502 Transactions South African Philosopliical Society, [vol. xii. 



longed behind into a bluntly triangular depression ; scutelluin slightly 

 carinate longitudinally in the median part, not impressed transversely 

 at the base which is punctulate ; elytra convex, and having l:)esides 

 the juxta-sutural stria two dorsal fairly well-defined ones corre- 

 sponding to the third and fifth, while the two intermediate ones show 

 faintly only, the sides are strongly and irregularly punctate and some- 

 what coriaceous, while in the dorsal part there are some shallow, 

 slightly seriate punctures in the striae and in some of the intervals. 

 In the smaller development the cephalic horn is small, the excavation 

 is deep, but the walls are not raised, but slightly sinuate in the 

 upper part towards the middle, and very sloping in the anterior 

 part ; it is this small development that I described under the name 

 of 0. mashunus ; the metasternum has a lozenge-shaped impression 

 with a median longitudinal line ; the valves of the penis are some- 

 what different from those of the other species, being longer, slightly 

 concave inwardly near the base, while the outer margin is more 

 arcuate, and the apical outer margin sharply aculeate, nearly perpen- 

 dicular, and very sharp at tip. 



Length 11-11|- mm. ; width 6f-7 mm. 



Hah. Southern Rhodesia (Salisbur}^), Mozambique (Tette). 



Okphnus ovampoanus, Pering., 

 Trans. Entom. Soc. Lond., 1896, p. 158. 



Male : The description of the small development of 0. hilohus- 

 almost exactly suits this species, except that the walls of the pro- 

 thoracic cavity, which are also not much raised, abut very closely 

 on the apical margin, and that the cavity itself reaches only to the 

 median part of the disk, the posterior part being closely punctate ; it 

 is also much smaller, and the striae on the elytra, with the exception 

 of the juxta-sutural one, are obliterated or hardly discernible ; 

 the valves of the penis are more slender, not so deeply arcuate 

 outwardly, and with the forcipate part very much less angular, 

 and nearly straight from the angle to the tip. 



Female not known with certainty. 



Length 7 mm. ; wddth 4 mm. 



Hah. Ovampoland. 



Orphnus zambesianus, Pering., 

 Plate XXXVL, fig. 31 ; Plate XXXIX., fig. 37. 

 Trans. Entom. Soc. Lond., 1896, p. 157. 

 Male : Brick-red, or piceous red, shining; head fuscous, very finely 



