Manchester Memoirs, Vol. xliii. (1899), No. 3. 85 



hair; Ihe hair on the clypeus longer and darker; the 

 mandibular teeth black ; the palpi thickly covered with 

 long, pale hair ; the face shagreened ; the front before the 

 ocelli broadly and deeply and semi-circularly depressed. 

 Thorax shining, above covered thickly with short fuscous, 

 the sides with pale fulvous, pubescence ; the middle lobe 

 of the mesonotum depressed and triangularly produced 

 behind ; the base raised, strongly punctured ; its middle 

 distinctly raised and almost impunctate. At the base 

 of the scutellum is a broad, deep depression having a stout 

 keel in the middle at the base ; the post-scutellum de- 

 pressed ; its sides stoutly keeled. The base of the median 

 segment is sharply depressed ; oblique, stoutly keeled in 

 the middle, this keel, at the top, dilating into a somewhat 

 heart-shaped area, the broad end being at the apex ; and 

 from it two stout keels run to the apex of the segment 

 where they converge, but do not unite ; the sides outside 

 the spiracles are stoutly keeled ; the outer keel being 

 joined at its apex by a curved one of similar size which 

 proceeds from the basal keel on the inner side of the 

 spiracles, these being thus enclosed ; at the apex of this, 

 and united to it, is a stout L-shaped keel, from which two 

 stout keels run to the apex of the segment. The pro- and 

 meso-pleurse are smooth, impunctate ; the apex of the 

 propleurae crenulated on the lower half; the lower part of 

 the mesopleurae is broadly depressed ; the depression 

 having stout semi-oblique keels, which are stouter and 

 more widely separated posteriorly. Legs thickly covered 

 with short, fulvous hair ; the four anterior have a lighter, 

 more yellowish tint than the posterior ; the apex of the 

 hinder tibiae, the hinder tarsi, and all the claws, black. 

 Wings yellowish, the apex slightly infuscated ; in front of 

 the stigma is a black cloud, longer than broad, and with 

 the sides and apex irregular ; the part of the costa from 

 F 



