332 Transactions South African Philosophical Society, [vol. xii. 



Female : Head shaped, and sculptured as in the male, but instead 

 of bearing a short, conical tooth it has a distinct transverse lamina 

 with the angles acuminate, and a minute sharp tooth in the centre, 

 this lamina unites the two gen^e ; prothorax very little declivous in 

 the anterior part, but having a short, median transverse ridge, 

 slightly sinuate on each side, and extending to about one- third of 

 the length, the median part has a median narrowly impressed line 

 reaching from near the transverse ridge to a short distance from the 

 base where the impression broadens, the whole surface is closely 

 granular, without any smooth space in the posterior part of the 

 disk ; the elytra are as in the male. 



Length 23-27 mm. ; width 14-16 mm. 



Hah. Transvaal (Eustenburg, Lydenburg). 



Cathaesius pylades, n. spec, 

 Plate XXXIII., figs. 25, 25a ; Plate XXXIX., fig. 38. 



Black, shining. 



Male : Head semicircular, broadly but not deeply emarginate at 

 centre, genae projecting a little beyond the lateral part of clypeus, it 

 is covered with shallow fovese separated by short, transverse folds, 

 and bears near the base an erect horn, 4^ mm. long in the large 

 development, compressed and broadly triangular at base, and 

 narrowly cylindrical for half the length ; prothorax declivous in the 

 anterior part, emarginate in the centre of the apex, and having on 

 each side of the emargination a sub-lateral, conical short tooth with 

 a slight impression under it, it is very finely and closely granose, 

 and there is a median longitudinal not deeply impressed line on the 

 posterior part of the disk ; in the small development the cephalic 

 horn is very short, hardly more than If to 2 mm. high, and sharply 

 triangular ; the prothorax is hardly declivous in front, but there is 

 a slight median impression in the dorsal part, and a tiny, sub-lateral 

 tubercle ; elytra finely striate, the striae punctulate, and the intervals 

 sparsely aciculate ; eighth stria finely carinate from the base to 

 about one- quarter of the length. The shape of the forceps of the 

 armature differs from that of any other South African species {vide 

 plate xxxix., fig. 38). 



Female : Head with a very short, triangular tooth slightly 

 blunted at tip ; prothorax with a short carina 4 mm. wide in the 

 anterior part and slightly sinuate at middle, it is finely granulate 

 and has a very fine, median, longitudinal line; elytra as in the 

 male. 



