Empididae. 13 



and short pubescence is found qn the ventral side of the front tibiæ 

 and at the apex on the posterior and ventral side of the hind tibiæ, 

 and below the hind tarsi ; the hind metatarsi have some small spines 

 below. All the spines and bristles are black, the hairs blackish or 

 brownish, those on the hind legs brown to pale brown. Wings 

 generally more or less strongly brownish tinged, but sometimes almost 

 clear; veins darker or paler brown, and generally a little thicker in 

 the strongly tinged wings than in the clear. Stigma brown, relatively 

 little conspicuous when the wing is strongly tinged. Halteres pale 

 yellow or whitish yellow. 



Female. Anterior tibiæ and tarsi without long hairs; hind femora 

 only shghtly thickened. 



Length 4—5,5 mm. 



Remarks: I think it probable that Meigen has had no clear idea 

 of the sexes in Hyhos, and that his H. pUijyes is the male of the 

 present species. 



H. grossipes is not uncommon in Denmark, though it seems to 

 be the least conmion of our species; Ordrup, Dyrehaven, Espergærde, 

 Boserup at Roskilde; in Jutland at Frijsenborg, Rye near Silkeborg 

 and Sæby. The dates are ^'^h—'-^^ls. I have once taken it with a 

 Phora as prey; Poulton (Trans, of the Ent. Soc. London, 1906, 379) 

 records it from England with the following prey: Microplitis ocellatæ 

 Bouché, another Braconid, Sciara sp., Typhlocijba quercus F. and 

 Fsylla sp. 



Geographical distribution : — Europe down into Italy ; towards the 

 north into Lapland. 



2. H. femoratus Miill. 



1776. Miill. Zool. Dan. Prodr. 2135 (Asilus). — 1862. Schin. F. A. 1. 78. 

 — 1903. Kat. palaarkt. Dipt. II. 218. — Hijbos flavipes : 1804. Meig. Klass. 

 eur. zweifl. Ins. I, 241, 2. — 1805. Fabr. Syst. Antl. 145, 2. — 1820. 

 Meig. Syst. Beschr. II, 348, 3, Tab. XXI, Fig. 20. - 1842. Zett. Dipt. 

 Scand. I, 235, 4 et 1859, XIII, 4978, 4. —Nybos fiimipennis: 1820. Meig. 

 Syst. Beschr. II, 349, 4. — 1842. Zett. Dipt. Scand. I, 235, 5. — 1862. 

 Schin. F. A. I, 78. — 1903. Kat. palaarkt. Dipt. II, 219. 



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

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

 black or brownish black. Thorax black, shining; prothorax, humeri, 

 the whole margin of the disc, the flat, declining part in front of the 

 scutellum and a median, backwards slightly narrowed stripe brownish 

 grey, caused by a very short pubescence; these pubescent parts may 

 be more or less distinct and the median stripe broader or narrower. 



