Diptera danica : genera and species of flies hitherto found in Denmark . 24. Stein, Arch. f. Naturgesch. 90, 6, 199. Male. Frons narrow, not or scarcely half as broad as the and face whitish silvery or a little yellowish, especially theorbits; jowls grey; frontal stripe black. No outer vertical on cheeks not strong, in one row. Vibrissæ ascending to twothirds of the height. Jowls black-haired. Occiput grey, with blackhairs and pale hairs on middle part and below. Antennæ somewhatlong, third joint fully twice as long as second, reaching below thelower eye-margin. Pa
Diptera danica : genera and species of flies hitherto found in Denmark . 24. Stein, Arch. f. Naturgesch. 90, 6, 199. Male. Frons narrow, not or scarcely half as broad as the and face whitish silvery or a little yellowish, especially theorbits; jowls grey; frontal stripe black. No outer vertical on cheeks not strong, in one row. Vibrissæ ascending to twothirds of the height. Jowls black-haired. Occiput grey, with blackhairs and pale hairs on middle part and below. Antennæ somewhatlong, third joint fully twice as long as second, reaching below thelower eye-margin. Palpi thin, black. Thorax grey, the black stripesas broad as the interstices and of equal breadth; four postsuturaldorsocentrals; præscutellar and generally some præsutural acrosti-chals of which a pair just before the suture as a rule is distinct; apræsutural intraalar bristle. Scutellum with apical bristles. Abdomengrey, black or brownish black tessellated; third segment withoutbristles. Fourth sternite with decumbent hairs. Fifth sternite without 188 brush, with moderately strong marginal bristles. Præhypopygialsegment greyish pruinose, withoiit marginal bristles. Hypopygiumblack, densely haired; upper forceps long, cleft to near middle; inprofile with nearly parallel margins, a little ventrally ciirved; the dorsal margin a little emarginate somewhatabove apex; each arm has along the dorsalmargin a broad and deep furrow; the forcepshas long hairs above, the arms short, densehairs on the part between the furrow and theventral margin; lower forceps a little elong-ated. Anterior claspers longer than posterior,curved, with a triangular dilatation at base,flattened and obtuse at end; the posteriorclaspers more pointed. Penis somewhat chiti-nised, the end bent forwards, deeply androimdly cleft into two somewhat spatula-shaped branches, betw^een which a paleworm-like appendage; on the ventral sidepale roimdish lobes and below them a blackdownwards directed appendag
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