1900.] Catalogue of the ColeojJtera of South Africa. 337 



in height, the whole being a reduction of tlie longer process, but 

 owing to its being so short, it does not recline backwards against the 

 prothorax ; in some examples, which I shall term the smallest 

 development, this transverse carina is reduced to a mere raised line 

 uniting the genae transversely, and produced in the middle into a very 

 short triangular median point hardly 1 mm. in height ; in both these 

 developments the prothorax is not deeply scooped out in the middle 

 and bears a moderately sharp, triangular tubercle on each side of 

 the excavation. 



Female : Head shaped as in the male, and having in the centre a 

 conical tooth, the base of which extends as far as the suture of the 

 genae on each side ; this conical tooth is about 2 mm. high, and 

 resembles that of the smallest male development, except that there 

 is no trace of the transverse basal carina ; the prothorax is not 

 excavated in the middle, but the two tubercles are very well defined 

 and situated a little more forward, they are also set more closely 

 to each other, and the grooved line in the posterior part of the disk 

 is deeper ; elytra and legs as in the male. 

 ^ Length 23-28 mm. ; width 14-16 mm. 



Boheman's description* was made from a female example. 



Hab. Natal (Estcourt, Durban), Transvaal (Boksburg, Lyden- 

 burg). Southern Rhodesia (Buluwayo, Salisbury). 



. Cathaksius marcellus, Kolbe, 

 Sitz.-Bericht. d. Ges. Naturf. Freunde, 1893, p. 142. 



Black, shining, especially the elytra, sides of the prothorax 

 slightly dull. 



Male : Clypeus very oblique and with an arcuate emargination at 

 the tip the angles of which, however, although prominent, are not 

 recurved ; the head and clypeus, except the genae which are 

 granulose, are covered with transverse, closely set folds extending 

 also on the anterior side of the cephalic horn which is a little 

 higher than the apical part of the prothorax, broadly laminate for 

 two-thirds of the length, directed backwards and narrowed from 

 there into a rounded, somewhat styliform process, curving forward; 

 the prothorax is sub-vertical in front, has there a broad, sub-quadrate 

 impression surmounted at apex by two short tubercles standing at 

 a great distance from one another, the dorsal part is sub-gibbose 

 and has a deep, median longitudinal sulcus, the surface is covered 

 with very distinct and closely-set granules, but the anterior im- 

 pression is smooth ; elytra deeply striate, with the striae slightly 



22 



