Mr. G. J. Arrow on Melolonthlne Coleoptera. 61 



altliouoli lie lias had the assistance of type-specimens. The 

 genitalia of the males are quite different in the three species 

 he has united, notwithstanding his statement. 



Mr. Periiiguey lias founded a genns FAironycha , but has 

 not included in his Catalogue the genus Triodonta, of which 

 many African species are known ; and as the sole character 

 by which he differentiates Euronycha (a feature of the male 

 alone) is found iu Triodonta^ they must be considered the 

 same. 



The type of ITeterochelus cfonager, F., in the British 

 Museum is the species called by Burmeister H. longipes, as 

 }\y. P^ringuey has recorded upon my authority (Trans. S. 

 Afr. Phil. Soc. xiii. 1908, p. 698) ; but the quite different 

 species to which the name gonag<-r was applied both by 

 Burmeister and by himself in vol. xii. of tiie above work 

 remains without any available name. 1 propose to call it 



Heterochdus melanopygus, sp. n. 



The two following species of South-African Hopliini were 

 described several years ago at Professor Poulton's request, 

 but the descriptions have remained unpublished. The insects 

 were amongst those collected more than a century ago by 

 the African traveller Burchell, and now in the British and 

 Oxford Museums. The data are taken from Burchell's note- 

 books in Professor Poulton's possession. 



Gouna hurchelli, sp. n. 



Rather large, broad, sooty blacky naked above^ beneath 

 thinly clothed with black hairs and a few white scales at the 

 sides ; head broad, rather convex and rugose above, clypeus 

 short, not angulate but bilobed ; prothorax rather broader 

 than long, strongly contracted in front, front angles acute, 

 hind angles very obtuse, surface finely punctate, with a faint 

 longitudinal channel ; scutellum small, almost semicircular; 

 elytra broad, faintly costate, irregularly and inconspicuously 

 punctured ; pygidium (male) large, inturned, transversely 

 punctate-riigose ; legs (male) rather long, hind ones slightly 

 thickened, unarmed, front tibiai tridentate, the innermost 

 tooth rather small and distant, all the claws single and 

 minutely cleft, but those of the hind legs hardiy visibly. 



Length 9 mm. ; greatest breadth 5 mm. 



Localid/. Burchell's two specimens (nos. 318 and 319) 



