162 
Annals of the Transvaal Museum. 
punctured ; the mesopleurae more deeply and strongly punctured than 
the mesonotum ; the metanotum sparsely punctured at the base, more 
strongly and closely at the ape-x ; post-scutellum short above, crenulated, 
the apex with a steep slope and strongly punctured ; there are two keels 
down the centre of the mesonotum ; they converge towards the apex, 
and are more distant from the base than from the apex. 
The male is similarly coloured, except that the clypeus is yellow, is a 
little longer than wide and has a rounded incision ; there is a more distinct 
black mark on the base of the abdomen ; it is obliquely narrowed behind. 
Rhynchium fallax Saus. 
Vespides, iii, 175. 
Pretoria. January. 
Saussure says that the sides of the metathorax are armed with three 
spines, which is the case with the above recorded example ; but above the 
three are two shorter ones united at the base, followed by two short stumpy 
tubercles ; the upper two of the three are of the same size, but the second 
is thicker ; the lower one is shorter ; there is a slight depression on the 
apex of the scutellum in the centre ; apex of post-scutellum broadly rounded 
Rhynchium transvaalense, sp. n. 
Black ; the antennae, the head except the stemmaticum, an irregular 
mark below it, a spot outside the upper edge of the eye incision, prothorax, 
the sides and apex of the scutellum, post-scutellum, metathorax, the 
upper half and the lower third of the apex of mesopleurae, the last 
abdominal segment, the basal ventral, the tegulae and legs, red ; wings 
hyaline, slightly tinged with yellow in front to near the parastigma, fuscous- 
violaceous beyond. Female. 
Length, 17 mm. 
Waterval. January. 
Clypeus pyriform, slightly longer than wide ; the apex depressed, 
margined by keels, transverse, sparsely, weakly punctured ; prothorax 
distinctly punctured, the punctures clearly separated ; the basal half of 
the mesonotum weakly, sparsely punctured ; the rest and the scutellum 
smooth ; the base of the post-scutellum smooth ; the rest coarsely 
punctured, the apex with a steep slope ; the sides of the metanotum are 
smooth at the base, the rest rather strongly punctured, the punctures 
round and clearly separated, intermixed with striae on the innerside ; 
the apex on the outerside is armed with three short stout teeth ; meso- 
pleurae strongly, closely punctured, the metapleurae much more weakly 
and sparsely punctured ; abdomen punctured, the middle segments more 
strongly and closely than the others. 
Rhynchium marginiscutis , sp. n. 
Black ; the antennae except the apical three joints above, the head 
except a squarish mark incised in the middle below, and the occiput, the 
prothorax, tegulae, apical fourth of scutellum, post-scutellum, metathorax, 
upper half and apex of mesopleurae and legs, red ; the basal and apical 
segments of the abdomen and more or less of the ventral surface of a- 
