. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 47 bristles dorsally on the hind femora, and on tlie tibiæ; there is no tuft of bristles on the hind femora, and the dense, short pubescence on the posterior femora is wanting. Length 6,5—8 mm. This species, which is our largest Rhamphomyia, is easily distin- guished both by the size, and in the male by the curious tuft of bristles on the hind femora. Rh. spinipes is not at all common in Denmark, I only know of ten specimens; Sorø (Jacobsen) and in Jutland at Rye near Silkeborg and on Seis
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 47 bristles dorsally on the hind femora, and on tlie tibiæ; there is no tuft of bristles on the hind femora, and the dense, short pubescence on the posterior femora is wanting. Length 6,5—8 mm. This species, which is our largest Rhamphomyia, is easily distin- guished both by the size, and in the male by the curious tuft of bristles on the hind femora. Rh. spinipes is not at all common in Denmark, I only know of ten specimens; Sorø (Jacobsen) and in Jutland at Rye near Silkeborg and on Seis Hede (A. Petersen). It is an autumn species, my only date is ^Vt) (Seis Hede), but it is recorded from September and October. It occurs generally in woods on humid localities; Zetterstedt records it from the twelfth of July, and the same author took it at a height of 4000 feet „in nive ambulans". Geographical distribution: — Northern and middle Europe down into France; towards the north to northernmost Scandinavia. 6. Rh. sulcata Meig. 1804. Meig. Klass. eur. zweifl. Ins. I, 229,. 26 (Empu). — 1842. Zett. Dipt. Scand. I, 396, 8 et 1849. VIII, 3034, 8 et 1859. XIII, 5012, 8. - 1862. Schin. F. A. I, 98. — 1903. Kat. palåarkt. Dipt. II, 230. Male. Eyes contiguous, the small frontal triangle blackish, light grey above the antennæ. Epistoma grey; occiput grey with black hairs. Labrum somewhat longer than the head is high; palpi black with black hairs. Antennæ somewhat longer than the head, black,. 12. Antenna of Bh. sulcata. X 65. the two basal joints slightly greyish, with black hairs; the third joint elongated, the terminal part not much attenuated. Thorax brownish grey, somewhat shining, with three blackish stripes, the median nar- row; besides there is generally a dark shade at the side margin. The dorsocentral and acrostichal bristles somewhat short, black or brownish black; the acrostichal bristles pluriserial, the hindmost dorsocentral bristle long, forwar
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