2. TABANUS 383 



black bristles ; there are a few scattered "touch-hairs " near the tip of the 

 front tibia3 and on the front tarsi ; middle tibiae with a slight fringe of longer 

 hairs postero-dorsally and with the small depressed black bristles more 

 scattered and with still smaller glistening yellow ones intermixed, spurs orange 

 at the base ; hind tibise with a conspicuous even black dorsal fringe, and with 

 a shorter finer mainly pale ciliation beneath, and with the tiny bristles black 

 on the front part but glistening yellow on the back part ; tarsi with tiny 

 black bristles, but with orange bristles on the soles of the posterior paira 

 Pulvilli light brown ; claws black. 



Wings hyaline, but the base and the costal and subcostal cells yellowish ; 

 veins yellow, but the costal vein and all the thin veins after about the middle 

 of the wings blackish brown ; upper branch of the cubital fork almost always 

 with a recurrent veinlet (fig. 215). Squamae light brownish glassy with a 

 dull brownish yellow margin on which is a minute pale fringe, and the usual 

 tuft about the angle hardly so conspicuous or large as usual. Hal teres 

 pale orange. 



? . Altogether more orange than the male ; frontal stripe yellowish brown, and 

 bearing (when viewed from in front) rather abundant golden orange short 

 depressed bristly hairs or (when viewed sideways) with abundant similar 

 black bristles, and this pubescence extending (though less abundant) down to 

 the frontal triangle ; this frontal stripe is very nearly parallel-sided and is 

 about four times longer than broad, and the calli (especially the middle one) 

 are often almost hidden by the yellow dust, but usually the lower and middle 

 calli exist as shining black small roundish dots, with a narrow furrow 

 connecting them ; vertical space somewhat blackened ; frontal triangle covered 

 with golden dust ; cheeks sometimes deeper yellow, and the pubescence on 

 the cheeks, jowls, mouth, etc., sometimes brownish yellow or orange ; back of 

 the head less hollowed out than in the male, and leaving a narrow rim behind 

 the eyes on which is a very short but very dense brownish postocular fringe, 

 and this fringe is almost as short on the upper part as on the lower ; back of 

 the vertex with several short (though longer than the postocular fringe) black 

 hairs. Palpi yellow ; second joint long and hanging straight downwards, peg- 

 shaped, thickened on the basal three-fifths but afterwards diminishing to a 

 thin conical point ; this second joint bears numerous though not dense short 

 black adpressed bristles with some shorter glistening golden ones inter- 

 mixed except about the tip, while some longer thin golden hairs occur 

 on the underside ; basal joint with denser longer yellow hairs with a 

 few black hairs intermixed on the ui)per part. Eyes large and apparently 

 bare ; facets all equally small ; in life the eyes are beautifully opalescent 

 green without any band but with darkened reflections which shift in varying 

 lights. Antennae as in the male, but the third joint larger, and sometimes 

 the small black dorsal bristles on the basal joints almost absent. 



Thorax greyer than in the male, but with more golden orange fading to 

 brownish yellow pubescence on the disc, and with greyish yellow pubescence 

 on the pleurae. 



Abdomen with the orange markings almost as in the male but usually 

 obscured (unless rubbed) by the universal short depressed golden reddish 

 orange pubescence, though the black dorsal stripe is rather broader, and the 

 short black hairs are very numerous (as may be seen when the abdomen is 

 examined from behind) but very inconspicuous and rather depressed ; the 

 sidemarginal pubescence is all orange except for a slight blackish tuft at each 

 side of the basal segment. Belly greyish black but thickly covered with 

 brownish yellow dust and with the hindmargins narrowly but obviously 

 yellow, clothed all over with very short adpressed yellow pubescence except 

 about the base where the pubescence is longer and not adpressed ; usually 

 the sides of the belly are dull orange on the three basal segments though 

 separated from the sidemargins of the second and third segments by large or 

 small blackish side-spots ; the longer black hairs beneath the flattened seventh 

 segment are inconspicuous. 



Legs reddish orange, with the coxie, trochanters, and usually just the base 

 of the front femora black, as well as the basal third of the middle femora and 

 the basal half of the hind femora, the front tibiae are also blackish on the 



