198 Mr. G. J. Arrow on 



pnncto parvo humerali, margine tenui basali deinde ad scutelli 

 apicem, latere externo apiceque conspicuo non ad interstita interrupto 

 flavis ; capite, prothorace, scutello pedibusque omnino testaceis, 

 humeris evidentibus. Long. 15-17 m.m. 



Hah. Lake Ngami. 



Two specimens in the British Museum were collected 

 on the Livingstone Expedition about 1862, and another 

 from Lake Ngami is in Mr. Gorham's collection. 



The species is very much like P. capensis, Chaud., but 

 easily distinguished from it by the well-defined apical 

 margin to the elytra and the greater breadth of the costse. 

 The scutellum is yellow, as well as the parts of the elytra 

 immediately adjoining it, and the humeral mark is 

 closely connected with the lateral margin, whereas in P. 

 capensis it is normally completely detached. 



The next species as well as that just described belongs 

 to the " africanus " section of Chaudoir. 



P. nyasze, sp. n. 



Testaceus, elytris (lateribus, apice extremo, costarum extremi- 

 tatibus, puncto minuto humerali fasciaque media exceptis) segmen- 

 torumque abdominalium marginibus nigris ; capite prothoraceque 

 omnino testaceis, hoc impunctato, paulo breve, lateribus fere usque ad 

 basin leviter rotundatis, hinc parallelis, angulis posticis rectis ; elytris 

 paulo angustis, lateribus subparallelis, humeris evidentibus, apice 

 parum truncatis, margine laterali, puncto minuto humerali cum hac 

 juncto, apice extremo angustissime, costarum extremitatibus fasciaque 

 a margine ad costam tertiam attingente intus dilatata testaceis, costis 

 validibus. Long. 15-17 m.m. 



Hob. Nyasaland. 



This insect is closely allied to the preceding and P. 

 capensis, Chaud., the extremity of the elytra being, as in 

 the latter, only very vaguely tinged with yellow. The 

 prothorax has a different outline, the sides being more 

 gradually curved so that the broadest diameter is not 

 much in front of the middle, and the median elytral mark 

 is united to the marginal line and more or less club- 

 shaped instead of zigzag. The species seems also to be 

 allied to P. transvaalensis, Pering., described as having the 

 abdomen black with the centre yellowish, and a broad 

 discoidal band to the elytra. 



