Tabanidae. 1 17 



or a still larger part, black; front tarsi biack, posterior blackish brovvn; 

 the legs are clothed with hairs quite in the common way. Wings 

 with a yeilowish tinge towards the anterior margin; veins dark yellow, 

 the cross-veins and the base of tlie fork of the cubital vein aften with 

 a faint tinge. Balteres brown. 



Female. Eyes green with three bands; frontal band grey, broad 

 and low, very slightly narrowed downwards, about two and a half 

 times as high as broad below. Frontal triangle shining black. only 

 grey just above the antennæ; frontal cailus low and broad, connecled 

 with the triangle ; middle calJus spindle-shaped. Ocellar tubercie ovate. 

 Second joint of palpi (Fig. 35) rather short, nnich thickened, with 

 a sharp point, the front edge very convex, the hinder edge nearly 

 straight; the joint yellow, clothed with whitish silky hairs and a few 

 black ones. Abdomen with the reddish niarkings much more restricted 

 than in the male, generally only present as small side spots on the 

 second and third segments, in which spots the pale hairs are distinctly 

 seeii. Venter as in the male, or with a dark middle line, or altogether 

 grey. The hairs on the legs paler than in the male. 



Length 12,5—14,5 mm. 



This species is in the male characterised by the low head and 

 the short eye-suture, as well as by the shape of the palpi; in the 

 fernale it is at once recognised by the shining black front, and also 

 the palpi are very characteristic ; moreover the species is smaller than 

 the two preceding ones. I can absolutely confirm Brauer's statement 

 that the females have never a poUinose frontal triangle, but this is 

 always shining. 



T.luridus is less common than the two preceding species; vicinity 

 of Copenhagen, .Jyderup near Faxe ; Jutland at Frijsenborg and Silke- 

 borg and on Bornholm in Almindingen; it is usually only taken in 

 single specimens. I have records of it from ^^/s to the first half of July. 



Geographical distribution: — Northern and middle Europe from 

 Swedish Lapland to Bohemia. 



4. T. Muhlfeldi Brauer. 



1880. Brauer, Denkschr. kais. Akad. Wissensch. Wien, XLII, 149, 11, 

 Tab. V, Fig. 11. — 1903. Kat. palaarkt. Dipt. II, 68. 



Male. Head rather small. Eyes green with two bands, and above 

 these a rudimentary one or a faint red tinge on the border of the 

 part with the larger facets, this part somewhat copper-coloured. The 

 facets of different sizes, but the difference not great; from the suture 

 and out in the larger part of the middle of the eye the facets are 

 larger, the dividing line between the large and small facets not sharp. 



