96 Orthorrhapha brachyoeva. 



011 the inner side inwards directed hairs. Legs long, pale yellow; 

 front coxæ whitish anteriorly, posterior coxæ grey, just at apex yel- 

 low ; middle tarsi with the four last joints black, hind tibiæ a little black 

 at the apex, especially on the posterior side, and hind tarsi black; front 

 tarsi long and thin, nearly tvvice as long as the tibiæ, the three middle 

 joints long, the third and fourth about equal in length, the last com- 

 pressed, dilated, of ovate shape, it is black, white at the base, haired 

 at the margin. The legs have short, black hairs, the front coxæ white- 

 haired with a few black hairs, and the hind femora with inconspicuous 

 pale hairs beneath; posterior femora with one preapical bristle; front 

 tibiæ with bristles above and on the posterior side, middle tibiæ with 

 about five to six antero-dorsal (one of them dorsal), two to three 

 postero-dorsal, and two (sometimes one) ventral bristles below the 

 middle; hind tibiæ with two dorsal rows, and with one ventral bristle 



Fig. 23. Wing of D. discifer. 



towards the apex, besides with a ventral row of fine, small bristles; 

 hind metatarsi with about four dorsal bristles, some anterior, and 

 small bristles below, middle metatarsi with some small bristles below 

 at the sides. Wings somewhat narrow, yellowish or slightly brownish 

 tinged, most towards the anterior margin ; veins black, costa with a 

 very small and inconspicuous swelling; discai vein with a small bend 

 which is almost not double, and hence the vein is convergent towards 

 the cubital vein; axillary lobe large, anal vein short, only reaching 

 half way towards the margin. Squamulæ yellow, with a black fringe. 

 Halteres pale yellow. 



Female. Epistoma broad, greyish. Antennæ shorter than in the 

 male, third joint short triangular. Front tarsi simple, not long; the 

 middle tibiæ may have seven antero-dorsal bristles, and there are al- 

 ways two, or sometimes three, ventral bristles. Wings a little broader 

 than in the male, the anal vein a little longer. 



Length o — 5,7 mm. 



Remarks: Kowarz (Wien. Ent. Zeitg. III, 1884, 55) distinguishes 

 in his table both sexes as having more than one ventral bristle on 



