404 Orthorrhapha brachycera. 



posterior tibiæ have apical or preapical bristles. There are two claws, 

 two pulvilli, and a somewhat long, linear empodium with bristles 

 below, and thus somewhat comb-shaped. Wings somewhat long; the 

 mediastinal vein terminating in the subcostal vein; discai vein slightly 

 and evenly curved, and a little converging towards the cubital vein; 

 posterior cross-vein about in the middle of the wing; anal vein not 

 specially short. Axillary lobe well developed. The discai vein has a 

 convexity in the middle of its last part. Squamulæ with a small 

 angulary lobe, bearing a very short fringe, and with the inner part 

 short-haired ^ 



The developmental stages are not known. 



The species of Thinopliilus occur on salt marshes and at the shore. 



Of the genus 11 species are known from the palæarctic region; 

 one occurs in Denmark. 



1. T. ruficornis Hal. 



1838. Hal. Ann. Nat. Hist. II, 184 {Medeterus). — 1862. Schin. F. A. 

 I, 228. — 1903. Kat.palaarkt.Dipt.il, 352. — Rhaphium maculicorne Zett. 

 1843. Dipt. Scand. II, 474, 15, et 1849. VIII, 3062, 15. - Thinophilus maculi- 

 cornis Zett. ibid. 1849. VIII, 3103, 2. 



Male. Vertex and frons dark æneous or bluish, a little brownish 

 pruinose. Epistoma broad, brown or yellowish brown. Palpi ferruginous. 

 Occiput brownish above, grey downwards; postocular bristles black 



Fig, 130. Antenna of T. ruficornis d", from the inside. X 120. 

 From a dried object. 



above, the hairs below white or yellowish. Antennæ reddish or brownish 

 red, the second and third joint darker brown above and at the apex. 

 Thorax greenish blue or æneous to coppery, dark olive brown pruinose, 



^ Girschner says (111. Zeitschr. fiir Entom. 1897, 558) about Thinophilus: "Das 

 fachertragende Plåttchen spitz"; in ruficornis, the only species I have examined, 

 I find it small, but not pointed. Girschner says nothing about the very short 

 fringe, which is so short that Zetterstedt says of the squamulæ "an detritæ". 



i 



