Annals of the Transvaal Museum. 
197 
palpi vary in colour from black to fuscous. First abscissa of radius not 
balf the length of the second ; the second cubital cellule of equal width 
throughout, about one-fourth longer along the radius than along the 
transverse cubitals. The colouration of the tarsi and the palpi varies, 
the latter from black to fuscous. 
Rhogas melanospilus, sp. n. 
Head, thorax, and abdomen except the apical third of the first 
segment, the second except the sides, and the third except the sides and 
apex, which are pale yellow, rufo- testaceous ; the antennae blackish, 
except the basal three-fourths of the scape ; the stemmaticum, the basal 
three-fourths of the mesopleurae broadly above, the post-scutellum and the 
part bordering it, and the metathorax except the apex below, black ; the 
rufous colour on the base of the first abdominal segment is largely tinged 
with black ; wings clear hyaline, iridescent, the costa and stigma pallid 
yellow, darker towards the apex ; the second cubital cellule is narrowed 
towards the apex. Metanotum finely, closely, transversely striated, the 
central keel distinct, as it is also on the first abdominal segment. Male. 
Length, 4 mm. 
Rietfontein No. 57 (Pretoria District). September. 
Temples distinctly, obliquely, roundly narrowed ; the occiput not 
transverse. Head, pro- and mesothorax shagreened, covered with a white 
pubescence, the lower part of the propleurae obscurely striated, the apex 
of the mesonotum more strongly longitudinally striated. Palpi long, 
pallid yellow. The abdomen is smooth, except the basal segment. 
Rhogas plurilineatus, sp. n. 
Testaceous, the stemmaticum, face, the greater part of the clypeus, 
the greater part of the outer orbits, the pleurae above, the meso- more 
broadly than the pro-pleurse and the latter than the meta-pleurae, the 
antennae dark rufous, darker towards the apex ; the sides of the basal 
two abdominal segments and the whole of the others tinged with rufous ; 
legs coloured like the body, but paler, the apex of the hind femora slightly, 
the apical fourth of the middle, the apical half of the posterior and the 
end joint of the tarsi, black. Wings clear hyaline, the stigma pale tes- 
taceous, the nervures darker, almost black ; the basal abscissa of radius 
one-third of the length of the second ; the second cubital cellule almost 
twice longer than wide ; the basal abscissa of radius roundly curved towards 
the costa. Basal three segments of the abdomen closely, distinctly striated, 
the third with the apex smooth. The front immediately below the ocelli 
is strongly transversely striated ; the hollowed lateral part is blackish 
and is finely longitudinally striated. 
The amount of black on the face varies, and the red down the sides 
of the abdomen may run into black ; the black on the upper side of the 
pleurae may change to rufous. Parapsidal furrows shallow. The punc- 
turation on the head and thorax is close. The furrow at the base of the 
scutellum is strongly crenulated. Male. 
Length, 5-6 mm. 
Pretoria. December. Rietfontein No. 57 (Pretoria District). January. 
A variable species probably as regards coloration. 
