298 Orthorrhapha brachycera. 



than the others. Head about of the breadth of thorax; there are 

 the usual ocellar, outer vertical and smaller postvertical bristles. The 

 eyes are very short- almost niicroscopically hairy ; the facets in the 

 male slightly enlarged tovvards the epistoma. The eyes are separ- 

 ated in both sexes, the epistoma a little broader in the female than 

 in the male; tiie clypeus does not reach the lower margin of the 

 eyes. The postocular bristles form a single row. The antennæ are 

 long in the male, the third joint elongated, more or less lancet-shaped ; 

 in the female they are shorter; the arista is apical, in the male much 

 shorter than the antennæ, in the female as long as the antennæ 

 or longer. The second antennal joint is simple. The first joint is 

 bare above, the second has small bristles at the apex, the third is 

 distinctly hairy and the arista short-hairy. The proboscis is only 

 slightly stronger in the female than in the male, and the palpi large 

 in both sexes. Thorax has somewhat numeroiis, distinct and distinctly 

 biserial acrostichal bristles ; there are {leucurus) six dorsocentral bristles, 

 fm'ther a humeral, a posthumeral, two notopleural, a præsutural, three 

 supraalar and a postalar bristle; the disc has only few hairs on the 

 front part. Scutellum bare above, with two strong marginal bristles, 

 and at each side a smaller bristle or hair. Propleural hairs few, one 

 of them may be bristly. Abdomen in the male compressed towards 

 the end, with six visible dorsal segments; the hypopygium is rather 

 large, curved up under abdomen, pedunculated, with a shorter or 

 longer, to rather long peduncle (seventh segment), which may be longer 

 than the hypopygium itself; there are shorter or longer ventral lobes, 

 and likewise shorter or longer outer lamellæ, sometimes furcated. In 

 the female the abdomen has five normal segments, generally also a 

 smaller sixth may be seen. Dot-like impressions are present on the 

 second, third and fourth segments, but I have only seen them in the 

 female. The abdominal segments have only short hindmarginal bristles, 

 longer on the first segment. Legs somewhat long and slender, especi- 

 ally the tarsi; they are simple in both sexes; coxæ and femora only 

 short-haired, the hind coxæ with a bristle on the outer side ; femora 

 without preapical bristles ; front tibiæ without bristles ; posterior tibiæ 

 with only few. Hind metatarsus short, about half as long as the 

 second joint, without bristles. Wings of usual shape (in the male of 

 Scholtzii excised in the hind margin before the apex); the mediastinal 

 vein terminating in the subcosLal vein, the discai vein very slightly, 

 or more, curved, parallel with the cubital vein or converging towards 

 it; posterior cross-vein in or about in the middle. The discai vein 

 with a small convexity on the curve. Squamulæ with a somewhat 



