518 Tachinidae. 



mediate triangle red in some views; frontal stripe velvet black. Éyes 

 pale-hairy. Orbits with black hairs, produced on the upper part of 

 cheeks; Jowls with black hairs. Occipiit grey, with whitish hairs 

 and a row of black hairs behind postocular 

 bristles. Antennæ black with the basal joints 

 obsciirely reddish; arista quite short, thickened 

 to near end, short-pubescent. Palpi yellowish. 

 Thorax black, grey pruinose, with three dark 

 stripes, the median abbreviated behind; scu- 

 tellum red on apical part. Thorax black-haired; 

 scutellum with a pair of discai bristles. Ab- 

 domen greyish yellow pruinose, somewhat shift- 

 ing to dark according to view; it is black- 

 haired; on second segment a pair of sometimes 

 antenna small margmal bristles, on third a pair ol discai 



and marginal, and on fourth a pair of discai and a 

 row of marginal bristles; fifth segment with bristles on the greater part. 

 Legs black, knees reddish; bristles relatively long. Wings a little tinged 

 and yellowish at base; veins brown; apical cross- vein straight. Sqiia- 

 mulæ yellowish white or yellowish. Halteres brownish. 

 Length 6 mm. 



R. breviseta is rare in Denmark, I know only two specimens, 

 both females, taken on Lolland (Schlick). 



Geographical distribution: — Europe down into Austria; towards 

 the north to northern Sweden and Lapland. 



123. Pseudopacliystyluin Mik. 



Species of medium size and black colour with slight pale prui- 

 nosity. Head not broader than thorax, somewhat long, with a slightly 

 retreating epistoma and thus nearly square in profile; it is rather 

 convex behind and puiTed out in the whole circumference; it is slightly 

 higher than long. Frons broad, broadest in female, rather protruding 

 and only slightly declining. Cheeks very broad and jowls about 

 two thirds of the height of the eye. In both sexes ocellar and inner 

 but no outer vertical bristles, and in female one orbital bristle. Rela- 

 tively large postocellar and occipital bristles. Occiput with all black 

 hairs; postocular bristles rather strong. Frontal bristles only slightly 

 descending, not reaching end of second antennal joint, the upper- 

 most directed outwards (in female). Cheeks strongly haired. Vibrissæ 



J 



