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



lateral, supra-basal ones are often indistinct ; scutellum impunctate, 

 but with a slight median impression at the base. 



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



Hob. Cape Colony (Kowie) ; Natal (Durban). 



PSILONYCHUS GEONDAHLI, Burm., 



Handb. d. Entomol., iv., 2, p. 290. 

 P. costicollis, Bohem., Insect. Caffrar., ii., p. 90. 



Bronze-green, with the usual clothing of scales, which, however, 

 are navescent on the upper side, and very few in number on the 

 prothorax which is very coarsely punctured and clothed with very 

 long, erect, dense navescent hairs ; the head is also hairy, and the 

 scales on the clypeus are also somewhat hair-like, the latter is 

 moderately emarginate in front and not acuminate or angular 

 laterally ; the median impression is absent in the three examples at 

 my disposal, and there are therefore no smooth walls, but the supra- 

 basal, supra-lateral patches are distinct ; the elytra are very cylin- 

 drical and more costulate than the other species, the three dorsal 

 bands of slightly navescent scales are sub-obliquely interrupted past 

 the median part in a more or less indistinct manner ; scutellum im- 

 punctate ; anterior tibiae bi-dentate outwardly ; antennae chestnut- 

 red, the two ultimate joints of the pedicel not aculeate. 



Length 10 mm. ; width 5 mm. 



Hah. Natal (Maritzburg). 



Psilonychus pilosicollis, Bohem., 

 Insect. Caffr., ii., p. 89. 

 P. pruinosus, Gerst. 



I have seen the type only of this species, which differs from my 

 examples of P. grondahli by its size, which is about one -third 

 larger ; the pubescence of the prothorax is longer, more lanuginose, 

 without any traces of scales, and the punctuation is very much 

 narrower ; the costules of the elytra are much less in relief, and the 

 scales are slightly finer ; the anterior tibiae are bi-dentate. 



I did not possess P. deridens at the time I examined the type or 

 co-type of P. pilosicollis, Boh., nor did I think of verifying then the 

 number of the antennal joints. This species might thus prove to be 

 identical with P. deridens, Boheman's description agreeing pretty 

 fairly with it, but the co-type seen was certainly different. Boheman 

 gives also to that species avast area of distribution, i.e., "Caffraria 

 tota." Now such is really not the case, and it is thus probable that 



