Manchester Memoirs, Vol. xlvii. (1903), No. 14. 23 



almost impunctate ; the large labrum (which is rounded 

 at the apex) dull rufous (perhaps discoloured). The base 

 of the mandibles yellow, the middle rufous, the teeth 

 black; the front and vertex smooth and impunctate. 

 Thorax black, with a plumbeous hue; a line on the middle 

 of the pronotum, the tegulae, a mark on the apex of the 

 middle lobe, the scutellum, post-scutellum, the apex of the 

 median segment broadly (the mark broadly dilated back- 

 wards in the middle and to a less extent on the sides), the 

 base of the propleuras, a mark immediately under the hind 

 wings, a larger mark on the lower side of the mesopleurae 

 (oblique at base and apex and slightly narrowed on the 

 top and bottom in the middle), a smaller mark above this 

 (roundly curved and narrowed towards the apex above), 

 a larger mark of almost equal width behind this, and a 

 large oblique mark, slightly and gradually narrowed 

 towards the apex in the middle of the metapleurae, 

 yellow. Mesonotum impunctate, covered with a short 

 pale down ; the furrows smooth, deep ; the base of the 

 scutellum is black ; the black part of the metanotum has 

 a distinct plumbeous hue ; the two transverse keels are 

 distinct and curved backwards in the middle ; the seg- 

 ment is covered with long pale hair. Pleurae impunctate ; 

 behind the basal keel on the mesopleurae are some short 

 keels ; shortly behind the middle is a belt of striations ; 

 the apex is stoutly crenulated, as is also the apex of the 

 metapleurae ; on the depression on the base of the latter at 

 the top are two narrow keels. Mesopleurae very smooth 

 and shining, the furrow crenulated. Wings hyaline, with a 

 slight fulvous tinge ; the stigma fuscous, paler in the 

 middle ; the nervures fuscous ; the areolet almost square, 

 receiving the recurrent nervure in the middle, where the 

 cubital nervure is slightly angled in the middle ; the 

 second transverse cubital nervure is faint ; the transverse 



