Empididae. 295 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to northern Scandinavia, but rare; 

 and in Finland. 



5. T. interjecta n, sp. 



Of this species I have only the female, Frons and vertex dark 

 grey; epistoma grey; palpi small, whitish. Occiput grey, with black 

 hairs above, whitish hairs below. Antennæ black, the third joint 

 much elongated, longer than the arista. Thorax dark grey, somewhat 

 slightly pruinose; the bristles dark yellow; a humeral bristle and two, 

 somewhat strong notopleural bristles present. Scutellum has two 

 long, dark yellow marginal bristles and a weaker hair on each side. 

 Pleura greyish pruinose; above the middle coxæ a black, polished 

 spot. Abdomen black, shining, without bands; it is clothed with 

 short, pale hairs, a little longer at the sides. Venter black. Legs, 

 including the coxæ, somewhat dark yellow; tarsi with the last four 

 joints and the tip of nietatarsus blackish brown. The anterior 

 femora slightly thickened; the spine at the apex of the middle tibiæ 

 exceedingly small, almost wanting. The legs yellowish haired; the 

 bristles on the anterior side of the middle femora present in the 

 whole length. Wings hyaline. Veins dark brown to black. Balteres 

 pale yellow. 



Length 2 mm. 



This species resembles T. cothurnata very much, but it is at once 

 distinguished by the long third joint of the antennæ, and the minute 

 spine on the middle tibiæ. In the latter character it resembles T. 

 cryptospina Frey (Acta Soc. pro Faun. et Flor. Fenn. 31, No. 9, 8), 

 and I should not have hesitated in determining it as this species, 

 were it not for the third antennal joint, which in cryptospina is de- 

 scribed as short „fast riindlich" ; besides cryptospina has weak, yel- 

 lowish white thoracic bristles and black annulated tarsi. 



T. interjecta must be rare in Denmark, I have taken only one 

 specimen, a female, at Tisvilde on Vt 1910, It was taken with the 

 net on low herbage in the outskirt of a wood. 



Geographical distribution: — The species is only known from 

 Denmark. 



6. T. fulvipes Meig. 



1822. Meig. Sysl. Beschr. III, 78, 25. et 1830. VI, 342. - 1862. 

 Schin. F. A. I, 89 {Platjrpalpus). — 1903. Kat. palåarkt. Dipt. II, 284. — 

 Tachydromia fascipes: 1893. Strobl, Mitth. Ver. Steierm. 1892; 120. 



Male. Frons and vertex grey; epistoma white; palpi small, 

 whitish yellow haired. Occiput grey, with yellow bristles above. 



