Tabanidae. 119 



Brauer's type specitnen; I was then able to identify my species with 

 certainly, and I saw that niy determination was conect. The species 

 is in the male cliaracterised by its eye-facets and tlie bands of the 

 eyes, by the shape of the second joint of the palpi, (Brauer's figure 

 is a little exaggerated), and aiso the colouring of the venter is cha- 

 racteristic. It wiil be seen that my doubtful females do not seem 

 to agree with Brauer's description neitlier with his type. The female 

 type specimen I have seen was quite immalure and hence Brauer's 

 description of the pale markings on the thorax; but I am not quite 

 sure that Brauer's female is really the female of Miihlfeldi. chiefly 

 because be describes the third joint of the antennæ as: „stark erweitert". 

 that is also seen in the type, while with regard to the male he says: 

 „wenig erweitert". I do not, however, wish to raise any doubt about 

 Brauer's determination, as I am myself far from being certain with 

 regard to the female. It may also be possible that my specimens 

 are identical with Brauer's only having the abdomen much darkened 

 (as appears to be common with the females of some of our species), 

 and somewhat less dilated antennæ; at all events I think that the 

 question about the female of Miihlfeldi still remains to be solved with 

 certainty. 



T. Miihlfeldi seems not at all rare here; at Copenhagen, Erme- 

 lund, Bagsværd Sø, Hillerød, Boserup at Roskilde, Svenstrup between 

 Hoskilde and Ringsted and at Køge; Funen at Odense; Jutland at 

 Frijsenborg and Frederikshavn. My records only date from ^'/e — '/?. 



Geographical distribution : — The species is hitherto only known 

 from Siberia and Asia Minor; but I think it will prove to have a 

 much wider range. 



5. T. solstitialis Schin. 



1862. Schin. F. A. I, 30. — 1880. Brauer. Denkschr. kais. Akad. 

 Wissensch. Wien. XLII, 150. 12, Tab. I et V, Fig. 12. — 1903. Kat. palå- 

 arkt. Dipt. II, 71. — ?1820. Meig. Sysl. Beschr. II, 56, 33. 



Male. Eyes green, somewhat copper-coloured above; with two 

 bands and above these a rudiment on the border between the large and 

 small facets; the facets of difTerent sizes, in the upper two thirds, 

 except the margin, somewhat larger than in the lower third part, the 

 dividing line not sharp. Eyes densely pale brownish hairy. Frontal 

 triangle yellowish grey, face grey, yellow haired, the outer margin of 

 the cheeks with blackish hairs. Antennæ reddish, the basal joint 

 only slightly greyish, the style more or less black; the third joint 

 moderately dilated with the upper angle sharp. Palpi (Fig. 37) greyish 

 yellow; the second joint much thickened, globular ovate with a little 



