162 



Orthorrhapha brachycera. 



tracks filled with water; I have taken it over water in copula on '^N 

 and then it had small Chironomids as prey. As mentioned in the de- 

 scription of the genus it is known to envelop the prey in a web. 



Geographical distribution : — Europe down into Italy ; towards 

 the north to northern Scandinavia, and in Finland. 



12. H. aéronetha Mik. 



1892. Mik, Wien. ent. Zeitg. XI, 81. — 1892. Strobl, Verh. zool. hot. 

 Gesell. Wien, XLII, 158, nota. — Hilara angustifrons : 1892. Strobl, 1. c. 

 132, 23. 



Male. Vertex and frons velvet black, above the antennæ a small, 

 brownish triangle ; frons narrow, above the antennæ scarcely as broad 

 as the base of the third antennal joint. Epistoma brownish black; 

 palpi greyish, with long, black hairs. Occiput velvet black above, down- 

 wards dark grey, with strong, black hairs. Antennæ black. Thorax 

 dark* grey, very slightly shining, with a broad median, brownish black 

 stripe, somewhat abbreviated behind, and with the sides of the disc 

 of the same colour. The dorsocentral and acro- 

 stichal bristles of moderate length, black, the 

 former uniserial, long behind, the latter quadri- 

 serial. Further a humeral bristle, two posthumeral, 

 three notopleural, a supraalar and a postalar 

 bristle, all black and rather strong; besides there 

 are somewhat long hairs anteriorly in the præ- 

 sutural depression and in front of the supraalar 

 bristle. Scutellum with four strong, black marginal 

 bristles. Pleura grey or brownish grey pruinose; 

 humeri with a small, reddish point. Abdomen 

 duU grey, with a not very distinct, dark middle 

 line ; with the light from behind abdomen is slightly 

 shining and with the front part of the segments 

 blackish; the sides and hind parts ash-grey. It 

 is clothed with somewhat long, black hairs, longest 

 at the sides ; the hairs at the hind margin of the 

 segments somewhat longer; towards the sides at 

 the base the hairs may be a little brownish. Venter 

 dark grey, with short, black hairs. Exterior genitalia 

 somewhat large, with short, black hairs; thelamellæ 

 Fig. o9. H. aéronetha, \^,\^Q^^ shining. Legs black, slightly dark greyish 

 ion eg. X . pruinose, hind femora shining black on the posterior 

 side; coxæ greyish pruinose; knees reddish. Front femora with 

 fme hairs above and on the posterior side; middle femora short-haired 



