Annals of the Transvaal Museum. 
199 
former ; the apex of the mesonotum longitudinally striated. Apex of 
mesopleurae closely finely striated, the centre smooth and shining. Basal 
segment of abdomen closely longitudinally striated and punctured, the 
striae more distinct on the apex ; the sculpture on the second is almost 
similar, the third is closely weakly punctured ; the second furrow is 
weakly crenulated. The pubescence is short, dense, and white. 
Rhogas striatifrons, sp. n. 
Testaceous ; the antennae darker coloured on the apical half, the 
tips of mandibles, the stemmaticum and the greater part of the apical 
joint of the tarsi black ; wings clear hyaline, highly iridescent, the costa, 
nervures, and stigma pallid testaceous ; basal abscissa of radius half the 
length of the second, the second cubital cellule of equal width, one-fourth 
longer along the radius than along the transverse cubitals. Basal three 
segments of abdomen closely, distinctly striated, the first more strongly 
on the sides and in the centre ; the keels are not clearly defined. Male. 
Length, 6 mm. 
Pretoria. August. 
Temples slightly rounded, distinctly obliquely narrowed. Head and 
thorax finely, closely punctured, the front distinctly striated, the striae on 
the sides obliquely sloped. There is a striated belt on the basal half of the 
pronotum. The apex of the hind femora is infuscated. 
Rhogas transvaalensis, sp. n. 
R.ufo-testaceous ; the legs much paler than the body, the basal third 
of the antennae dark testaceous, the rest black, the metanotum and basal 
segment of the abdomen infuscated ; wings clear hyaline, the stigma with 
the basal half white, the apical pallid fuscous, the nervures pale testaceous, 
the second cubital cellule not quite twice longer than wide, the first abscissa 
of the radius about one-third of the length of the second. Metanotum 
obscurely transversely striated, the keel distinct. Basal two abdominal 
segments obscurely, finely striated, the keel on the first distinct, but not 
so stout as that on the metanotum, that on the second is weaker. Temples 
broadly, roundly narrowed, the occiput transverse. Male. 
Length, 4 mm. 
Rietfontein No. 57 (Pretoria District). August. Warmberg (Zoutpaus- 
berg District). April. 
The apex of the mesonotum is irregularly longitudinally striated. 
Pleurae more strongly shagreened than the mesonotum. Parapsidal furrows 
indicated on basal slope only. 
Doryctini. 
Xenolobus, gen. n. 
Wings with three cubital cellules, the second not half the length of 
the third, wider along the radius than along the cubitus ; the radial cellule 
long, reaching to the apex of the wing, the radius issuing from the basal 
third of the stigma ; the recurrent and anal nervures interstitial ; the 
transverse median nervure received not far from the centre. Base of 
metanotum with two large raised coloured lobes, narrowed and rounded 
