Dolichopodidae. 173 



Remarks : It is curious that Loew (Neue Beitr. V, 19) says about 

 this species, that it has a hairy (behaartes) scutelkim and is distin- 

 guished from related species by this character; also Verrall (Ent. Month. 

 Mag. XII, 1875, 34) says the same; the species has in reahty no 

 hairy scutellum, there are only some very few, short hairs above as 

 in the other species of Herxostomus. 



H. gracilis is somewhat rare in Denmark, and it was first detected 

 in 1908; Rørvig, Melby at Tisvilde, Faxe Ladeplads, and on Born- 

 holm at Hammeren (the author). My dates are only ^^ii — ^Vs. It 

 occurs in bushes and in low herbage, sometimes at ditches, and 

 especially near the shore; the localities, on which I have taken it, are 

 almost all sandy and not at all humid. 



Geographical distribution: — Northern and middle Em'ope down 

 into France; tov^ards the north to southern Sweden, 



2. H. germanus Wied. 



1817. Wied. Zool. Mag. I, 71, 17 (Dolichopus). — 1824. Meig. Syst. 

 Beschr. IV, 95, 36 (Dolichopus). — 1831. Stann. Isis 1831, 251, 40 (Doli- 

 chopus). — 1842. Stæg. Krøyer's Tidsskr. IV, 38,32 (Dolichopus). — 1843. 

 Zett. Dipt. Scand. II, 570,60, et 1852. XI, 4295, 60, et 1859. XIII, 5058, 

 60 (Dolichopus). — 1862. Schin. F. A. I, 207 (Gymnopternus). — 1903. 

 Kat. palåarkt. Dipt. II, 311. 



Male. Vertex and frons greenish, greyish or yellowish grey dusted. 

 Epistoma narrow, greyish or slightly yellowish. Palpi dark. Occiput 

 green, greyish pruinose; postocular bristles yellowish below, black 



Fig. 51. Åntenna of H. germanus cf, from the inside. X 65. 



above. Antennæ black, slightly elongated, as long as the head, third 

 joint longer than broad, truncately pointed or rounded at the end. 

 Thorax æneous green, slightly pruinose, shining; scutellum bare, only 

 with some few, pale hairs at the margin. Pleura greenish, grey 

 pruinose; propleura with a few pale hairs above, and with a black 

 prothoracic bristle. Abdomen æneous green, slightly greyish pruinose 

 downwards; it is clothed with short, black hairs and has black hind- 

 marginal bristles, which are somewhat longer on the first segment. 



