1 14 Oithonhajjlia brachycera. 



rufous, black at the apical half, posterior tibiæ riifous; front tarsi 

 black, posterior tarsi rufous, slightly darkened towards the ends. The 

 legs are clotlied uith dark brownish to blackish hairs, whicii are rather 

 long on the under side of the femora and on the niiddle tibiæ; the 

 hind tibiæ have a fringe of shorter ciliæ, especially on the outer side, 

 and the front tibiæ are covered witii short hairs; the front coxæ are 

 covered with long, greyish hairs. Wings somewhat yeilowish towards 

 the anterior margin; veins yellow, frequeiitly an indistinct yeilowish 

 spot at the base of the cubital fork. Halteres brown, apical half of 

 the knob pale. 



Female. Eyes green with three bands. Frontal band greyish 

 yellow, slightly narrowed downwards, about four times as high as 

 broad below ; frontal cailus shining, most frequently somewhat rounded 

 above; middle callus more or less linear or spindle-shaped ; ocellar 

 tubercle brown, ovate. Second joint of palpi (Fig. '6H) pale yellow, 

 rather long, slightly curved, scarcely thickened and somewhat truncate 

 at tiie apex, clothed with sliort wilhish hairs intermingled with black 

 ones. Tliorax more greyish than in the male, and the stripes often 

 more distinct. Abdomen broader and more stubby, the reddish 

 markings often smaller, and the venter frequently with a dark 

 middle line; the pale hairs much more extended and the side margins 

 not black haired. 



Length 14 — 17 mm. 



In the pupa the three tubercles, lying above in a triangle, are 

 small; it has a lengtii of 23 mm. 



T. montamis seems to be one of the commonest species in Den- 

 mark ; vicinity of Copenhagen, Dyrehaven, Gentofte, Frederiksdal, 

 Hareskov, Geel Skov, Ruderhegn, Hillerød, Frerslev Hegn, Esrom Sø, 

 Tidsvilde; Funen at Langensø; Jutland in Greisdalen near Vejle, and 

 at Silkeborg. It occurs from -Vn — -'7. A pair in copula were taken 

 in Hareskov on -'lu. The larva was taken at Donse in the earth near 

 water on "4, it transformed to pupa '5 and emerged ^-''s. 



Geographical distribution: — Nortiiern and middle Europe down 

 into France, and in Siberia. 



2. T. tropicus Panz. 



1794. Panz. Fii. germ. XIII, 22. — 1842. Zett. Dipt Scand. I, 111, 

 10, p. p. — 1880. Brauer, Denkschr. kais. Akad. Wissensch. AVien, XLII, 

 146, 9, Tab. I et V, Fig. 9. — 1903. Kat. palaarkt. Dipt. II. 73. — 1862. 

 T. luridus, Schin. F. A. 1, 31, p.p. 



Male. Eyes with three bands, densely pale brownish hairy ; eye- 

 facets practically of equal size, only imperceptibly larger in the middle. 



