330 Transactions South African PhilosopJiical Society, [vol. xii. 



the declivous part is short, the upper edge is sUghtly eniarginate 

 in the centre, there is no deep lateral impression in front, and the 

 edge of the carina is situated in front of the lateral fossa ; the head 

 and prothorax are fringed with dense rufous hairs ; elytra with a 

 sub-basal carina, gibbose in the anterior part, strongly sloping 

 behind, strongly callose at base on the fifth and sixth intervals, 

 striate with the striae punctulate and the intervals finely plicate 

 diagonally, the supra-marginal carina is very conspicuous, reaching 

 from the base to a very short distance from the rounding of the 

 apical part, this carina is more developed than the marginal one, 

 and very distinctly sinuate under the humeral callus ; under side 

 deeply and closely punctured, and clothed with long rufous hairs. 



Length 41-46 mm. ; width 25-29 mm. 



Hab. Damaraland ; Ovampoland (Evari Eiver, Omrramba). 



Cathaesius disseptus, n. spec. 



Black, shining. 



Male : Clypeus semicircular but somewhat distinctly emargi- 

 nate in the centre, a little sinuate on each side of the median 

 emargination, and also a little emarginate laterally at the junction 

 with the genae, the whole head is covered with elongate foveae 

 divided by short, transverse folds, except the genae which are 

 granular, in the centre is a short, vertical, conical tooth 2 mm. high 

 in the large development, broadly triangular at base and rugose 

 except near the tip ; the prothorax is nearly vertical in front, the 

 apical part of the declivity is not sharp in the centre which is deeply 

 emarginate, but it is distinctly sinuate laterally, and ends in a 

 distinct although not much raised carina interrupted in front of, 

 but above the lateral round impression, beneath this apical lateral 

 carina, and running parallel to it, is another transverse, sinuate 

 carina deeply emarginate, sometimes interrupted at middle, and 

 enclosing with the apical ridge a shallow furrow about 3-|- mm. wide 

 and IJ mm. broad, the posterior part is deeply furrowed longitu- 

 dinally in the middle, the whole surface is closely granulate, but there 

 is on each side of the discoidal longitudinal furrow a very con- 

 spicuous transverse triangular smooth space ; elytra sub-gibbose at 

 middle, punctato-striate, eighth stria carinate from the base to one- 

 thi]sd of the length. 



Female : Clypeus semicircular and emarginate like that of the 

 male, but not so broad, the head has a very short, triangular tooth, 

 scarcely O'f mm. high, the sculpture is nearly the same, except 

 that the short transverse folds dividing the elongate foveae are less 



