1908.] Catalogue of the Coleoptera of South Africa. 565 



tersidorsis, d'Orb. dives, Har. 



lanista, Casteln. optimis, Pering. 



aciculatus, FS.hr. 



loricatus, Klug. 



gemmatus, Pering. 



alcyon, Klug. iricolor, d'Orb. 



marginidens, d'Orb. 



bieallosus, Klug. brucei, Eeiche. 



., „ , _ Subg. DIASTELLOPALPUS, Lansb. 

 unidens, Qued. 



susjpectus Pering., quinquedens, Bates. 



sapphirinus, Fahr. ponderosus, Pering. 



aureiceps, d'Orb. orbignyi, Pering. 



Gen. CACCOBIUS, E. G. Thorns., Cat. i., p. 275. 

 Cacconemus ; Caccophilus ; Diaglyptus. 



The main, if not only character, distinguishing Caccobius, sens, 

 lat., from Onthophagus, Phalops, and other very closely allied 

 genera, is that in the former the anterior tibiae are transversely 

 truncate at tip, whereas in the latter they are obliquely truncate 

 inwardly. 



But even this is not the case in Caccobius anomalus, Kl., in which 

 the $ has laminate anterior tibiae transversely truncate, whereas in 

 the $ these limbs are shaped as in Onthophagus, &c. 



Nor can it be said that the convex shape of the frontal part is a 

 character belonging exclusively to Caccobius, because in several 

 species the armature is that of certain species of Onthophagus 

 (C. obtusus, &c). On the other hand, certain forms have a facies of 

 their own (viridicollis , schadlei, postlutatus). 



The restriction of the eighteen South African species into this 

 genus, or sub-genera, makes, however, the identification of the very 

 numerous kinds of South African Onthophagus (154 spp.) slightly 

 easier. 



In Caccobius, Jek., the under part of the prothorax bears on each 

 side a supplementary carina. Sensu stricto only one species, a 

 palaearctic one, belongs to this section. 



In Cacconemus, Jek., the supplementary carina is wanting as in 

 Onthophagus, and the upper part of the body is glabrous. One 

 South African species is included in this sub-genus. 



In Caccophilus, Thorns., this carina is also wanting, but the upper 

 part of the body is more or less pubescent. 



In Diaglyptus, d'Orbign., the metasternum has in front a trans- 

 versely arcuate line continued behind and rounding the intermediate 



