Manchester Memoirs, Vol. xliii. (1899), No. 3. 37 



the middle. Wings large, hyaline, a large, dark smoky- 

 cloud between the base and apex of the stigma and ex- 

 tending into the discoidal cellule ; the radial nervure is 

 received shortly beyond the middle of the cellule ; the 

 recurrents in the basal thirds, as is also the transverse 

 median. Legs black, covered with white hair ; all the 

 coxae and trochanters, the apex of the anterior femora 

 and the base of the tibiae in front and the basal half of 

 the hinder tibiae, the apex of the first broadly and the 

 second joint of the hinder tarsi, white; the spurs short, 

 not one-fourth of the length of the metatarsus, which 

 is longer than the succeeding joints united ; the claws 

 are bifid. Abdomen as long as the head and thorax 

 united, black ; the second segment white; the basal seg- 

 ment has a metallic-blue tinge. 



BUSARBIA, gen. nov. 



Antennae nine-jointed, long, filiform, the third and fourth 

 joints equal in length; eyes parallel, not reaching to the 

 base of the mandibles. Mandibles large, their apical tooth 

 long. Apex of the clypeus roundly incised, oblique. The 

 frontal area large, transverse at the apex, rounded and 

 slightly narrowed at the base, where it encloses the anterior 

 ocellus ; the keels bounding it are large, acute, and from 

 their apices at the sides a keel unites them to the eyes ; the 

 front is raised above the antennae, the raised part obliquely 

 depressed at the top. Occiput not margined. Wings 

 with two radial and four cubital cellules ; the lanceo- 

 late cellule open, without a cross nervure ; the hinder 

 wings with two cubital cellules, the accessory nervure 

 appendiculated, the basal nervure is received distinctly in 

 front of the cubital, as in Tenthredo. Legs moderately 

 slender, the claws unequally bifid ; the calcaria short, not 

 one-fourth of the length of the metatarsus, 



C 



