300 Oi'thorrhapha brachycera. 



very small hair on each side. Pleura light grey pruinose; above the 

 middle coxæ a black, polished spot. Abdoinen black, shining, clothed 

 with short, whitish hairs. Venter black. Legs yellow or pale yellow, 

 the last tarsal joints brownish; anterior femora not much thickened, 

 and the middle femora only slightly thicker than the front femora. 

 The legs are clothed with yellowish hairs. Wings hyaline or slightly 

 yellowish, with pale veins. Halteres whitish yellow. 



Length about 1,5 mm. 



T. calceata is very rare in Denmark, I know only one specimen, 

 taken many years ago by Stæger, probably in Ordrup. 



Geographical distribution: — Europe down into Italy; towards 

 the north to noi'thern Sweden, and in Finland. 



10. T. articulata Macq. 



1827. Macq. Soc. Se. Lille, 1827, 98, 10 {PlaUj palpus). — 1838. 

 Meig. Syst. Beschr. VII, 98,53. — 1842. Zett. Dipt. Scand. 1. 284,15. — 

 1862. Schin. F. A. 1,91 {Platy palpus). — 1903. Kat. palaarkt. Dipt. Il, 280. 



Male. Frons and vertex grey; epistoma wiiite; palpi small, yel- 

 lowish. Occiput grey, with whitish bristles above, white hairs below, 

 Antennæ black, the basal joints yellow, the third joint short, con- 

 siderably shorter than the arista. Thorax greyish or brownish grey 

 pruinose; all bristles yellow. Scutellum with two yellow marginal 

 bristles and a small hair on each side. Pleura grey pruinose; above 

 the middle coxæ a black, polished spot. Abdomen black, shining, 

 with very short, pale hairs. Venter black. Legs dark yellow, tarsi 

 black annulated, the last joints may be quite black. The anterior 

 femora only slightly thickened, and the middle femora not much thicker 

 than the front femora ; the apical spine on the middle tibiæ small 

 and not pointed. The legs are yellowish haired. Wings hyaline; the 

 veins blackish or brown, a little paler at the base. Halteres whitish 

 yellow. 



Female. Similar to the male. 



Length about 2 mm. 



This species is distinguished from calceata by the distinctly black 

 annulated tarsi and the darker wing-veins; also the small spine on 

 the middle tibiæ is characteristic. 



T. articulata is not common in Denmark; Ermelund ; on Lange- 

 land at Lohals, and on Funen at Odense; my dates are "/t — 7*^- 



Geographical distribution: — Northern and middle Europe down 

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



