362 Transactions South African Pliilosophical Society, [vol. xii. 



prothorax broadly and deeply excavated in the centre from apex to 

 base, and with the walls of the excavation forming a sub-triangular 

 longitudinal ridge on each side, the surface is covered with deep, 

 closely set punctures ; elytra convex but somewhat elongate, very 

 distinctly striate, and with the intervals plane and covered with 

 very closely set and deep punctures. 



Female : Black, sub-opaque on the upper side ; head as in the 

 male, the cephalic horn is small, like that of the male in shape, 

 but instead of having behind a hamate tooth at base there is a very 

 short sharp tubercle at a short distance from it ; the prothorax has 

 a sub-ovate very shallow median depression in the anterior part, but 

 this impression is never conspicuous, and oftener than not is nearly 

 obsolete ; elytra as in the male and with similar punctures. 



Length 16-18 mm. ; width 9-10 mm. 



Hah. Cape Colony (Cape Town, Stellenbosch, Worcester, Port 

 St. John). 



Voet (Coleopt., pi. xxiii., fig. 6) has given a fairly accurate figure of 

 this insect, which Gemminger and Harold in their Catalogue refer 

 to C. ccelatus, Fabric, Ent. Syst. Append., iv., p. 435, but Harold in 

 his description of C. ritsemce, published six years after the Catalogue, 

 compares this species to C. ccslatus, but mentions two lateral horns 

 on the prothorax, as well as a median truncate emarginate lobe ; 

 these features are entirely wanting in C. i^lutus. 



CoPKis MESACANTHUS, Har., 



Plate XXXIII., figs. 7, la. 



Mitt. d. Mlinch. Ent. Ver., 1878, p. 45. 



Black, sub-opaque on the prothorax, elytra opaque. 



Male : Shape of the head similar to that of C. ijlutits, but instead 

 of the clypeus being smooth in the anterior part, it is closely punc- 

 tured, the horn in the large development is much longer, reaching 

 a length of 7 mm., it is not so much curved and the hook instead of 

 being at the base is situated at about half the length ; the prothorax 

 is broadly and deeply excavated in the middle from apex to base, 

 with the walls of the excavation longitudinally triangular on each 

 side, the excavation in the large development is 4 mm. in width 

 and the walls are 2 J mm. in height and nearly vertical in front, but 

 in the small development they are reduced to a mere sinuate ridge 

 on each side of a median depression, and even disappear entirely, in 

 which case the depression is hardly noticeable ; the surface is 



