116 Orthorrhapha brachycera. 



Venter greyish, pale-haired. Hypopygium somewhat small, slightly 

 æneous black, greyish pruinose; eighth segment with black hairs; 

 there are a little projecting posterlor ventral lobes, with the ventral 

 margin somewhat rounded, and with a truncate point, which is turned 

 upwards; they have a hair at the ventral margin; the inner lamellæ 

 curved downwards, the median thin, styliform, the lateral dilated, 

 with a small dilatation at the apex, separated off by an excision; the 

 outer lamellæ almost semicircular, with the dorsal margin straight, 

 and somewhat petiolated ; they are whitish with a narrow blackish 

 margin along the ventral, apical and outer half of the dorsal edge; 

 at the end there are about four long teeth with black, curved hairs, 

 the tooth on the dorsal corner long, and dorsally to it two curved 

 hairs; the ventral margin serrated, with long, curved hairs, and in- 

 wards curved hairs on the inside. Legs pale yellow; front coxæ 

 white pruinose anteriorly, middle coxæ grey with the apex broadly 

 yellow, and also the front side partly yellow, hind coxæ yellow with 

 only a more or less distinct grey spot at the base on the outer side; 

 anterior tarsi with the very apex of metatarsus and the four following 

 joints brown or blackish; hind tibiæ very slightly darkened at the 

 apex, hind tarsi black, sometimes a little reddish at the very base. 

 The legs have short, black hairs; front coxæ white-haired ; the femora 

 give the impression of being bare below and on the larger part of 

 the posterior side, but they are in reality pale-haired; hind femora 

 with a long, whitish fringe below in about the outer two thirds; 

 posterior femora with one preapical bristle; front tibiæ with bristles 

 above, and one or two on the postero-ventral side; middle tibiæ with 

 about four antero-dorsal bristles, two postero-dorsal, two (sometimes 

 three) antero-ventral and one ventral bristle; hind tibiæ with two 

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

 ventral row of small, distantly placed bristles ; middle metatarsi with 

 one bristle above, hind metatarsi with two dorsal bristles, generally 

 two anterior, and with small ventral bristles. Wings a little yellowish 

 or light brownish tinged; veins black or brownish black, costa with 

 a very small swelling, so small that it may be considered as practi- 

 cally absent; discai vein with a somewhat large and angular, but ob- 

 tuse bend; axillary lobe small, anal vein going forwards. Squamulæ 

 whitish, with a black fringe. Halteres pale yellow. 



Female. Epistoma broad, light grey. Antennæ shorter than in 

 the male, third joint scarcely as long as broad. Front coxæ white- 

 haired as in the male, only with some black hairs quite inwards and 

 towards the apex; hind femora without fringe, and hind tibiæ gener- 

 ally yellow quite to the apex. 



