1904. | Catalogue of the Coleoptera of South Africa. 269° 
“J 
the median part, extending across the median part of the disk; 
clypeus hexagonal and covered like the head with somewhat hair- 
like scales springing from the scrobiculate punctures; antenne, 
palpi, and legs rufescent; prothorax of the usual shape, plainly 
grooved for two-thirds of the length, and with the walls of the 
groove broadly smooth, the basal, elongate denuded patch is very 
distinct on each side, the hairs on the outer margins and in the base 
are white, but occasionally flavescent ; scutellum impunctate ; elytra 
cylindrical, non-costulate; under side and legs as in the other 
species ; anterior tibiz uni-dentate outwardly; sixth and seventh 
joints of antenne aculeate. 
Length 12-13 mm.; width 53-6 mm. 
Hab. Natal (Durban, Frere); Transvaal (Lydenburg, Pretoria, 
Potchefstroom, Johannesburg). 
Pstnonycuus pupontt, Burm., 
Handb. d. Entomol., iv., 2, p. 289. 
Male: A little more robust than P. gracilis, bronze-green, but with 
the scales on the upper side finer and much more elongated, the 
pattern on the elytra is quite indistinct ; clypeus plainly hexagonal ; 
the broad denuded walls of the median groove of the prothorax 
are very plain, but the supra-lateral, basal, denuded patch is 
sometimes very indistinct, and the outer margins are strongly 
serrate ; the scutellum is impunctate ; the elytra are not costulate 
but the punctures are deep and seriate ; the antenne and palpi are 
rufescent or piceous, the eighth antennal joint is laminate and 
reaches to two-thirds of the length of the eighth, the sixth is also 
laminate but is only one-fifth of the length of the eighth, and the 
anterior tibia are uni-dentate. 
Length 134-14 mm.; width 63-7 mm. 
Hab, Natal (Upper Tongaat). 
PSILONYCHUS PERTURBATOR, Nl. spec. 
Male: Shape, colour, and size of P. gracilis, the white scales on 
the upper side are of the same size and similarly disposed, but it 
differs in the shape of the clypeus the outer sides of which are not 
aculeate in the median part, and are thus very much less hexagonal ; 
in the shape of the antennal joints, the seventh of which is laminate 
and about one-sixth of the length of the eighth, while the sixth is 
not aculeate; and also in the tibiz being bi-dentate outwardly ; the 
median depression of the prothorax is not deep, the two smooth walls 
are more in the shape of two parallel median patches, and the supra- 
