1908.] Catalogue of the Coleoptera of South Africa. 645 



the median tooth retuse ; anterior part of prothorax deeply excavate 

 on each side, the cavities shiny in part, somewhat rugose punctate, 

 anterior margin bi-sinuate, the dorsal lobe porrect, perpendicular, 

 sinuate in the middle in front, bi-partite, sub-acuminate externally, 

 the upper part of the prothorax rugose punctate, opaque, punctulate 

 in the middle, shiny, sides carinate, inner carina situate close to the 

 excavation, sub-dentate ; elytra shiny, with twelve to thirteen' striae, 

 the striae punctulate, but not much impressed, most of them obsolete 

 and abbreviated behind, the external ones geminate, the sutural stria 

 more deeply impressed, entire, the eighth and eleventh evanescent, 

 obliterated, sixth and seventh, ninth and tenth, twelfth and thirteenth 

 geminate ; anterior tibiae six-dentate outwardly. 



Length 22 mm. 



Hab. German South-west Africa." 



BOLBOCERAS ERASTUS, Kolbe, 



Ann. Soc. Ent. Belg., li., 1907, p. 30. 



" Male : A small species, remarkable, however, by the shape of the 

 head and prothorax in the male. Fuscous brown, shiny, antennae 

 ferruginous ; head shiny, loosely punctate, tri-carinate, the anterior 

 carina produced by the epistoma, bending angularly back in the 

 centre, connected with the anterior frontal carina which is angular 

 in front, posterior (third) carina nearly straight, slightly flexuose 

 and almost united with the eyes ; prothorax smooth, shiny, little 

 punctate, sulcate in the dorsal part, bi-excavate on each side in 

 front, inner excavation deeper than the other, briefly corniculate, 

 also on each side between the two excavations, this small horn 

 is porrect and compressed, sub-acuminate at apex, and angular on 

 the upper side, in the median part of the dorsal part is a plane, 

 ■constricted process vertical in front the anterior upper margin of 

 which is straight, sharply cut off, slightly reflexed and bi-angular 

 ■on each side ; hind margin of prothorax thickened, sinuate on each 

 side ; scutellum very sparingly punctulate ; elytra punctate striate, 

 dorsal striae sub-sulciform ; anterior tibiae 6-dentate outwardly, 

 spur curved. 



Length 7 mm. 



Hab. Damaraland (Windhoek)." 



BOLBOCERAS PETULANS, Kolbe, 



Loc. cit., p. 30. 



u Ferruginous brown, head and elytra infuscate, upper side of 

 head closely, minutely granulose, moderately shiny, nearly opaque, 



