204 Orthorrhapha brachycera. 



one or two similar hairs on the poslero-ventral side near the base. 

 Wings somewhat brownisii; veins blackisii, discai vein with a distinct 

 curve, lying nearer the cross-vein than the apex. Squamulæ yellow, 

 with a yellow fringe. Halteres yellow. 



Female. Epistoma broad, grey. Antennæ slightly shorter than in 

 the male, the arista shorter and a little attenuated towards the apex. 

 Anterior tarsi mueh shorter than in the male, and the front tarsi 

 simple, the metatarsus however with short, bristly hairs beneath, longest 

 towards the base. 



Length 3,5 — 4,6 mm. 



H. crinipes is not rare in Denmark, and may sometimes be taken 

 in rather great number; Lersøen, Ordrup Mose, Ermelund, Dyrehaven, 

 Bøllemosen, Lyngby Mose, Ørholm and Hillerød; it has thus hitherto 

 only been taken in North Sealand. My dates are ^/e — ^/t; Stæger 

 notes that it has also been taken in May. It occurs in woods on 

 humid meadows and in low herbage on humid piaces, and at the 

 horders of water. I have taken it in copula on ^^/c. 



Geographical distribution : — Northern and middle Europe down 

 into Styria, Bohemia and Hungary; it has its northern limit in Den- 

 mark, as it is not known from Scandinavia, nor does it occur in 

 England. 



4. H. crinicauda Zett. 



1849. Zelt. Dipt. Scand. VIII, 3087,70—71 {Dolichopus). — 1903. Kat. 

 palåarkt. Dipt. II, 313. 



Male. Head as high as broad. Vertex and frons whitish grey; 

 ocellar tubercle dark. Epistoma somewhat broad, whitish grey. Palpi 

 dark. Occiput slightly æneous, grey pruinose; postocular bristles black 

 above, yellow below. Antennæ quite as in crinipes. Thorax dark 

 green, slightly pruinose, shining. Pleura greenisli, grey pruinose; 

 metaepimera grey; propleura with a few, pale hairs, and a black 

 prothoracic bristle. Abdomen green, very slightly pruinose down- 

 wards; it is clothed with short, black hairs; the hindmarginal bristles 

 are long at the apex and on the sides of the flrst segment. Venter 

 greyish, a little translucently yellowish, with pale hairs. Hypopygium 

 small, rnuch smaller than in crinipes, black; the ventral lobes are 

 shorter, evenly dilated, with the apex rounded, and they are bent 

 upwards from the middle; they are whitish with the margin in the 

 outer part brownish; the apical part has, as in crinipes, very long, 

 brownish, flattened and curved hairs, the first hair on the ventral 

 side likewise curious, very flat, almost lancet-shaped ; longer forwards 

 on the ventral margin stands a single hair; the outer lamellæ are al- 



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