Manchester Memoirs, Vol. xliii. (1899), No. 3. IS9 



covered with short, white hair ; the basal half of the 

 clypeus closely punctured; the apex obliquely depressed, 

 smooth ; the front and vertex impunctate, smooth, shining. 

 Thorax luteous; the mesonotum from shortly before the 

 base of the tegulse to the base of the scutellum black ; in 

 the middle are two oblique yellow marks, which are tri- 

 angular at the base, rounded at the apex ; at the base the 

 black is slightly and roundly dilated at the sides. Scutellum 

 pyramidal, the apex oblique ; the leaf-like expansions 

 on the sides large, thin. The keels bordering the 

 lateral arese stout ; the areae for the greater part black ; 

 the middle at the base distinctly depressed ; across the 

 middle of the segment is a curved keel, which is united at 

 the sides to the keels of the basal arese. Pleurae very 

 smooth, shining ; the sternum punctured ; at the apex of the 

 mesosternum is a large leaf-like expansion, triangularly 

 narrowed towards the apex, which, in the middle, is slightly 

 and roundly incised. The middle keel on the metapleurae 

 well defined. Legs stout ; the tarsal claws and the hinder 

 knees black. Areolet small ; the transverse cubital 

 nervures united at the top, almost appendiculated. On 

 the petiole there is a broad transverse mark, at the end of 

 the depression ; on the third segment is a fusco-black 

 mark ; the apex narrowed ; the base curved on either 

 side and ending on the lower side in a sharp point; on the 

 fourth is a small black dot on either side ; on the fifth is 

 a similar mark to that on the third, but smaller ; there is 

 an elongated mark on the sides of the sixth ; on the pen- 

 ultimate is a large, transverse mark. The petiole is 

 impunctate ; the base broadly depressed, the sides of the 

 depression sharply carinate ; on the apex in the middle, 

 reaching to the transverse line is a conical depression; the 

 other segments are closely and rather strongly punctured ; 

 the transverse depressions longitudinally striated. 



