the lateral margins of the tirst segments the hairs 

 are yellow, on the rest of the lateral margins black and forming a 

 fringe; abdomen moreover clothed with short, depressed, scaly hairs 

 which are black with some golden intermingled. Venter with long, 

 black and depressed, golden hairs. The golden, scaly hairs may sorne- 

 times be more reddish copper-coloured, both on thorax and abdomen. 

 Legs black, tibiæ more or less dark brownish; all the hairs and 

 bristles black, only on the tibiæ, especially on the hind tibiæ, the 

 scaly hairs may be golden to a greater or less extent. Wings black 

 at the base, hyaline at the apex, the cross-veins with a somewhat 

 lighter seam ; the border of the black part goes zigzag obliquely 



I 



Fitc. 36. Winar of H. morio. 



over the wing from the apex of the subcostal vein to the apex of 

 the anal cell, thus when the wings in rest are in their natural posi- 

 tion the border forms a straight line across both wings; costa with 



