266 BOMBTLIID.E. 



rather flattened, style very short, 2-joiuted. Proboscis blackish, 

 as long as from tip of epistome to tip ot* scutellum, 27ior ax black, 

 with dense erect pale tawny pubescence, varying in appearance 

 according to the line of vision from greyish yellow to yellowish 

 brown, the pubescence paler above and behind the wing-base ; no 

 black hairs on upper siu'face of dorsum. Upper part of pleurje 

 witli dark rufous-tawny, nearly black, pubescence, narrowing in 

 width towai'ds wing-base ; lower part of pleurae with a narrow 

 band of whitish pubescence, below which the pubescence is black. 

 JScutellar pubescence concolorous with that of dorsum. Ahdomen 

 black, with long dense brownish-orange pubescence ; sides of 3rd 

 segment with black pubescence, which is broader anteriorly, 

 extending across the venter ; isolated long black hairs on hind 

 margins of 2nd, 3rd, and 4th segments ; 4th and remaining seg- 

 ments with numerous black hairs, scattered irregularly. Venter 

 with whitish pubescence, crossed by the transverse band of black 

 hairs on 3rd segment, and Avith a similar median longitudinal 

 band. Legs dull orange ; coxae and trochanters black ; fore 

 femora (except narrowly at tip), basal half of middle pair, and 

 basal third (less on upper side) of hind femoi*a black ; tarsi 

 blackish, but pale on first two joints for a greater or less distance ; 

 fore coxa) with long dense brownish-white pubescence, middle 

 pair with less dense and darker pubescence, hind pair with blackish 

 pubescence ; femora with long but not dense blackish pubescence 

 on about basal half, also with shorter greyish pubescence merging 

 into adpressed almost scaly pubescence; hind femora with a row 

 of about eight long black bristles on basal half below, and smaller 

 ones on apical half ; fore tibice with three posterior pairs with 

 four rows of 12 to 20 small black bristles in each I'ow ; fore tibi;c 

 with three, middle pair with five, hind pair with a circlet of small 

 black spurs ; tarsi minutelj' bristly ; pulvilli dirty whitish, em- 

 podium reduced to a minute spine ; claws rather long, black. 

 Wings clear, with an oblique baso-costal band covering the whole 

 of the base, and extending distally in gradually but irregularly 

 diminishing width, ending at about tip of 2nd vein, Roughly- 

 speaking, the hind border of the darkened part emits four short 

 but not conspicuous extensions with sloping sides respectively 

 over the alula, over upper branch of 5th vein, up to about middle 

 of 1st posterior cell, and just before tip of 2ud vein ; alar squamae 

 brown, margin darker, with long fringe ; halteres small, orange, 

 knob black. 



5 . Mainly as the c5' . Frons at widest part about half width 

 of head, narroA^'er above, with long thin yellow hairs and short 

 adpressed scaly pubescence, which latter is absent on the centre 

 ])art and for a transverse space above antennae ; upper part of 

 irons with short brownish pubescence and long black hairs. The 

 stripe of dark hair across the lower part of pleurae paler than in S , 

 seldom blackish. The black bristles on hind borders of abdominal 

 segments more conspicuous ; anus with an outer ring of black 

 and an inner fringe of short tawny ones. 



Lenc/th, 8 to 12 mm. 



