SIN 



posterior cells widely open but the first one sometimes very slightly 

 contracted towards the wing margin ; discai cell very large, and dis- 

 tinctly longer than the second posterior cell ; anal cell closed a little 

 long before the wing margin ; the upper branch of the cubital fork 

 without recurrent veinlet or .sometimes with a trace. Squamae glassy 

 greyish or smoky yellowish, with a pale brown or conspicuous dark 

 margin to the alar pair but a pale yellowish grey or paler brown 

 margin to the thoracal pair ; fringe very short and pale, but the usual 

 tuft about the angle long conspicuous and greyish white. Halteres 

 brown or dark brown, with the top of the knob usually light yellowish 

 grey or pale brown. 



Legs brownish black, with the basal half of the front tibiae and 

 with two pairs of the posterior tibiae pale yellowish or reddish brown 

 or pale yellowish, and with the extreme apices of all the femora and 

 of the middle tarsi (or sometimes hind tarsi also) yellowish brown ; 

 front coxae moderately stout and about two-thirds as long as the front 

 femora, densely covered with a ashy grey tomentum and bearing 

 abundant short white pubescence which suddenly grows up considerably 

 longer and much erect at the basal half; front femora with a grey 

 tinge caused by abundant dust, but the bare underside of the front 

 femora conspicuously black and shining and rather distinctly transverse- 

 ly s'rlolate. . but not hollowed out through the whole length; pubescence 

 on this femora long and abundant greyish white on the underside 

 with some scattered black hairs intermixed about the apical half, while 

 on the innerside there are very short depressed blackish hairs, and 

 behind the subfemoral bare space there is a rather sparse ciliation of 

 short black bristles ; two pairs of the posterior femora greyish dusted 

 as front pair, the middle pair with a conspicuous long whitish pubes- 

 cence on the outside except for very few black hairs close to the 

 apices, the posterior pair with similar pubescence on the underside and 

 with two or three stout but very short bristly hairs at the extreme 

 apices, and the remaining parts of the both pairs bearing much shorter 



