132 Orthorrhapha brachycera. 



æneous, sometimes with a more golden middle stripe; it is a little 

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

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

 propleura with fine, pale hairs and a black protlioracic bristle. Abdomen 



Fig. 41. Antenna of I), nofabilis d", from the inside. X 65. 



green, sometimes somewhat golden or more coppery, finely whitish 

 pruinose downwards, with indistinct, dark hind margins to the seg- 

 ments, or these wanting; it is clothed with short, black hairs, and 

 has longish hindmarginal bristles, a little longer on the first segment. 

 Venter greyish, slightly pale-haired. Hypopygium black, slightly greenish, 

 greyish pruinose; eighth segment with black hairs; there are slightly 

 projecting posterior ventral lobes, ending with a little upwards turned 

 point; the middle lobes somewhat projecting and pointed; the inner 

 lamellæ curved downwards, the median thin and pointed, the lateral 

 dilated and with a dilated apex; the outer lamellæ are small, some- 

 what ovate, yellowish white; there is a blackish margin along the 

 ventral, apical and outer half of the dorsal edge, it is somewhat 

 broad at the apical edge; the end has some teeth with curved, black 

 hairs, and dorsally to them a pair of hairs ; the slightly serrated ven- 

 tral margin has curved hairs, and on the inside inwards curved hairs. 

 Legs yellow, front coxæ somewhat whitish pruinose anteriorly ; posterior 

 coxæ grey with the apex yellow; anterior tarsi with the apex of 

 metatarsus and the following joints brown or blackish, front tarsi 

 generally palest, or only darkened towards the apex; hind tibiæ 

 slightly thickened towards the end, with about the apical third black, 

 hind tarsi black. The legs have short, black hairs, front coxæ a 

 little pale-haired outwards and above; posterior femora with one 

 preapical bristle; front tibiæ with bristles above, one on the posterior 

 side and generally two on the postero-ventral side, and with a long, 

 thin hair at the tip on the ventral side; middle tibiæ with three to 

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

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

 dorsal rows of bristles, one ventral bristle towards the apex, and a 

 row of small ventral bristles; hind metatarsi with about two dorsal 



