Empididae. 155 



with an acute angle, and somewhat diverging; the anal vein continued 

 to, or almost to the margin. Stigma black. Halteres black. 



Female. Quite similar to the male. The bristles on the dorsal 

 side of the front tibiæ shorter; metatarsi simple, buL short, about 

 one fourth part of the tibiæ in length, and scarcely as long as the 

 three folio wing joints, which are shorter than broad; hind tibiæ 

 somewhat compressed and slightly curved in the middle. 



Length 2,2—3 mm. 



This species is easily recognised by the characteristic shape of 

 the front metatarsi in the male, and the female agrees so fully with 

 the male, that it also is easily recognised, and besides its hind tibiæ 

 are characteristic. Strobl says (1. c.) about the front metatarsus in 

 the male "fast so lang, als die Schiene", I find it considerably 

 shorter. 



H. chorica is common in Denmark; at Vedbæk; on Fænø; in 

 Jutland at Laven and Sminge near Silkeborg, Holstebro, Hald near 

 Viborg, Gjerlev near Randers Fjord, Tinbæk Mølle at Lindenborg Aa 

 near Skørping, Sæby, Frederikshavn and Jerup near Frederikshavn; 

 finally on Bornholm at Hasle, Allinge and Rø. It has been taken 

 from ^*/(; to the middle of August. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to Lapland, and in Finland. 



7. H. pseudochorica Strobl. 

 1892. Strobl, Verh. zool. bot. Geseli. Wien, XLII, 109, 4. — 1903. 

 Kat. palåarkt. Dipt. II, 225. 



Male. Vertex and frons velvet black; epistoma black; palpi dark 

 or blackish, with dark hairs, between which only one long. Occiput 

 velvet black, with black hairs. Antennæ black. Thorax black, some- 

 what fatty shining. The dorsocentral and acrostichal bristles some- 

 what long, black; Ihe former uniserial, longer behind, the latter bi- 

 serial. Further a humeral bristle, a posthumeral, two or three noto- 

 pleural, a supraalar and a postalar bristle, all black. Pleura dark, 

 slightly greyish, Scutellum with four black marginal bristles, the 

 inner longest. Abdomen black, slightly shining, with black hairs and 

 fine marginal bristles on the segments. Venter greyish black, short- 

 haired. Exte'rior genitalia large, much compressed, distinctly haired 

 with somewhat longish hairs. Legs black or brownish black; coxæ 

 slightly pruinose. Front femora with fine hairs on the posterior 

 side; middle femora with bristly hairs on the anterior side; hind 

 femora with short hairs above, long hairs below; front tibiæ with 

 fine hairs and some longer bristles on the dorsal side; hind tibiæ 



