Hymenoptera from the Khasia Hills. O71 
marked by transverse keels. Scutellum smooth, its depres- 
sion black. Postscutellum deeply depressed in the middle, 
the depression bordered by stout keels ; outside is a stout 
oblique keel, followed by a similar one. Median segment 
closely reticulated; the middle keel extends to the apex; 
the bordering keels are curved outwardly at the base. 
There is a striated band on the upper part of the propleure ; 
the apex is more narrowly striated. Mesopleurz below the 
tubercles with a few perpendicular striz ; above the middle 
are four longitudinal ones, the upper being stouter than the 
lower. Metapleurz closely and strongly punctured ; below 
the spiracles is a smooth keel. Second abdominal segment 
strongly longitudinally striated on the blue part ; the third 
is much less strongly longitudinally striated; the other 
segments smooth, the ventral largely marked with yellow. 
Dimetha flavinerva, sp. n. 
Luteous ; the face yellow, the mandibular teeth, the vertex 
behind and the ocellar region, the basal third of the third, 
the fourth with slightly more than the basal half, and the 
other abdominal segments entirely, black. The four front 
legs entirely luteous, their coxe paler, more yellowish, the 
hinder pair black; the hinder legs black, the coxe, tro- 
chanters, and somewhat more than the basal half of the 
femora, rufous. Wings yellowish hyaline, the apex from the 
end of the areolet fuscous violaceous. Antenne black, 
brownish beneath, the scape yellowish. 9. 
Length 20 mm. 
Hab. Khasia. Coll. Rothney. 
Face closely punctured, the clypeus more shining and less 
closely punctured. Labrum fringed with long fulvous hair. 
Palpi fuscous and covered with short white hair. Front 
closely, almost rugosely punctured, the vertex strongly punc- 
tured ; the inner orbits sharply margined. Mesonotum dark 
rufous, closely rugosely punctured. Scutellum_ thickly 
covered with long fuscous hair; the basal depression deep, 
stoutly keeled. Postscutellum finely punctured and thickly 
covered with fuscous hair. The middle of the median segment 
is transversely striated, the rest rough, rugose, irregularly 
reticulated. Propleure striated, more coarsely and running 
into punctures above. Mesopleurze coarsely punctured, the 
lower part at the base with some stout striations. Meta- 
pleure rugosely punctured, the lower part bordered by a 
wide and deep crenulated furrow and at the apex with some 
stout oblique keels. The narrowed part of the first ahbdo- 
