202 Orthorrhapha brachycera. 



The female of this species is distinguished from the female of 

 discipes by the shoiter legs, the middle tarsi being about as long as 

 tibiæ and the hind tarsi shorter, while in discipes the middle tarsi are 

 distinctly longer than tibiæ and the hind tarsi slightly longer; besides 

 ohscurellus is smaller. 



H.obscurellus is common in Denmark; Charlottenlund, Ordrup Mose, 

 Ermelund, Dyrehaven, Lynuby Mose, Faxe Ladeplads; in Jutland in Vejle 

 Nørreskov, and on Bornholm at Almindingen and Hammeren. My 

 dates are 1^/7—^/9, it thus occurs somevvhat late; it was taken in 

 copula on ^^U. It occurs in and at woods at the horders of water 

 and on water piants and may sometimes be present in great numbers. 

 I have once taken it with a small cicadid as prey. 



Geographical distribution: — Northern and middle Europe down 

 into Gorsica; towards the north lo southern Sweden. 



3. H. crinipes Stæg. 



1842. Stæg. Krøyer's Tidsskr. IV, 6, 2 (Sybistroma). — 1843. Zett. 

 Dipt. Scand. II, 581, 70, et 1849. VIII, 3087, 70 (Dolichopus). — 1862. 

 Schin. F. A. I, 226. — 1903. Kat. palåarkt. Dipt. II, 313. — Dolichopus 

 pectinifer Zett. 1842. Isis 1842, 834, 16, Tab. I, Fig. 67-69. 



Male. Head as high as broad. Vertex and frons light grey or 

 whitish grey; ocellar tubercle dark. Epistoma very narrow, whitish 

 grey. Palpi dark. Occiput a little greenish, grey pruinose; postocular 

 bristles black above, yellow below. Antennæ black, short, shorter 

 than the head, third joint shorter than broad, ovately pointed; the 



Fig. 64. Antenna of H. crinipes c?, from the inside. X 65. 



arista somewhat long, of the same thickness in its whole length, not 

 pointed at the apex; its first joint is short, not longer than the third 

 antennal joint, a little thickened towards the apex; the arista is in- 

 serted somewhat near the apex of the third joint. Thorax daik 

 greenish or somewhat æneous, a little pruinose, somewhat shining. 

 Pleura greenish or æneous, grey pruinose; propleura with fine and 

 short, pale hairs and a black prothoracic bristle; metaepimera grey. 

 Abdomen greenish, sometimes with slight, coppery reflexes, slightly 

 greyish pruinose downwards; it is clothed with short, black hairs, and 



