Manchester Memoirs, Vol. xliii. (1899), No. 3. 61 



with fuscous hair ; the clypeus rufous ; mandibles yellow, 

 rufous before the teeth, which are black ; the palpi long, 

 pilose, fulvous-yellow. Front and vertex shining ; im- 

 punctate ; the vertex and the upper part of the front 

 broadly in the middle, black ; the ocelli surrounded by a 

 furrow, which is prolonged down the middle of the front ; 

 the occiput black in the middle, the black mark becoming 

 gradually narrowed downwards. Thorax smooth and 

 shining ; the parapsidal furrows deep and wide ; the apex of 

 the scutellum and the post-scutellum yellowish ; the median 

 segment with a furrow down its middle ; it is narrow at 

 the base, wider and deeper at the apex. Above the 

 middle of the mesopleurae is a wide and deep, slightly 

 oblique furrow which extends from the base to the apex. 

 The mesosternum has a wide and deep furrow down the 

 middle, which becomes wider and deeper at the apex. 

 Wings smoky, darker at the apex ; there is a small, 

 distinct, black cloud at the base and apex of the stigma, 

 the apical one occupying the base of the radial cellule ; 

 the stigma in the middle, between the clouds, luteous. 

 The four anterior legs uniformly rufous, the posterior 

 black ; the apex of their trochanters and the spurs luteous ; 

 the tarsi brownish beneath. Abdomen black ; fully three 

 times as long as the head and thorax united ; the basal 

 segments rough, the apical smooth in texture ; the basal 

 furrowed in the middle at the base ; the sides depressed, 

 wider at the base where they form a stout keel, which 

 becomes gradually wider ; at its base it is rufous ; the 

 raised basal part of the third segment is broader and 

 shorter, dark rufous ; the lateral depression at the base is 

 transversely striated ; the base of the third segment is flat, 

 strongly irregularly striated ; the lateral depression on the 

 fifth segment is short, only reaching to the middle of the 

 segment ; the sheaths of the ovipositor thickly covered 



