406 TABANID^. 



14. T. bromius Linne. Eyes one-banded. Frons nowhere shining 

 (unless rubbed) and with no dark cross-band at the level of the antennae ; 

 male without any long postocular fringe; female with the postocular 

 part of the occiput only very slightly inflated, and with the middle frontal 

 callus linear. 



A rather small yellowish brown species with scarcely any 

 reddish coloring on the abdomen. 



($ . Head not conspicuously larger or more arched than in the female, though 

 slightly broader than the thorax ; face pale yellowish grey, growing whiter 

 but not silvery on the lower part, bare on quite the middle but with long 

 (though comparatively short) fairly dense and fine greyish yellow pubescence 

 round the bare part and on the inflated side-cheeks and with more or less 

 blackish (though not conspicuous) hairs on the upper part of the side-cheeks ; 

 pubescence on the lower part of the cheeks, at the back of the mouth, and on 

 the jowls longer and pale greyish yellow (almost whitish) ; across the 

 lop of the cheeks from the antennae to the eyes there is a very inconspicuous 

 darkening which would not be noticed unless sought for ; the bare rim under 

 the eyes greyish white ; back of the head with a very narrow pale bare 

 postocular rim which at the temple region is practically sunk behind the 

 eyes, and behind which is a very short very inconspicuous bro^\^lish yellow 

 ciliation which hardly grows longer near the toj) angle of the eyes 

 ( = temple regions) and which has absolutely no long overhanging or out- 

 standing hairs, but in some lights the short ciliation on the temple regions 

 is almost whitish ; vertex slightly raised, extending lower down between 

 the eyes than in T. inacuHcornis or T. cordiger, blackish grey and clothed 

 with short dense brownish yellow pubescence which is not nearly long enough 

 to constitute a tuft ; frontal triangle pale grey with usually a slight yellowish 

 tinge and with the upper point inclined to have a blackish hue. Palpi pale 

 orange • end-joint oblong ovate, bladdery, about twice as long as its thickest 

 part which is a little before its middle, and ending in a rather sudden 

 blunt conical or sometimes evenly rounded tip, and usually with a slight com- 

 pression beneath just before the tip, widely clothed on its upper part with long 

 soft thin pale yellow pubescence of which there is sometimes some indication 

 on the underside, but the lower half of the outside, sometimes all the under- 

 side, and all the tip with numerous (almost dense) not very short black 

 bristly hairs • basal joint short ovate, half as long as the end-joint, with a 

 slight blackish grey tinge except at the tip, and clothed with long thin pale 

 yellow pubescence. Eyes not quite bare but apparently so, as there are only 

 some very short sparse hairs, bronzy green in life with one brownish 

 purple band just below the middle which does not quite extend to the 

 hindmargin, while below that band the eyes are greener than above it ; 

 facets on nearly the upper two-thirds very much larger (about six times) than 

 those on the lower part, and the large facets extend upwards to the ocellar 

 knob and downwards to and rather beyond the junction of the eyes, while 

 the small facets do not extend in a zone up along the back margin though 

 the contrast in size is not so conspicuous thei'e. Antennae dull orange red 

 or rather darker ; two basal joints rather obscured with blackish grey but 

 with an orange red tinge visible as a ground colour ; style-like portion 

 usually blackish brown • basal joint extended like a hood over the second 

 joint, and bearing on all its upper side dense short black bristles, while 

 on its underside are longer thin pale hairs ; second joint with an apical 

 circlet of black bristles which are very short on the upper side but rather 

 longer on the under side ; third joint but little widened, and with only a 

 small blunt dorsal hump on the basal quarter and usually with a few tiny 

 black bristles there ; style-like portion nearly as long as the hasal segment 

 of the third joint. 



Thorax brownish grey, with five yellowish grey stripes best visible when 

 seen from behind ; middle stripe the most conspicuous and not con- 



