12 Ortliorrhaplia brachycera. 



1. H. grossipes L. 



1767. Linn. Syst. Nat. XII; 988, 59 \Musca). — 1862. Schin. F. A. I, 

 78. — 1903. Kat. palåarkt. Dipt. II, 219. — Emjns davi2)es: 1794. Fabr. 

 Ent. Syst. IV, 403, 4. — Hi/bos funebris: 1804. Meig. Klass eur. zweifl. 

 Ins. I, 240, 1, Tab. XI, Fig. 8-13. - 1805. Fabr. Syst. Antl. 145, 1. - 

 1820. Meig. Syst. Beschr. Il, 347, 1. — 1842. Zett. Dipt. Scand. I, 234, 

 1. et 1849. VIII, 2993, 1. et 1859. XIII, 4977, 1. — Hybos pilipes: 1820. 

 Meig. Syst. Beschr. II, 349, 5. 



Male. Epistoma light grey; proboscis and palpi black, the latter 

 with blaciiish hairs. Occiput dark grey with black bristles. Antennæ 

 black or brownish black. Thorax shining black, but with a short, 

 dense and adpressed brown pubescence, forming a brown pruinosity, 

 so that thorax becomes a little duUish and slightly brownish. The 

 thoracic disc has longitudinal rows of fine, somewhat erect, blackish 

 hairs, forming acrostichal and dorsocentral rows; the hindinost hair 

 in the latter rows, standing just on the margin of the declining hind 

 part of the disc, is somewhat strong. The notopleural and postalar 

 bristles black, and likewise the scutellar marginal bristles. Pleura 

 greyish pruinose. Abdomen shining black, but with a brownish prui- 

 nosity like that on thorax, and hence dullish, leaving at most very 

 narrow incisures black, shining; venter similarly coloured. Abdomen 

 is clothed with long, erect, whitish yellow hairs, standing especially 

 on the sides, while the dorsal surface and the venter are short haired; 

 only towards the apex the venter has longer hairs. The exterior genitalia 

 are small, nearly not at all swoUen. On the legs the hind femora 

 are very thickened, the ventral side is straight, but the dorsal side 

 rather strongly curved, so that the femora are thickest in the middle. 

 The jegs are black, shining, coxæ greyish pruinose; the coxæ have 

 somewhat long, reddish yellow hairs which are placed on the anterior 

 side of the front coxæ, on the outer side of the middle coxæ and on 

 the posterior and outer side of the hind coxæ. The anterior femora 

 liave a row of hairs on the ventral side, the middle femora also on 

 the antero-ventral side and a smaller row on the dorsal side; the 

 anterior tibiæ have rows of very long hairs, directed to the various 

 sides except the dorsal, and similar hairs are found on the two first 

 tarsal joints, here especially directed to each side; towards the end 

 of the tarsi the hairs become shorter; the tibiæ have some strong 

 bristles on the dorsal side. The hind femora have three rows of spines 

 on the ventral side, the posterior row is only present on the basal 

 half part; on the anterior side there is a row of bristles; for the rest 

 the hind legs are clothed with shorter and longer hairs long on 

 the ventral side of the femora and on the tibiæ. A separate, dense 



