252 Orthorrhapha brachycera. 



quite brown; tibiæ yellow, hind tibiæ sometimes dark at the apex; 

 anterior tarsi more or less dark towards the end, hind tarsi quite 

 brownish or blackish, or more or less pale at the base; hind meta- 

 tarsus shorter than the second joint. The legs have short, black 

 hairs, the hind coxæ two bristles on the outside; front femora with 

 somewhat long, bristly hairs below and on the posterior side; the 

 posterior femora have short hairs, and at the apex on the anterior 

 side some bristles ; front tibiæ generally with two small bristles above, 

 middle tibiæ with a row of few, stronger antero-dorsal, and small 

 postero-dorsal bristles, and with one or two small bristles below; hind 

 tibiæ with two dorsal rows, and besides with a row of somewhat 

 bristly hairs above, and a ciliation on the anterior side. Wings almost 

 hyaline or a little yellowish; veins blackish brown, the discai bend 

 moderate. Squamulæ yellowish with the tip black, and with a blackish 

 or brownish, somewhat yellowish shining fringe. Halteres yellow. 



Female. Frons a little greenish. Epistoma broad, greyish white. 

 Antennæ short, shorter than the head, third joint not as long as 

 broad; arista much longer than the antennæ. Abdomen metallic green. 

 Femora yellow with only the hind femora blackish at the tip, and all 

 femora short-haired. 



Length 3,2 — 4,5 mm. 



L. vestita is not rare in Denmark on suitable localities; Ordrup 

 Mose, Dyrehaven, Grib Skov, at Sorø and at Faxe Ladeplads; on 

 Funen at Odense andVeflinge; in Jutland at Frijsenborg, My dates are 

 ic/g — 26/^^ jj- occurs in the same way as the species of Argyr-a and 

 often in fens and at ponds in woods. 



Geographical distribution : — Northern and middle Europe down 

 into France; towards the north to middle Sweden. 



III. Rhaphiinae. 



14. Porpliyrops Meig. 



Species of medium or somewhat large size, and of metallic green 

 colours, rarely with yellow colour on abdomen; in the females the 

 thorax not rarely densely pruinose and hence slightly metallic. Head 

 a little broader than thorax, almost circular, or a little broader than 

 high; it is semiglobular and slightly arched behind. Vertex a little 

 excavated. Frons a little decreasing in breadth towards the antennæ, 

 most in the males and here narrower than in the females. There are 

 ocellar, outer vertical and smaller postvertical bristles in both sexes; 

 on the hinder side of the ocellar tubercle there are some, or only a 



