484 Transactions South African Fliilosophical Society. Tvol. xii. 



BOLBOCERAS CAPENSE, Klug', 



Plate XXXVI., figs. 16 and 17 ; Plate XXXIX., fig. 4. 

 Abhandl. Berl. Acad., 1843, Monog., p. 49. 

 5 B. hatcsi, Dist. Natur. in Transv., p. 191, pi. i., fig. 5. 



Male : Sub-ferruginous red, shining, head darker ; labrum emar- 

 ginate, head roughly punctured, nearly scrobiculate, clypeus truncate 

 at tip, obliquely attenuate laterally, strongly carinate and with the 

 basal angle produced into a distinct, sharp tooth, at the very apex 

 there is an aculeate, median tubercle ; pro thorax with the anterior 

 part retuse, tri-impressed at the top of the declivity where the im- 

 pi'essions are divided by four rounded, callose prominences the two 

 median ones of which are more developed than the lateral, the apical 

 margin is strongly sinuate, but not recurved, and the anterior and 

 lateral parts are very closely punctate, the punctures are more 

 scattered in the middle of the posterior part which has a very 

 distinct median, longitudinal groove reaching close to the basal 

 margin ; elytra punctato-striate, the punctures are deep and closely 

 set, and the eighth reaches the humeral callus ; intervals irapunctate ; 

 scutellum very closely and deeply punctate ; under side and legs 

 densely pubescent ; anterior tibiae six-dentate. 



It is seldom that the thoracic impressions of the male are as much 

 developed as in the figure given ; the normal shape is more like 

 that of the female as given in figure 17. 



Female : Facies of the male, from which it is easily distinguished 

 by having a small marginal tubercle at the apex of the clypeus and 

 two more developed ones close to the median part of the head and 

 not in a line with the aculeate basal angles ; the prothorax is slightly 

 tri-impressed, usually a little less deeply than even in the normal 

 males. 



Length 11-13 mm. ; width 6-8^ mm. 



Hah. Natal (Durban, Frere), Mozambique (Lourengo-Marquez), 

 Cape Colony (Knysna). 



Herr H. Kolbe has kindly compared my examples with King's 

 type. 



BoLBOCERAS CAFFRUil', Bohflll., 



Plate XXXVI., fig. 24. 

 Insect. Caffrar., ii., p. 371. 



Male : Ferruginous red, infuscate on the head and prothorax, but 

 occasionally brick-red ; labrum slightly emarginate, and with a dis- 



