390 



the frontal and hind angles with similarily rounded ; when seen from 

 front slightly deeper than the width, the facial margin nearly straight 

 and about as long as the frontal margin, the frontal angle wholly 135, 

 the top angle about 90 J and the lower angle about 110. 



Thorax comparatively large, roundish, greyer than in the female, 

 and with longer erect blackish pubescence and less yellow depressed 

 hairs, which cause the yellowish grey stripes to become less obvious ; 

 pubescence on the pleurae more abundant and much longer. Scutellum 

 greyer, with the erect blackish pubescence much long, and longer 

 than that on the disc of the thorax, and with numerous more longer 

 blackish hairs or sometimes intermixed with yellowish ones round the 

 margin. 



Wings, squamae, and halteres as in the female, but the former 

 almos 1 always much paler excepting of the yellowish costal cell. 



Legs with longer pubescence than in the female, and with much 

 more black hairs intermixed. 



Abdomen longish, flat conical, broader than the thorax on the 

 three basal segments and very longer than the head and thorax (includ- 

 ing the scutellum) together. Dorsum mainly bright brownish orange 

 with a narrow interrupted dorsal line and the tip black ; basal segmei.^ 

 black at the base but with the black colour suddenly narrowing to 

 about from one-third to one-fourth of the hindmargin but not quite 

 reaching it, and with the extreme sides blackish grey or grey ; second 

 segment with the middle sixth (or less) blackish brown but not quite 

 to the hind margin and sometimes with its sides slightly darkened ; 

 third segment with the middle fifth (or less) black but also hardly to 

 the hindmargin, and always with its sides slightly darkened ; fourth 

 segment normally with the middle thirds (or about quarter) and sides 

 more extensively blackened, and often the intermediate space darker 

 brownish orange or sometimes brownish black ; fifth, sixth and seventh 

 segments with the very narrow orange yellow hindmargins ; there are 

 small (though not inconspicuous.) rather well-defined greyish yellow 



