482 



margin moderately convex especially at the upper thirds; when seen 

 from in front about as wide as deep, the facial margin very slightly 

 convex and shorter than the frontal margin, the top angle about 90% 

 and the frontal angle about 135- 



Thorax longer than the width, with the rounded angles, blackish, 

 obscured by a yellowish grey tomentum which becomes somewhat 

 whitish anteriorly, covered with numerous short depressed yellow 

 pubescence which is intermixed with scattered erect still short black 

 hairs which do not extend at the vertical part at where there are 

 some whitish soft hairs ; humeri somewhat reddish but quite obscured 

 by a greyish white dust, and covered with abundant long pale pubes- 

 cence but on about the postero-upper half there are some shorter black 

 hairs ; praealar calli somewhat brownish below, covered with numerous 

 short recumbent yellow pubescence intermixed with some slightly 

 longer black stout hairs, and on the lower half is a not dense though 

 broad black fringe of numerous long erect hairs ; postalar calli not 

 conspicuous, haired as disc but at the outer margin there is a some- 

 what conspicuous pale brownish fringe, the similar but less conspicuous 

 and less long one about the upper wing-bases ; pleurae obscured by a 

 whitish tomentum and bearing abundant silvery white soft hairs which 

 on about the upper part of the mesopleurae grow up longer and 

 become slightly yellowish, and on the postero-upper margin a long 

 conspicuous pale yellowish grey fringe, on the upper margin of the 

 ptero- and meta-pleurae similar but greyish fringe, and on the prothorax 

 there are numerous much long white hairs. Scutellum as thorax, but 

 the pubescence all longer and more conspicuous, and with a rather 

 inconspicuous pale brownish yellow fringe on the margin. 



Wings shorter than the thorax and abdomen together, quite clear, 

 with the stigma and veins pale yellow but the costal and discal veins 

 conspicuously brownish ; posterior cells all widely open, discal cell 

 comparatively small and shorter than the first posterior cell, and anal 

 cell closed with a long petiole ; upper branch of the cubital fork with- 



