Dolichopodidae. 111 



head, third joint short, not longer than broad; they are yellow, the 

 third joint brownish, especially towards the apex and above, the basal 

 joints may appear slightly darkened above on account of the black 

 hairs. Thorax green varying to æneous, sometimes somewhat bluish, 



Fig. 29. Antenna of D. festivns d", from the inside. X 65. 



slightly pruinose, shining; scutellum finely yellow pubescent; post- 

 scutellum green, greyish pruinose. Pleura green, greyish pruinose; 

 propleura with fine, pale hairs and a black prothoracic bristle. Ab- 

 domen green, sometimes with coppery reflexes, and it may be some- 

 what bluish; it is whitish pruinose downwards and has narrow, some- 

 what darker hind margins to the segments; it is clothed with short, 

 black hairs, but down the sides the hairs are paler and become yel- 

 low; there are black hindmarginal bristles, which are long on the 

 flrst segment. Venter greenish grey, distinctly and not sparingly pale- 

 haired, on the third segment the hairs are longish and curved for- 

 wards. Hypopygium small, black or æneous black, greyish pruinose; 

 the eighth segment with somewhat long, black hairs; there are large, 

 rounded posterior ventral lobes with the dorsal apical corner some- 

 what pointed, and there are middle ventral lobes stretching far back- 

 wards; the inner lamellæ curved downwards, the median thin, the 

 lateral dilated and with a dilatation at the apex; the outer lamellæ 

 have the ventral margin rounded, the dorsal straight; they are whitish 

 with a narrow, blackish margin along the ventral, apical and outer 

 part of the dorsal edge; the end has some long teeth with curved 

 hairs, the most dorsally placed tooth is rather long, the others decrea- 

 sing in length; the ventral margin is serrated, with long hairs, and 

 on the inner side inwards curved hairs. Legs yellow, front coxæ 

 whitish pruinose anteriorly, middle coxæ grey, yellow on the apical 

 part, hind coxæ only with a grey stripe or spot on the outer side; 

 anterior tarsi with the apex of metatarsus and the four following 

 joints blackish; hind tibiæ blackish at the apex and hind tarsi black. 

 The legs have short, black hairs, front coxæ white-haired, only* in- 

 wards just at the base some black hairs; also middle coxæ white- 

 haired, except the black bristles; hind femora with longer hairs above 

 towards the base, and with a fringe of long, yellow hairs below in 



