Diptera danica : genera and species of flies hitherto found in Denmark . the distinct frontal side dust spots in the female, butI have omitted to do so here, as I think it well to await the studyof more material. The size and shape of the genitalia and the courseof the upper marginal cross-vein seem to show, that Penium is moreallied to Cnemodon than to Pipizella. P. duhium does not seem to be rare, but it has only been takenin the vicinity of Copenhagen; Amager Fælled, Ermelund (the author) 70 Syrphidae. and Charlottenlund (Stæger). The dates are ^^/s—^^/s; in Ermelund Itook it in some number
Diptera danica : genera and species of flies hitherto found in Denmark . the distinct frontal side dust spots in the female, butI have omitted to do so here, as I think it well to await the studyof more material. The size and shape of the genitalia and the courseof the upper marginal cross-vein seem to show, that Penium is moreallied to Cnemodon than to Pipizella. P. duhium does not seem to be rare, but it has only been takenin the vicinity of Copenhagen; Amager Fælled, Ermelund (the author) 70 Syrphidae. and Charlottenlund (Stæger). The dates are ^^/s—^^/s; in Ermelund Itook it in some number on ^^/s and ^/s, it occured on a humid, some-what shaded plaee, especially on the leaves of Aegopodium. 5. Cnemodon Egger. This genus is like the preceding chiefly agreeing with species are rather small, of black colour. Frons not protrudingand in the male it is arched; in the female it has a transverse depres-sion; there are no, or at all events only very small side dust æ short, the third joint not or only a little longer than
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