J36 Orthorrhapha brachycera. 



sal edge ; the end has some teeth with curved, black hairs, and dor- 

 sally to them a pair of curved hairs; the ventral margin is serrated, 

 with shorter hairs, and on the inside inwards curved hairs. Legs 

 yellow, front coxæ a httle Hghter pruinose anteriorly; posterior coxæ 

 grey, a Httle yellow just at the apex; anterior tarsi with the apex of 

 metatarsus and the four following joints black ; hind tibiæ a little 

 thickened; with a slight, but distinct swelling on the posterior side 

 near the base; the apex is a little brownish black or blackish; hind 

 tarsi black. The legs have short, black hairs, front coxæ with some 

 pale hairs outwards; hind femora with a little longer hairs above 

 towards the base, and with a fringe of short, pale hairs below ; posterior 

 femora with one preapical bristle; front tibiæ with bristles above, 

 and one to three on the postero-ventral side ; middle tibiæ with about 

 five antero-dorsal bristles (one of them more dorsal), two postero- 

 dorsal, and with one ventral bristle below the middle; hind tibiæ 

 with two dorsal rows of bristles, one ventral bristle towards the apex, 

 and a ventral row of small bristles; hind metatarsi with two or three 

 dorsal bristles, some anterior, and with small ventral bristles. Wings 

 somewhat brownish tinged; veins black, costa with a quite small 

 swelling; discai vein with a not small, but quite obtuse bend; axillary 

 lobe large, anal vein going downwards. Squamulæ pale yellow, with 

 a black fringe. Balteres yellow. 



Female. Epistoma broad, greyish yellow. Antennæ shorter than 

 in the male, third joint short, not as long as broad. Middle metatarsi 

 quite black; hind femora short-haired below, and hind tibiæ simple. 

 Wings without costal swelling; axillary lobe smaller, anal vein going 

 more forwards. 



Length 4—4,8 mm. 



I was somewhat in doubt with regard to the determination of 

 this species, but through the kindness of Dr. S. Bengtsson in Lund 

 I have examined the type of lineatocornis, and thus I am certain 

 with regard to the identity. Zetterstedt says of the epistoma "flavido" 

 and "flavescente" ; it is in the type slightly paler than in my speci- 

 mens, but it is however not pale, but yellow; otherwise there is not 

 the slightest doubt about the determination, the small costal swelling 

 and the specially formed hind tibiæ being very characteristic. I think 

 also that D. lineaticornis mentioned by Verrall (Entom. Month. Mag. 

 XV, 1904, 226), about which the author expresses some doubt, is 

 this species. The female had not hitherto been described, I have not 

 taken it in copula with the male, but I feel rather sure, that it be- 

 longs here, though it has the middle metatarsus quite black. — The 

 species is in the male distinguished from caligatus by the dark yellow 



