44 Transactions South African Philosophical Society. [Vou. Xut. 
TROCHALUS VAGUS, 0. spec., 
Plate XLVLI., fig. 31. 
Reddish, metallic, shining, or clothed with a _ sub-opaque 
moderately iridescent indumentum; antenne flavous; body 
ampliato-ovate, convex; clypeus narrowed in the anterior part 
where it is straight laterally, thence broadly ampliated, with the 
upper margin strongly sinuate next to the terminal part of 
the frontal keel, and barely reaching the depression of the anterior 
part which is strongly reflexed, with the outer angles moderately 
sharp and the median part plainly dentate, the clypeal median 
iongitudinal keel is long, the frontal keel high, and at a short 
distance from the base there is a transverse groove reaching the 
hind part of the eyes, and deeper in the male than in the female; 
the clypeus is sparsely punctate, the punctures on the frontal part 
more numerous and therefore much more closely set; prothorax 
eradually ampliated from the anterior to the posterior angles the 
latter of which is sharp, it is twice as broad as long, deeply punctate 
with the punctures separated by an interval nearly equal to that of 
their own diameter ; scutellum very long, sharply triangular, closely 
punctate ; elytra somewhat ampliated laterally in the middle, convex 
in the anterior part, weakly striate in the dorsal, the stria numbering 
five or six on each side, the intervals have the same punctuation as 
the prothorax, and very few and very short sete near the humeral 
part only of the outer margin; the convex pygidium is very deeply 
punctate, and briefly setulose along the margin; the under side is 
almost glabrous, except for the villose femora, the abdominal 
segments are very deeply and numerously punctate, and the 
trochanters of the anterior tibie are very broadly dilated, and 
the anterior tibie bi-dentate. The shape of the genital armature 
of the male is almost identical with that of 7. byrrhanus (pl. xlvi., 
fig. 31) when seen sideways, but the forceps-like clasps enclose a 
wider space if seen from above. 
Length 7-8 mm.; width 5-6 mm. 
Hab. Southern Rhodesia (Salisbury). 
TROCHALUS DAMARUS, 0. spec. 
Elongato-ovate, convex, chestnut-brown, shiny, faintly iridescent, 
antenne flavous; very closely allied in general appearance to 
T. badius, but easily distinguished by the transverse impression 
along the base of the head; it is plainly allied to T. vagus, but 
whereas in that species the lateral margins of the clypeus reach 
