Platypeza. 33 



Fabr. Syst. Antl. 271, 22 {Dolichopus). — 1838. Zett. Ins. Lapp. 529, 1 et 

 1844. Dipt. Scand. III, 901, 3. — 1862. Schin. F. A. I, 241. — 1901. Verr. 

 Brit. Fl. VIII, 49, 6, figs. 69—72. — 1907. Kat. palåarkt. Dipt. III, 187. — 

 1910. Wahlgr. Entom. Tidsskr. 234, 5. — P. brunneipennis Macq. 1835. Suit. 

 å Buff. II, 18, 5. — 1838. Meig. 1. c. VII, 145, 12. — P. media 1844. Zett. Dipt. 

 Scand. III, 905, 6. 



Male. Vertex, frons and face black; frons not specially broad, 

 bare; face not broader than high; jowls and cheeks very broad, 

 with strong black liairs. Occiput black with black hairs and long 

 postocular cilia. Antennæ black with some long bristles at apex 

 of second joint. Palpi black. Thorax velvet black; the dorsocentrals 



Fig. 7. Wing of P. fasciata ^ . 



somewhat long, the rows pluriserial on front part, and there are 

 besides niimerous hairs on the sides of the disc the last one or two of 

 which are strong; a number of notopleural bristles. Pleiira somewhat 

 greyish brown. Abdomen a little flattened, velvet black, sixth seg- 

 ment grey; genitalia small, grey. Abdomen has longish black hairs 

 at the sides and is quite short-haired above; at the hind margin of 

 sixth segment small black bristles. Legs black or brownish black; 

 hind tibiæ slightly, the tarsi well dilated; metatarsus and second 

 joint most dilated and short, third joint a little shorter than the two 

 first together, fourth less dilated. Anterior femora with long black 

 hairs on posterior side, hind femora with only few longish hairs below 

 at base. Wings slightly yellowish, third costal segment a little more so, 

 considerably longer than second segment; veins black; medial cross- 

 vein just below apex of mediastinal vein; lower branch of the fork 

 short, not reaching margin; anal cell longer than the rest of anal 

 vein. Squamulæ blackish brown. H alteres black. 



Female. Quite different. Frons broad, grey, with short hairs 

 except just along middle. Jowls, face and occiput grey; hairs on 

 cheeks and jowls shorter than in male. Antennæ without long hairs 



3 



