Manchester Memoirs, Vol. xlvii. {\C)Ol\ No. 14. 41 



anterioribus flavis, coxis posticis nigris ; alis hya/inis, 

 stigmate Pallido, nervis ficsds. ? . 



Long. 8 mm. 



Antenna; black ; the apex of the sixth, and the 

 seventh to tenth joints of the flagellum, white ; the scape 

 yellowish beneath. Head black ; the face, clypeus 

 broadly at the base, the base of the mandibles broadly 

 and the eye orbits narrowly above, broadly on the outer- 

 side below, yellow ; the apex of the clypeus with the 

 teeth, and the teeth of the mandibles, black. The face 

 finely punctured in the middle, closely covered with 

 short pubescence ; the palpi yellow. The front and 

 vertex shining, smooth and impunctate ; the ocelli are 

 bordered laterally by a furrow. Thorax black, the edge 

 of the pronotum broadly ; two narrow lines on the 

 ■ mesonotum placed nearer the apex than the base, the 

 scutellum, post - scutellum, the sides of the median 

 segment below and including the spines, the top of the 

 posterior median area, the base of the prothorax broadly, 

 the tubercles, a large mark on the upper part of the 

 mesopleurse ending above in a hook-shaped piece, the 

 greater part of the lower side, a small mark on the side of 

 the mesosternum, a small mark under the hinder wing 

 and the greater part of the metapleurse between the keels, 

 yellow. Mesonotum closely and finely punctured ; the 

 scutellum smooth ; the basal depression deep, smooth ; 

 the keels stout ; the keel on the sides of the scutellum 

 extending to shortly beyond the middle. Median 

 segment smooth and shining ; all the area; complete, the 

 keels stout ; the basal median area large, obliquely 

 narrowed towards the apex ; the supramedian some- 

 what longer than wide ; transverse at the base and 

 apex ; the sides obliquely narrow ed at the base ; the 

 posterior median area rounded at the base ; the keels 



