72 Orthorrhapha brachycera. 



Male. Vertex and frons bluish. Epistoma somewhat narrow, 

 greyish white. Palpi dark. Occiput green, a little pruinose; post- 

 ocular bristles black. Antennæ black, third joint triangular, a little 

 longer than broad. Thorax dark green, shining, very slightly brownish 

 pruinose. Scutellum finely yellow-haired at the margin; postscutellum 

 somewhat greyish pruinose. Pleura greenish, slightly greyish pruinose; 

 propleura with fine, yellowish or pale brownish hairs and a black 

 prothoracic bristle. Abdomen green or somewhat bronze-coloured, 

 downwards slightly whitish pruinose, with the hind margins of the 

 segments narrowly darkened. It is clothed with short, black hairs; 

 the hind margins of the segments have rather long bristles. 

 Venter greyish, slightly pale-haired. Hypopygium black, 

 greyish pruinose; the eighth segment with somewhat long, 

 black hairs; there are no distinct ventral lobes; the inner 

 lamellæ about half as long as the outer, curved down- 

 wards, the lateral dilated at the apex; the outer lamellæ 

 long, almost rectangular, white with a blackish margin; 

 at the posterior end above they are prolonged into two 

 long processes, with black, curved hairs, then follow some 

 smaller teeth at the ventral corner, with black, curved 

 hairs, the rest of the ventral margin has a single row of 

 shorter hairs. Legs black; coxæ greyish pruinose, on 

 the anterior side whitish pruinose; knees narrowly reddish, 

 the apical part of the front metatarsi and the three fol- 

 lowing joints ferruginous; the front tarsi are long and 

 thin, the last joint depressed, flat, somewhat dilated, tri- 

 angular, deep black; middle tarsi also long and thin, con- 

 D Falleni cj" siderably longer than the tibiæ. Front coxæ whitish- 

 front tarsus haired, with rather few bristles at the apex, and likewise 

 ^'"^"xSS ^ the middle coxæ; the legs otherwise with short, black 

 hairs, the posterior femora with somewhat long, fine, pale 

 hairs below at the base, and each with one preapical bristle; front 

 tibiæ with rows of bristles on the dorsal, posterior and postero-ventral 

 side; middle tibiæ with about five antero-dorsal and two postero- 

 dorsal bristles, and with one dorsal above and one ventral below the 

 middle; hind tibiæ with an antero- and postero-dorsal row, one dorsal 

 bristle above the middle and one ventral towards the apex, and 

 besides with a ventral row of fine bristles; hind metatarsi with rather 

 many bristles on the dorsal (three) and anterior side; the posterior 

 metatarsi distinctly spinulous beneath. Wings yellowish, somewhat 

 infuscated at the anterior margin; veins blackish brown; costa with 

 a small, black swelling; discai vein bent obtusely and not distinctly 



