Dolichopodidae. 311 



long, brownish or yellow. Legs with the coxæ greenish, greyish 

 pruinose, the apex yellow, or on the front coxæ brownish; femora 

 green with the apex yellow; tibiæ and tarsi brown or dark brown, 



Fig. 98. Antenna of T. hellus d- X Ho. 



the former a little paler at the base. The legs have short, pale or 

 brownish hairs, the anterior coxæ yellow, bristly hairs; hind coxæ 

 with two yellow bristles on the outside; femora with short hairs, 

 middle femora with a very small preapical bristle, hind femora with 

 somewhat bristly hairs on the anterior side, especially at the apex; 

 tibiæ without bristles, middle tibiæ with a somewhat strong apical 

 spine on the inside, hind tibiæ with a smaller, and with a very short, 

 not always distinct ciliation on the antero-ventral side, continued out 



Fig. 99. Wing of T. bellus d". 



on the first tarsal joints; hind metatarsus considerably siiorter than 

 the second joint. Wings almost hyaline; veins brownish black. 

 Squamulæ yellow, with a yellow fringe. Halteres yellow. 



Female. Epistoma somewhat broader than in the male; for the 

 rest the two sexes quite similar, except for the genital differences. 



Length 1,7— 2 mm. 



T. hellus is rare in Denmark, only nine specimens have been 

 taken; Amager (Stæger), and in Jutland at Horsens and Frederiks- 

 havn (H. J. Hansen). It is a beautiful, but very small species, and 

 perhaps it has been overlooked on account of its very small size. It 

 was first described in 1869 by Loew, but it was found in Stæger's 

 collection from earlier time, though erroneously determined. 



