Empididae. 307 



discai vein is more curved in the present species than in cursitans; 

 finally the tarsi are quite yellow. 



T. major is soniewiiat common in Denmark; Ordrup Mose, Dyre- 

 haven, Ørhohii, Nyraad at Vordingborg; on Funen at Odense and 

 Veflinge; in Jutland in Greisdalen at Vejle, at Silkeborg and at 

 Frederikshavn; my dates are '/(; to August. It occurs especially on 

 bushes in the outskirts of woods. 



Geographical distribution: — Northern and middle Europe down 

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

 Besides it goes down into Spain, if the form ^innor Strobl is in reality 

 the present species. 



17. T. flavicornis Meig. 



1822. Meig. Syst. Beschr. III, 83, 37. — 1842. Zett. Dipt. Scand. I, 

 278,8. — 1862. Schin. F. A. I, 88. (Platypalpus). — 1903. Kat. palåarkt. 

 Dipt. II, 283. 



Male. Frons and vertex yellow or greyish yellow; epistoma 

 white ; palpi large, whitish. Occiput yellow or greyish yellow, with 

 yellow bristles above, white hairs below. Antennæ yellow, arista 

 blackish brown, the third joint short, much shorter than the arista. 

 Thorax yellowish or bright yellow pruinose; there are two distinct 

 notopleural bristles; all bristles yellow. Scutellum with two yellow 

 marginal bristles, and a small hair on each side. Pleura grey pruinose, 

 upwards a httle yellowish; above the middle coxæ a black, polished 

 spot. Abdomen black, somewhat (not much) shining; each segment 

 with a large, triangular, grey spot at the sides, almost meeting in the 

 middle; at the sides the spots occupy the whole length of the seg- 

 ment. Abdomen is clothed with short, yellow hairs. Venter black, 

 sometimes more or less pale. The exterior genitalia not large, directed 

 somewhat upwards. Legs yellow, the tarsi distinctly black annulated. 

 The anterior femora distinctly thickened, the two pairs equally thick. 

 The legs are yellow haired. Wings hyaline, very slightly yellowish. 

 Veins yellow, the cubital and discai vein a httle converging. Balteres 

 yellowish white. 



Female. Similar to the male; abdomen pointed. 



Length 2,3 — 2,8 mm. 



This beautiful little species is easily distinguished by the light 

 yellow colour which is also extended to the head, and by the large 

 bands on abdomen ; also the equally thick anterior femora are charac- 

 teristic. 



T. flavicornis is common in Denmark; Copenhagen in a garden, 



.20* 



