Empididae. 177 



the tibiæ, and also shorter than the four following joints; all tarsal 

 joints longer than broad, except the fourth joint on the middle tarsi. 

 The hairs chiefly brownish, the bristles black. Wings hyaline or 

 slightly yellowish tinged. Veins lighter or darker brown, paler to- 

 wards the base; the upper branch of the cubital vein somewhat 

 diverging, not curved at the apex; the anal vein can be traced to or 

 almost to the wing-margin. Stigma brownish. Halteres yellow. 



Female. Quite similar to the male; frons a little broader. Front 

 metatarsi simple, about half as long as tibiæ, and as long as the 

 three following joints; hind tibiæ simple, straight, not compressed. 



Length 4 — 4,5 mm. 



H. gallica is rare in Denmark, only seven specimens are known; 

 Charlottenlund (Stæger), Boserup at Roskilde (H. J. Hansen) and at 

 Tisvilde (the author); the dates are from May to *^/7. 



Geographical distribution : — Northern and middle Europe down 

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



22. H. lurida Fall. 



1815. Fall. Dipt. Suec. Empid. 22, 13 (Empis). — 1822. Meig. Sysl. 

 Beschr. III, 8, 12. — 1842. Zett. Dipt. Scand. I, 336, 1. — 1862. Schin. 

 F. A. I, 114. — 1892. Strobl, Verh. zool. bot. Gesell. Wien, XLII, 171,54. 

 — 1903. Kat. palåarkt. Dipt. II, 252. 



Male. Vertex and frons velvet black, the latter brownish just 

 above the antennæ; epistoma dark greyish; palpi reddish, with dark 

 hairs. Occiput duU black or, seen from the side, dark grey, with 

 black, below more brownish hairs. Antennæ black or brownish black. 

 Thorax blackish grey, slightly shining, generally with two, very faint, 

 darker stripes; sometimes also a middle stripe is visible; humeri and 

 postalar callus reddish. The dorsocentral bristles uniserial, long, 

 longer behind, the acrostichal bristles somewhat shorter, quadriserial, 

 but often irregular, so that there are more than four rows; all black. 

 Further a humeral bristle^ one or two posthumeral, three notopleural, 

 a supraalar and a postalar bristle, all rather long, black; besides 

 there are other hairs or smaller bristles on the sides and in the præ- 

 sutural depression. Pleura dark grey, with reddish or brownish, in- 

 definite spots. Scutellum with four black marginal bristles. Abdomen 

 blackish or greyish brown, more or less yellowish at the base; it has 

 black hairs and long marginal bristles on the segments. Venter 

 similarly coloured, short-haired. Exterior genitalia of medium size, 

 slightly compressed, somewhat high, the lamellæ each with a broad, 

 outer and a slender, inner process, both long, and above with long, 

 bristly hairs, which are directed backwards. Legs yellow, also the 



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