Manchester Memoirs, Vol. xlii. (1898), No. 11. 35 



longer than the fourth. Head black ; alutaceous, the vertex 

 covered with a dark, microscopic down ; the front deeply 

 excavated; thickly covered with depressed, silvery pubes- 

 cence, as is also the clypeus; the frontal depression at the 

 top with a distinctly-defined margin, the centre of which, 

 looked at from beneath, is slightly curved ; the eyes on 

 the upper part on the inner side are slightly margined; 

 below the middle is a small, human-ear-shaped fovea; the 

 ocelli are in a curve. Mandibles lemon-yellow; the apex 

 piceous-black ; the basal part sparsely covered with long, 

 white hairs. Mesonotum alutaceous, thickly covered 

 with a microscopic, fuscous down ; the pronotum with 

 longer, fuscous hair; the scutellum like the mesonotum, 

 its apex with some longitudinal striae, and a thin keel runs 

 down its middle; on its base at the side is a small, and, 

 behind this, a larger, transverse yellow mark ; the post- 

 scutellum finely rugose; coarsely longitudinally striolate. 

 IMedian segment with a rounded slope; the basal area 

 clearly defined ; bearing a i^w oblique, widely separated 

 keels; those at the sides being more distinct than those in 

 the middle and extend beyond the area, outside of which 

 the segment is closely, but not very distinctly, punctured ; 

 the middle of the apical part has a wide, deep furrow. 

 The propleurae at the top have a i^w fine, indistinct striae, 

 the lower part in the centre has a few stout, longitudinal 

 striae. The tubercles are yellow; the oblique furrow 

 behind them straight, narrow; the longitudinal furrow 

 narrow, shining ; the oblique furrow on the mesopleurae 

 wide, deep, indistinctly crenulated; the apical semi-vertical 

 furrow wider, deeper, and distinctly crenulated; the meta- 

 pleurae at the base shining, strongly closely obliquely 

 striated, the rest of it finely and closely longitudinally 

 striated, the striae stronger on the lower side. Legs : the 

 apices of the coxae, of the femora, and the tibiae lemon- 

 yellow; the tibiae for the greater part black beneath ; the 



