Empididae. 319 



above tlie middle coxæ a large, black, polished spot, Abdomen black, 

 shinlng, with a little longish, yellow hairs. Venter black, soinetimes 

 paler towards the base. Legs yellow, the last four tarsal joints 

 generally brownish or blackish brown, The front femora very slightly, 

 the middle femora considerably thickened; the middle tibiæ about 

 two thirds of the femora in length, the apical spine small and truncate. 

 The legs are yellowish haired. Wings hyaline or very slightly yel- 

 lowish, Veins brown or blackish. Balteres yellowish white or white. 



Female. Similar to the male; abdomen pointed. 



Length 2,5 — 3,3 mm. 



This species cannot be confused with any of the three preceding 

 species, as it is distinguished by the uniform pubescence on the 

 thoracic disc; in this respect, and also otherwise, it resembles macula^ 

 but this species has a much shorter third antennal joint, and yellow 

 thoracic and scutellar bristles. 



T.pallipes is somewhat rare in Denmark; Copenhagen in gardens 

 (the author). Lersøen (Stæger); my dates are from July to ^Ys- 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to northern Sweden, and in Finland. 



30, T. nigritarsis Fall, 



1815. Fall. Dipt. Suec. Empid, 34,1—2. — 1822. Meig. Syst. Beschr. 

 III, 74, 13. — 1842. Zett. Dipt, Scand. I, 307, 43. — 1862. Schin. F. A. 

 I, 91 [Platypalpus). — 1903. Kat. palåarkt. Dipt. II, 286. 



Male. Frons and vertex broad, black, the former a little greyish 

 pruinose, the latter shining; epistoma narrow, black; palpi small, 

 whitish. Occiput greyish black, with two distinct, black bristles above 

 and white hairs below, Antennæ black, long, about as long as the 

 head, the third joint elongated, considerably longer than the short 

 arista. Thorax black, shining, with a well defmed, greyish pruinose 

 margin; the uniserial dorsocentral and biserial acrostichal hairs short, 

 black; there is one longer dorsocentral bristle behind, and there are 

 two notopleural bristles, all black. Scutellum greyish pruinose, with 

 two black marginal bristles. Pleura dark greyish pruinose, sterno- 

 pleura shining. Abdomen black, shining, with a little longish, yel- 

 lowish hairs. Venter black. Legs yellow; the posterior coxæ black, 

 the front coxæ a little blackish at the base; the apical part of the 

 hind femora black, the middle femora generally blackish or brownish 

 above in the apical part; the front tibiæ almost quite black, the hind 

 tibiæ generally blackish at the base; the four last tarsal joints, and 

 generally also the apex of the metatarsus black. The front femora 

 somewhat, the middle femora more thickened; the apical spine on 



