640 Transactions South African Philosophical Society, [vol. xiii. 



Closely allied to B. damarinum ; the excavation of the prothorax 

 is nearly alike, but the sides are scrobiculate in B. damarinum, 

 which species B. faustum should follow. 



Hab. Cape Colony (Vryburg) ; Transvaal (Lydenburg), Southern 

 Ehodesia (Plumtree). 



In the smaller development, and in the female, the anterior depres- 

 sion is less marked, and the two lateral tubercles and the two above 

 them are not greatly developed. 



BOLBOCERAS HEBES, n. Sp. 



Brick-red, shiny, glabrous on the upper side, very densely 

 pubescent underneath, the pubescence is long and light fulvescent ; 

 antennae yellow ; labrum arcuate, long, followed by a highly raised 

 ridge reaching from side to side, slightly more raised in the centre 

 than at the sides which are angular, the sinus in front of the gense 

 triangular and highly reflexed, in the centre of the frontal part is a 

 sub-tridentate highly raised lamina, the whole surface is scrobiculate 

 punctate ; prothorax with a transverse impression set at a short 

 distance from the apex, extending across the median part, and 

 bounded behind by a rounded, smooth, little raised, arcuate wall 

 bearing two small tubercles somewhat distant from each other in 

 the middle, the part behind that smooth elevation is transversely 

 depressed and set slightly below the level of the basal part which 

 is smooth along the median part, while the middle of the disk, 

 including the anterior depression, is deeply and somewhat closely 

 punctate and the sides scrobiculate foveate ; scutellum smooth, 

 impunctate ; elytra a little longer than the prothorax, finely 

 punctulate striate, intervals smooth ; anterior tibiae sharply five- 

 dentate. 



Length 11 mm. ; width 8 mm. 



Hab, Cape Colony (Colesberg). 



BOLBOCERAS DISPARILE, 11. sp. 



Female : Brick-red with the head and the greatest part of the 

 prothorax deep fuscous ; antennae flavous, clothed underneath with 

 a long and very dense light fulvous pubescence ; labrum nearly 

 straight, carinulate, anterior margin of clypeus carinate, anterior 

 frontal part with a short, triangular median tubercle in a line with 

 the base of the ocular canthus, which said angles are dentate tuber- 

 culate, apex simple, head scrobiculate on the clypeus and the gena?, 

 the space behind the median tubercle is very roughly punctate, but 

 the punctures on the posterior part are round and remote; prothorax 



