Annals of the Tkansvaal Museum. 
157 
the apical half of the radial cellule smoky ; the stigma and nervures 
black. Male. 
Total length, 7 mm. 
Pretoria. October. 
Underside of flagellum of antennae brownish, darker at the base, 
the hook being also brown ; head and thorax closely, strongly punctured ; 
post-scutellum opaque, alutaceous, bluntly, obliquely narrowed towards 
the apex ; apex of metanotum transverse, alutaceous ; the sides rounded, 
a narrow, clearly defined furrow down the centre ; metapleurae smooth, 
pruinose ; first abdominal segment about one-third longer than it is wide 
at the apex, the basal slope oblique, alutaceous ; the second segment 
about one-half longer than it is wide at the apex, narrowed at the base ; 
the apex more strongly punctured than the rest. 
Eumenes ornativentris, sp. n. 
Black ; densely covered with white pubescence, the antennal scape, 
the flagellum except above, mandibles, clypeus, except for a black line, 
narrowed below, in the centre of the upper three-fourths ; a minute spot 
between the antennae, a slightly larger one on the top of the outer orbits, 
prothoraax, tegulae, base of post-scutellum broadly, two spots close to 
each other and placed obliquely, on the sides of the metanotum ; near 
the top, the abdominal petiole, except its basal fourth, the black there 
not extending to the outer edge, the sides of the apical two-thirds broadly, 
the black central line narrowed towards the base, 'and sharply, obliquely 
at the apex, which does not reach the end of the segment ; a large semi- 
circular mark on the basal half of the second segment ; the red continued 
as a narrow line to the apex, the apices of the third, fourth, and fifth 
broadly, the whole of the sixth, of the basal ventral ; two marks on the 
base and apex of the second, and the greater part of the others, red ; a 
narrow yellow line on the top of the first and a broader one all round on 
the second ; legs red ; the hinder trochanters and the base of the femora 
black ; wings hyaline, streaked with violaceous in front ; the stigma and 
nervures black. Female. 
Total length, 11 mm. 
Waterval. November. 
Clypeus about one-third longer than wide, its centre punctured, the 
obliquely sloped sides more finely punctured, the apex depressed, broadly, 
but not deeply roundly incised ; the furrow on metanotum wide, becoming 
gradually widened towards the apex ; first abdominal segment thick, 
about three times longer than it is wide at the apex, the basal third 
narrowed ; the second is almost twice longer than it is wide at the apex ; 
the apex is slightly reflexed and is more strongly punctured than the rest ; 
the base is roundly narrowed. 
Eumenes janseii, sp. n. 
Black ; largely marked with red and yellow ; red are the basal six 
joints of the antennae, mandibles, tegulae, legs, the first abdominal 
segment, except the base, and a pyriform black mark in the centre of the 
apex ; the second segment to near the middle, the greater part of th§ 
