Vibrissina. 556 



marginal bristles on each side, the apical wanting or represented by 

 very small hairs. Three sternopleural bristles (sordidisquama). Ptero- 

 pleura above with small hairs and a small bristle. Abdomen relatively 

 narrow and elongated, excavation on second segment not by far 

 reaching hind margin {sordidisquama); there are discai and marginal 

 bristles, second segment with a pair of marginal. Legs with the antero- 

 dorsal bristles on hind tibiæ quite imequal; claws and pulvilli in male 

 a little elongated. Wings with first posterior cell narrowly open or 

 just closed and ending rather near apex of wing; discai angle obtuse 

 and rounded; a small costal spine. 



Our Danish species, sordidisquama is in the catalogue placed in 

 Ceromasia but seems to be more related to Vibrissina, where also. 

 Kramer piaces it. With this species included four Eiu'opean species 

 are recorded. 



1. V. sordidisquama Zett. 



1844. Zett. Dipt. Scand. III, 1038, 28 et 1855. XII, 4691, 28 {Tachina). 

 — 1894. B. B. Denkschr. Akad. Wiss. Wien, LXI, 622 (Ceromasia). — 1907. 

 Kat. palåarkt. Dipt. III, 287 (Ceromasia). — 1924. Stein, Arch. f. Natur- 

 gesch. 90, 6, 97, 9 (Ceromasia). — C. Wulpii B. B. 1891. 1. c. LVIII, 330. 



Male. Frons above about as broad as the eye. Orbits greyish; 

 cheeks silvery, dark in some views; jowls whitish grey; frontal stripe 

 velvet black, seen from in front grey except along the middle. Orbits 

 and jowls with black hairs. Occiput grey with pale hairs, very sparse 

 above, and with rows of black hairs behind postocular bristles. An- 

 tennæ black, third joint somewhat broad; arista long, thickened in 

 less than basal half. Palpi thin, yellow, darker towards base. Thorax 

 black, somewhat shining, thinly greyish priiinose, most at the humeri ; 

 it has four black stripes, the median abbreviated behind, the lateral 

 broad; scutellum black. Thorax black-haired. Abdomen black and 

 somewhat shining, the three last segments whitish pruinose, shifting 

 with dark tessellations according to view, the hind margins and a 

 slightly pronounced middle stripe black. Abdomen black-haired, 

 second segment with a pair of marginal bristles, third with a pair of 

 discai and marginal and fourth with a pair of discai and a row of 

 marginal; fifth segment has a row of marginal and some discai bristles. 

 Legs black. Wings yellow tinged; veins yellowish brown; posterior 

 cross-vein not near angle. Squamulæ and balteres yellow. 



Female. Similar; frons a little broader, broader than the eye. 



Length 6 to fully 7 mm. 



