502 Tachinidae. 



hairs. Antennæ black, second joint often more or less pale, especially 

 at apex; second joint as long as third, the latter rectangular, rounded 

 at apex; arista with second joint a little elongated, third distinctly 

 thickened at base. Palpi yellow, with bristles below apical half. 

 Thorax bluish black, shining, groyish pruinose with three stripes, the 

 median the broadest; scutelliim dark. Thorax black-haired ; three 

 postsutural dorsocentrals and generally only præscutellar acrostichals 

 or also a weak pair of præsutiiral. Scutellum with four marginal 

 bristles on each side, the median pair long, diverging, no apical 

 bristles. Abdomen bluish black, shining, often slightly and indistinctly 

 reddish at the sides; third to fifth segment whitish pruinose except 

 hind margin, shifting with dark irregular tessellations according to 

 view. Abdomen black-haired, third segment with generally two 

 pairs of discai and a pair of marginal bristles, fourth with two pairs 

 of discai or still more and a row of marginal bristles. Fifth sternite 

 shining, cleft beyond middle. Genitalia somewhat large; præhypo- 

 pygial segment black, shining, with long, strong hairs. Hypopygium 

 with bristly hairs. Upper forceps not broad above, canaliculated 

 on basal half with the margins raised, thinner in apical half and obtuse 

 at end; arms of lower forceps broad at base, with a small indistinct 

 scale-like piece, slightly triangularly attenuating outwards, obtuse 

 at end and here slightly bifid; they are hairy on outer surface and a 

 little longer than upper forceps. Legs black, with strong bristles; 

 claws and pulvilli strongly elongated. Wings brownish tinged, espe- 

 cially at base and anterior margin; veins blackish brown, medial 

 cross- vein a little infuscated; discai angle with a short real veinlet. 

 Squamulæ white. H alteres yellowish brown. 



Female. Similar; frons broader than the eye; antennæ always 

 with the two basal joints red, and also often third more or less reddish; 

 arista thickened longer outwards; front tarsi wdth the three last 

 joints a little dilated. 



Length 9,5 to fully 11 mm. 



E. nemorum is rare in Denmark; we possess only two specimens, 

 both females, taken at Ordrup many years ago (Stæger); the above 

 description of the male is drawn from specimens kindly sent me from 

 Dr. Villeneuve. One of my specimens is that mentioned by Zetter- 

 stedt 1. c. 



Geographical distribution: — Europe down into France; not 

 Jknown north of Denmark. 



