Diptera danica : genera and species of flies hitherto found in Denmark . op. Carol. Akad. LXII, 392, 48,Fig. 118. — 1907. Kat. palåarkt. Dipt. III, 27. Male. Eyes brownish-hairy. Frons large and unusually swollen,bluish black, shining, with a narrow longitudinal groove; vertex andfrons black-haired, Epistoma broad, greyishpruinose, with longish, partly pale, partlydark hairs on the sides; it is slightly hol-lowed below the antennæ; the central knobnot very prominent, somewhat pointed,between it and the mouth edge the epistomais somewhat hollowed; it is somewhatdescending but the lower part sli
Diptera danica : genera and species of flies hitherto found in Denmark . op. Carol. Akad. LXII, 392, 48,Fig. 118. — 1907. Kat. palåarkt. Dipt. III, 27. Male. Eyes brownish-hairy. Frons large and unusually swollen,bluish black, shining, with a narrow longitudinal groove; vertex andfrons black-haired, Epistoma broad, greyishpruinose, with longish, partly pale, partlydark hairs on the sides; it is slightly hol-lowed below the antennæ; the central knobnot very prominent, somewhat pointed,between it and the mouth edge the epistomais somewhat hollowed; it is somewhatdescending but the lower part slightly pro-minent. Eye-margins not broad, somewhatpruinose except quite below, with longish,pale hairs. Occiput grey pruinose, thiscolour stopping below the eyes; the hairs are whitish, above there are besides some r^. ^r. .. .r, r ^ ,? ,,, , , . , , ,, , , . Head of c?, long, black hairs, but the long hairs behind vertex are yellow. Antennæ small, third joint roundish, not longer than broad: the third joint is reddish or yellowish red, but. 156 Syrphidae. brown or blackish above and at apex; arista apparently bare. Thoraxblack, pruinose and almost dull, with indistinct traces of duller strlpes;it is clothed with long, erect, greyish yellow hairs, only at the marginsMith some few dark hairs and some on scutellum; there are postalarand scutellar marginal bristles, but they are weak and slightly con-spicuous, and I could se no notopleural bristles. Pleura with whitehairs, above and in front black hairs. Abdomen black, almost quitedull, with long, erect, whitish hairs, only at the hind margin of thirdsegment and at the apex some black hairs. Venter somewhat greyishpruinose, with pale hairs. Legs black, anterior femora yellowish atthe extreme apex; tibiæ yellow on the basal part, anterior tibiæ alsoslightly yellow at apex. The legs almost quite white-haired, only thehairs behind the front femora and at the apex of middle femora black,and the hind tibiæ wi
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