14 M. L. Peringuey s Third Contribution [March 30, 



basi pube albida vestitis ; prothoraee angusto, oblong o-ovato, elytris 

 elongatis, sub-ovatis, deplanatis, in singulo septem costatis, inter stitiis 

 latis, profunde sulcatis ; margine laterali bifariam sulcata setisque 

 nonnullis erectis munita. 



Long. 21-24, Lat. 7-8 mm - 



Might be taken at first sight for P. gracilis, Dej., but is of a larger 

 size and the elytra are much more depressed, nearly plane ; the seventh 

 pre-marginal costa reaches much nearer the base, the outer margin has 

 two distinct series of broad punctures, and the outer carina of the 

 margin is set with a row of distant, erect, bristles. 



40. P. fovea.ta. Perroud. 



Recorded from the Orange Free State, Transvaal, Natal, Limpopo 

 River. 



41. P. divisa. Bohem. 



from Zambeze River (Bradshaw). 



42. P. opulenta. Boh. 



„ from Damaraland only. 



43. P. Alstoni. spec. nov. 



Niqro-brunnea, nitida, glabra, capite macula rufa inter oculos 

 posita ' prothoraee late cordiformi, medio sulcato ; elytris elongato- 

 ovalibus ad basin leviter angustatis, in medio nonnihil ampliatis, postice 

 breviter acuminatis, deplanatis, late carinatis, interstitiis regulariter 

 sulcatis. 



Long. 23-24, Lat. 6-7 mm ' 



Facies unlike any other South African species of the genus Polyhirma 

 but without any generic characteristic difference. Rufous black, 

 hairless except on the lateral margin of the elytra, the outer part of 

 which has a few distinct rigid bristles ; head as in other species of the 

 genus and with a distinct large reddish spot between the eyes ; 

 prothorax broad and very cordiform ; elytra sub-parallel, slightly 

 narrowed at the base, very little amplicated in the middle, little 

 narrowed behind, not convex, and each with six carinae, the first four 

 from the suture rounded, the other two acute, intervals finely pitted at 

 a regular and long distance, outer margin with a double row of foveae. 



I have much pleasure in calling this insect after G-. Alston, Esq., to 

 whom the South African Museum is greatly indebted for a valuable 

 entomological collection made under great difficulties in British 

 Bechuanaland, where this insect was first met with. 



