from front deeper than the width, the facial margin very slightly 

 convex and a little shorter than the frontal margin, and the outer 

 margin strongly and about evenly convex, the facial angle about 140 , 

 the lower angle about iOO° and slightly rounded, and the top angle 

 hardly 9O . 



Thorax somewhat paler than in the female, with the blackish 

 pubescence longer and with the yellowish one more abundant and 

 longer, the pubescence on the pleurae also longer and much more 

 conspicuous ; scutellum usually bearing a rather conspicuous yellowish 

 hairs round the margin. 



Wings, squamae, and halter.es almost as in the female, but the 

 upper branch of the cubital fork of the wings very often without any 

 recurrent veinlet. 



Legs as in the female, but the all fringes more conspicuous and 

 intermixed with more black hairs. 



Abdomen rather slender, less flat than in the female, and 

 more yellowish, broader than the thorax about the base and gradually 

 narrowed towards the apex where it is always pointed so that the 

 abdomen is somewhat regularily conical. Dorsum with the large 

 yellowish lateral spots which occupy most of the basal four segments 

 except on the fairly broad blackish median spots which are gradually 

 broadened on the posterior segments and on which there are grey 

 tomentose triangles, the three apical segments black, and with the hind 

 margins of all the dorsal segments yellowish orange-, the colour ex- 

 tending to the sides, and on the inside of the yellow lateral margins 

 there is very irregular small inconspicuous dark spot on the second, 

 third and fourth segments, in which the posterior one is usually con- 

 nected with the median spot behind ; the first segment sometimes 

 wholly blackish excepting of the narrow pale orange yellow posterior 

 band ; pubescence black but yellowish on the median yellowish triangles, 

 orange yellow posterior bands and the sides. Ventre paler than the 

 dorsum with the posterior segments blackish, covered with the yellowish 



