Tabanidae. 127 



hairs, except undei" tlie wing-root where there are golden hairs. 

 Præalar cailus rufoiis. Abdonien much as in bovinus, but the dark 

 middle line is indistinct or wanting, all the segments being black at 

 the front parts, with broad, whitish yellow hind margins, these being 

 broadest at the sides; only on the first and second segments some 

 dark brown ground-colour is found here, at the sides; the pale tri- 

 angles in the dorsal line not reaching the front margins of the seg- 

 ments, and as a rule not longer than broad at the base. Venter 

 brownish black, but the hind margins of the segments, except the 

 first, broad yellowish white or white, these margins being broadest 

 at the sides thus giving rise to a broad but indistinct dark middle 

 line. Legs with the femora black or brown; tibiæ yellowish brown, 

 front tibiæ slightly darkened at the apex ; front tarsi black. The long 

 hairs on the femora black, tibiæ with short yellow hairs, hind tibiæ 

 on the outer side with a distinct fringe consisting of yellow hairs. 

 Wings with a distinct yellowish tinge towards the anterior margin and 

 brown veins. Halteres brownish with the apex of the knob paler. 



Female. Eyes unicolorous, dark copper-coloured. Frontal band 

 high and narrow, frontal cailus as in bovinus, prolonged upwards in 

 the linear middle cailus. Second joint of palpi long, slightly curved, 

 scarcely as thick as in bovinus. Thorax and abdomen chiefly as in 

 the male, the pale triangles in the dorsal middle line somewhat larger. 



Length 21 — 26 mm. 



This is our lai'gest species of Tabanus; it resembles in general 

 appearance bovinus but is larger; the male is at once recognised by 

 the eye-facets, and the female by the paler antennæ and the indistinct 

 middle line on the venter, and also in both sexes the whole pattern 

 on the dorsal side of the abdomen is, by a closer examination, 

 characteristically different from that in bovinus. 



T. sudeticus is much rarer than bovinus, but it is taken in most 

 parts of Denmark; vicinity of Copenhagen, Ordrup Mose, Vordingborg; 

 Funen at Lundeborg on the eastern coast; Lolland, and Jutland at 

 Silkeborg and Hald. All my dates of capture are in July. 



Geographical distribution: — Europe, but not with certainty 

 recorded from the northern parts; in middle Europe it seems especi- 

 ally to occour in the mountains. 



11. T. bromius L. 



1761. Linné, Fn. suec. 463, 1885. — 1842. Zett. Dipt. Scaud. 1, 107 5. 

 — 1862. Schin. F. A. I, 36. — 1880. Brauer, Denkschr. kais. Akad. Wissensch. 

 Wien, XLII, 187, 45, Tab. III et VI, Fig. 45. — 1903. Kat. palaarkt. Dipt. 

 11, 61. 



