. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. 278 Orthorrliapha brachycera. plate black-haired. Legs black, the front femora somewhat thickened. The front femora with a row of strong hairs above and two rows below; middle femora with shorter hairs below, and with bristles on the antero-dorsal side in the apical half; hind femora with bristles on the antero-dorsal and on the ventral side; all femora with a strong bristle on the anterior side near the apex; front tibiæ with a few bristles on the dorsal side, and two long, subapical bristles on the
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. 278 Orthorrliapha brachycera. plate black-haired. Legs black, the front femora somewhat thickened. The front femora with a row of strong hairs above and two rows below; middle femora with shorter hairs below, and with bristles on the antero-dorsal side in the apical half; hind femora with bristles on the antero-dorsal and on the ventral side; all femora with a strong bristle on the anterior side near the apex; front tibiæ with a few bristles on the dorsal side, and two long, subapical bristles on the ventral side; middle tibiæ short-haired, with a few short bristles above and a long, subapical bristle below; hind tibiæ with long bristles on the dorsal, anterior and ventral side in the apical two thirds, and the hind metatarsi with a bristle in the middle on the posterior side; for the rest the legs densely short-haired, especially the anterior tibiæ densely ciliated below. All hairs and bristles black. Wings Fig. 126. Wing of Ch. hirta. a little brownish towards the anterior margin. The velns thick, brown, the postical cross-vein quite perpendicular. Halteres yellow or reddish yellow. Female. Similar to the male; abdomen very short-haired, and pointed. Length 3—4 mm. In not fuUy mature specimens the legs may be somewhat brownish. Ch. hirta has hitherto been taken only on the sea-shore at Tisvilde; it was present in rather great numbers, and it occurs probably also in other piaces in Denmark at sea-shores. It was for the first time taken in 1909 on the ^^'/7 and ^^h (the author). It was also taken in copula. Geographical distribution:— Europe and down into North Africa; it is not known north of Denmark, but it occurs in England. ± Ch. cursitans Zett. 1819. Zett. Vetensk. Akad. Handl. 1819, 82, 36 (Empis). — 182R. Fall. Dipt. Suec. Suppl. I, 7, 20 — 21 {Tachydromia). — 1842. Zett. Dipt. Scand. I, 322, 12 (Tachypeza). — 1903. Kat. palaarkt. Dipt. II,
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