40 Orthorrhapha brachycera. 



postalar all black; about and behind the humeri there are yellow 

 hairs. Scutellimi grey with (about six) black marginal bristles. Pleura 

 grey, metapleura with yellow hairs. Abdomen dark grey, slightly 

 shining; narrow, pale grey hind margins to the segments are generally 



seen ; venter lighter grey. Abdomen is clothed 

 with erect, yellow hairs; venter similarly haired. 

 Exterior genitalia somewhat large, the eighth 

 ventral segment drawn out into two triangular 

 lamellæ, long yellow haired; on the dorsal 

 side a pair of similar, but more bidden lamellæ; 

 the lower lateral lamellæ somewhat shovel- 

 shaped, with an obliquely cut, somewhat den- 

 tated hind margin; they are black, somewhat 

 Fiff. 6. Bh. nigripes shining, with yellow hairs below ; the upper 

 male genitalia. lateral lamellæ are of a complicated shape, 



each sending a somewhat blade-like, at the 

 upper margin dark haired process forwards in over abdomen; at the 

 base of this process there is a small, triangular outshoot above, and 

 backwards each process has an almost rectangularly bent, somewhat 

 styliform process. Penis is a thin, black thread curved several times, 

 slightly thickened in the basal part, and here surrounded by a sheath. 

 Legs somewhat robust, black; coxæ greyish pruinose; the hind femora 

 somew^hat long, with two thickenings on the posterior side just before 

 and behind the middle, and slightly incurved between them ; front and 

 hind metatarsi very slightly thickened. The front femora are short- 

 haired ; the middle femora have a ventral row of short, strong bristles, 

 and a row of longer bristles more posteriorly; the hind femora have 

 a ventral row of longer bristles; the anterior tibiæ are short-haired, 

 specially densely on the ventral side and with some longer bristles 

 on the dorsal side; the hind tibiæ are similarly haired, but both the 

 ventral hairs and the dorsal bristles are longer, and the latter are 

 densely, somewhat tuft-like placed at the end of the tibiæ ; the anterior 

 tarsi are short-haired, the hind tarsi have bristle-like hairs on the 

 dorsal side and are slightly spinulous on the ventral side. The 

 stronger hairs and bristles are black or brownish, the finer partly 

 pale, but besides the legs have a common, short, pale brownish 

 pubescence. On the nodose posterior side of the hind femora there 

 is a very short and dense, pale brown pubescence, and a similar, 

 pale pubescence is found on the ventral side of the posterior femora. 

 Wings slightly fumigated; veins blackish brown, the anal vein very 

 pale, not reaching the margin. Stigma narrow, blackish. Halteres 

 white. 



