width, sparsely covered with black rather short pubescence ; second 

 ioint very small and much shorter, about twice as wide as long, bearing 

 similar pubescence ; third joint somewhat paler, about twice as long as 

 two basal joints together, somewhat spine-like, very thin, with 8 annu- 

 lations, of which the first is broadest, being longer than the second antennal 

 joint but much shorter than the first antennal joint ; the 8th annulation 

 of the third joint about equal as long as the preceding three annulations 

 together, bearing, a minute spur-like apical hair and a fine accessory 

 hair, second annulation shortest, as long as two following annulations ; 

 fifth to seventh annulations equal in length, slightly longer than the 

 second. 



Thorax round, dark grey, with three broad blackish stripes se- 

 parated by two very narrow whitish lines, the lateral ones interrupted 

 at the suture and about half as wide as the middle one ; humeri, pro- 

 thorax, and praealar calli distinctly grey dusted ; pubescence fairly 

 abundant and suberect, mainly whitish. Pleurae grey dusted, with 

 whitish pubescence, dense and tawny on the prothorax, on the upper 

 and hind parts of the mesopleurae, and on the meta-pleuiae ; the 

 pubescence on the ptero-pleurae rather sparse and short, and on the 

 sterno-pleurae less scarcer than on the ptero-pleurae. Scutellum 



moderate in size, blackish brown but almost entirely obscured by grey 

 dust, bearing rather sparse and short greyish pubescence, which becomes 

 somewhat longer about the tip. 



Wings hyaline, very faintly infumate, with yellowish veins, and 

 with a distinct and long brown stigma, slightly shorter than the length 

 of the body ; the upper branch of the cubital fork without a recurrent 

 veinlet ; the first posterior cell rather narrow but widely opens ; anal 

 cell closed before the wing margin. Squamae pale yellowish white, 

 with yellow margins at the alar pair, and the large and conspicuous 

 pale tuft of pubescence about the angle ; the thoracal pair with some- 

 what distinct margins and bearing a very fine almost inconspicuous 

 fringe. Halteres brown, with blackish knob, not entirely covered 



