116 South African Beetles. 
PENTAGONICA ANTENNATA, Sp. nov. 
Head fulvescent ; prothorax, mouth-parts and legs flavus; antenne 
(excepting the first four joints which are pitchy brown) very pale 
flavescent. Elytra pale fuscous brown with the outer margins broadly 
flavescent. Prosternum and pectus flavus ; abdomen brownish. 
Size and sculpture almost identical with that of P. o’nezli, but the 
prothorax is broader and a little more sinuate below the outer basal 
angles. The elytra also are shorter giving it a more quadrate 
appearance. he narrow space at base below the median line of the 
prothorax, as well as the scutellum and immediately round it, is 
coarsely punctured. In P. o’neili these parts are nearly smooth. The 
most distinctive feature of this species, however, is the sharp contrast 
between the pitchy first four joints and the yellowish-white of the 
succeeding joints of the antenne. 
Length 44 mm. Width 2 mm. 
Hab. Malvern, Natal. A single example found on the bark of a 
fallen tree on 19th October, 1913. 
ORTHOGONIUS DUBIUS, sp. nov. 
Head, prothorax and elytra piceous red; the prothorax a shade 
redder than head and elytra. Palpi, first three joints of antenna, 
legs, pygidium and beneath of a rich chestnut red. Terminal joints 
of antennz piceous and pubescent. Head finely transversely plicate. 
Prothorax gently rounded from apical angle to above middle, thence 
nearly straight to basal angle, which is moderately sharp and narrowly 
recurved. Sparsely punctulate and rugosely plicate over the whole 
disc and with a shallow median groove. Elytra elongate; four times 
as long as the prothorax ; shoulders squarely rounded, twice as wide 
as the prothorax at base, deeply striate, very faintly punctulate with 
the intervals carinate. Both intermediate and posterior tibiz 
straight and slender as in O. capucinus, Boh. 
Length 164 mm. Width 7 mm. 
Hab. Salisbury, Rhodesia. 
Evidently a near ally of O. emulus, Pér., with the description of 
which it agrees in most respects, but the posterior tibiz are not in the 
least incurved. The four examples before me show no variation in size. 
Dr. Péringuey states of this genus that the fourth tarsal joint of 
the anterior tarsi are bilobate. This is evidently an error, as none of 
those in my possession, i.e., O. caffer, Boh., O. brevicornis, O. capucinus, 
and the present species, show anything more than broad incisions. 
