266 Tachinidae. 



three intraalar bristles. The apical scutellar bristles converging. Ab- 

 domen blackish, grey pruinose, shifting with irregular dark brownish 

 spots according to view; indistinct narrow hind margins black. Ab- 

 domen black-haired, with discai and marginal bristles, second segment 

 without bristles, third with some discai and a pair of marginal, fourth 

 likewise but with a row of marginal. Fifth sternite cleft to base. Legs 

 black, knees a little reddish. Wings slightly tinged; veins brownish. 

 Squamulæ whitish, with yellow margin. H alteres brownish, 



Female. Similar; frons broad, much broader than the eye. 



Length 10 — 11 mm. 



S. petiolata is very rare in Denmark, only four specimens, a male 

 and three females, are known, taken in Jutland in Nørholm Skov 

 at Varde (Kryger), on Seis Hede (Esben-Petersen) and at Hald 

 (H. J. Hansen); the dates are ^^7 — ^U- 



Geographical distribution: — Europe; not known from Scandi- 

 navia, but occurring in eastern Europe and Finland. 



51. Csthepia R. D. 



Species of medium size and greyish colour. Head as broad as 

 thorax, slightly convex behind, somewhat puffed out below, liigher 

 than long. Frons narrow in male, broad in female, somewhat pro- 

 truding. Jowls half as broad as the eye is high. In both sexes ocellar 

 and inner vertical bristles, in female further outer vertical and two 

 orbital bristles. Postocellar and occipital bristles small. Behind 

 postocular bristles black hairs. Frontal bristles not reaching the 

 insertion of antennæ, stopping above before vertex, all crossing in 

 male, in female an outwards directed bristle above. Cheeks bare. 

 Vibrissal ridges not sharp, converging below; vibrissæ a little ascend- 

 ing; a large vibrissa present, placed a little above lower margin of 

 epistoma. Epistoma almost not retreating and not reflected below, 

 somewhat carinate. Proboscis and oral cone of medium length. Palpi 

 a little dilated apically. Antennæ inserted below middle of the eye, 

 short, third joint at most twice as long as second; arista plumose. 

 Thorax a little rectangular; four postsutural dorsocentrals, and two 

 or three præ- and likewise postsutural acrostichals (in the Danish 

 species). Scutellum with three marginal bristles on each side. Three 

 sternopleural bristles. Pteropleura with a bundle of hairs and a bristle 

 above. Abdomen elongated conical; excavation on second segment 



