176 Orthorrhapha brachycera. 



as is well known, is somewhat varying. 1 have written to Dr. S. 

 Bengtsson in Lund about chaerophylli, and he kindly communicated 

 to me that the species is not found in Zetterstedt's collection. 



3. H. chrysozygos Wied. 



1817. Wied. Zool. Mag. I, 71, 16 (Dolichopus). — 1824. Meig. Syst. 

 Beschr. IV, 93, 33 (Dolichopus). — 1831. Stann. Isis 1831,259,48 {Doli- 

 chopus). — 1842. Stæg. Krøyer's Tidsskr. IV, 39,34 (Dolichopus). — 1843. 

 Zett. Dipt. Scand. II, 576, 65, et 1852. XI, 4297,65 (Dolichopus). — 1862. 

 Schin. F. A. I, 207 (Gynmopternus) . — 1903. Kat. palåarkt. Dipt. II, 310. 



Male. Vertex and frons green or golden green, slightly dusted. 

 Epistoma narrow, yellow. Palpi yellowish. Occiput green, a little 

 pruinose; postocular bristles yellow below, black above. Antennæ a 

 little elongated, but not or scarcely as long as the head, third joint 

 longer than broad, triangularly ovate, pointed; the antennæ are yel- 

 low, the third joint blackish above and at the apex. Thorax bright 

 green, rarely more golden or coppery; it is slightly pruinose anteriorly, 

 shinlng; at the upper angle of the præsutural depression is a small, 

 blackish, somewhat purplish spot; scutellum only with some few, 

 black hairs at the margin and above. Pleura green or æneous, greyish 

 pruinose; propleura with pale hairs and a black prothoracic bristle. 

 Abdomen green, sometimes a little golden or slightly æneous, a little 

 w^hitish grey pruinose downwards; it is clothed with short, black 

 hairs, and has hindmarginal bristles, which are a little longer on the 

 first segment, and also increasing in length towards the end. Venter 

 greenish, grey pruinose, with yellow hairs, which are somewhat long 

 at the base. Hypopygium black, greyish pruinose; eighth segment 

 with black hairs, long at the margin; on the ventral side there are 

 lobes in the middle of a shape about as in germanus., somewhat tri- 

 angular, directed downwards, with a hair at the anterior margin; at 

 the end of the hypopygium there are two pairs of inner lamellæ, the 

 lateral directed straight backwards, somewhat lancet-like, pointed, the 

 median are somewhat hidden between the lateral, they are likewise 

 straight, somewhat styhform ; the outer lamellæ are brown or blackish 

 brown, somewhat triangular with the dorsal margin straight; along 

 the apical margin there are somewhat long teeth, longest towards the 

 dorsal margin, with long, curved hairs; at the ventral angle there is 

 a tuft of shorter hairs. Legs yellow, posterior coxæ grey with the 

 apical part yellow; hind femora with a blackish spot above at the 

 apex; hind tibiæ with the apical third or almost half part black; front 

 tibiæ white on the dorsal side, front tarsi with metatarsua black or 

 brownish black with a white ring near the apex, the second joint 



