148 
Annals of the Transvaal Museum, 
upwards, the top transverse ; a three-pronged mark above the face on the 
front, its base broad, large, the central line longer, narrower, and 
straighter than the others, the greater part of the scutellum, and post- 
scutellum, whitish-yellow ; a broad mark on the outer apical third of the 
first abdominal segment wider transversely than longitudinally ; the 
sides of the second, the mark narrowed to a small square at the base, 
clearly separated | from this it becomes gradually, roundly widened to 
the apex ; a broad transverse mark, rounded at the base, on the third 
and fourth, the third united by a narrow line along the apices of the 
segments ; the apical segments and the second and following ventral 
segments, except for brownish lines on the apices, bright orange-yellow ; 
the antennal scape below ; the malar space ; the outer orbits entirely 
below, more broadly above ; the line continued along the vertex to near 
the outer ocelli ; the line separated from the eyes on the upper half ; the 
tegulae, a narrow line on the apex of the first abdominal segment ; the 
second broadly in the middle, more narrowly on the outer side, where it 
separates the black in two, red; four front legs red, the middle tibiae 
yellow ; the hind coxae, trochanters, and femora black ; the tibiae yellow ; 
the tarsi pale red ; wings hyaline ; the apex narrowly and slightly smoky ; 
the costa, stigma, and nervures pale testaceous; the second abscissa of 
the radius shorter than the first and one-half the length of the third ; the 
first recurrent nervure is received very shortly before the middle of the 
cellule. Male. 
Length, 8-9 mm. 
Densely covered with a short white pile; closely, rather strongly, 
punctured, the clypeus much more weakly than the rest ; apex of clypeus 
transverse ; area on metanotum large, opaque, punctured like the other 
parts ; the bounding furrows weakly indicated, and there is a shallow, 
indistinct furrow down the middle ; base of metapleurae aciculated, the 
rest closely reticulated ; the head is less closely punctured than the thorax, 
and the abdomen not so closely as the latter. 
This species may be separated from the known South African forms 
by the transverse apex of the clypeus. 
Cerceris Latr. 
Cerceris erythrospila, sp. n. 
Black ; the underside of the antennal scape, a band on the apex of 
the third abdominal segment, narrowed in the middle, laterally occupying 
the half of the segment, and the sixth, except at the sides, yellow ; the 
underside of the antennal flagellum, mandibles except the teeth, tegulae, 
the sides and the apex, more widely of the first abdominal segment, and 
the greater part of the four hinder coxae, rufous ; the four front tibiae 
anteriority and the tarsi pale yellow ; the apical joints of the four anterior 
tarsi tinged with rufous ; the hinder tarsi black, except the basal three- 
fourths of the basal joint; wings hyaline; the apex with a smoky violaceous 
cloud at the apex of the radius and more broadly beyond the apex of the 
