108 Transactions of the South African Philosophical Society. 



11. { 6 ) Elytra ad basin evidenter sinuata et tuberculis quatuor supra thoracis 



basin projectis armata. 



12. (13) Prothorax lateribus rotundato-ampliatis, indumento rubro ornata ; elytra 



humeris rotundatis, tuberculis basalibus rubris. . 9. B. occlusus, Pasc. 



13. (12) Prothorax lateribus fere parallelis, squamis flavis ornata ; elytra humeris 



acute angulatis 10. i?. prccmorsus, Thb. 



14. ( 5 ) Coxae medige separatee. 



15. (16) Elytra in singulo carina dorsali elevata ab humero usque ad apicem 



continuata, disco postice fortiter compresso.. 4. B. carinatus, sp. nov. 



16. (15) Elytra carina dorsali ad summam declivitatem semper terminata. 



17. (20) Prothorax non sulcata ; elytra humeris non lateraliter extensis. 



18. (19) Prothorax non tuberculata, profunde in medio punctata, lateribus levibus ; 



elytra humeris rotundatis, lateribus simplicibus, postice gradatim 

 angustata, carina dorsali obtusa nee cum carina externa ad declivitatem 

 connexa 3. B. Iceingatiis, si^. noY. 



19. (18) Prothorax rugosa, tuberculis parvis parce obsita ; elytra humeris fere 



rectangulatis, lateribus crenelatis et subparallelis, carina dorsali acute 

 elevata et cum carina externa ad declivitatem connexa. 



11. B. pumilus, sp. nov. 



20. (17) Prothorax profunde trisulcata, sulcis externis obliquis antice convergen- 



tibus ; elytra humeris lateraliter extensis . . 12. B. flexuosns, sp. nov. 



1. Bkotheus binodosus, sp. nov. 

 Plate VI., fig. 11. 



Long. 7J; lat. 5 mm. 



Colour uniform earthy-brown with remote small black spots ; 

 setse practically absent. 



Read quite smooth, impunctate and evenly continuous with the 

 rostrum. Prothorax transverse, its sides strongly rounded, broadest 

 far behind middle, rapidly narrowed anteriorly and with a distinct 

 apical construction, the base much broader than the apex and 

 bisinuate ; upper surface convex and almost smooth, the structure 

 being concealed by the dense scaling, gently declivous anteriorly and 

 with a shallow transverse impression near apex, but without distinct 

 fovese; the black spots small but fairly numerous ; sides impunctate. 

 Elytra oblong, the basal margin gently trisinuate and not broader 

 than the base of the prothorax, shoulders not prominent, very 

 oblique, sides subparallel to the declivity, which is very steep, but 

 round dorsally ; upper surface convex, with large shallow irregular 

 punctures and each with three rows of small rounded tubercles, 

 which are slightly larger towards the declivity ; only the outer row 

 reaches the apex, and at the extreme base of the elytra there are two 

 larger bluntly conical tubercles projecting slightly forwards ; nearly 

 all the tubercles have a black spot on the posterior side, and there 

 are two rows of spots down the middle of the declivity and three 

 uneven rows along the infiexed margins. Legs with dense brown 

 scaling, small black spots and sparse black setse ; inner angle 



