201 



pubescence of the upper surface is of a silvery white colour, and 

 is much mixed with long erect hairs. Compared with the Euro- 

 pean R. litnrus this species is much wider, with more strongly- 

 rounded sides and much stronger puncturation. 



I have re-described this insect, because the original description 

 is very incomplete and founded on a very pale specimen. I do 

 not think there is any doubt of the correctness of my identifica- 

 tion. 



Apparently common all over Southern Australia. 



H. insipidus, sp. no v. Elongato-ovalis ; sat convexus ; pubescens ; 

 minus nitidus ; totus brunneus (meso- et meta-sternis et 

 abdomine piceis exceptis) ; prothorace quam longiori paullo 

 minus duplo latiori, elytris basi vix angustiori, antice vix 

 angustato, lateribus parum arcuatis, angulis anticis plane 

 rotundatis haud prominulis, postice subrectis ; capite pro- 

 thoraceque subtiliter, elytris sat fortiter, sat crebre punctula- 

 tis ; metasterno medio subtiliter transversim rugato vix 

 perspicue punctulato. Long., 1|-1. ; lat., -|1. 

 The abdominal plates nearly reach the apex of the basal seg- 

 ment, and are punctured a little more sparingly than the sides of the 

 segment. The flattened ridge of the prosternum is strongly nar- 

 rowed from its base to the front, which is pointed. The pubescence 

 •of the upper surface is whitish-brown in colour, and is mixed 

 with a few rather long erect hairs. In some examples the suture 

 is narrowly infuscate, and in some the elytra have a slight opales- 

 cent greenish gloss. The puncturation of the elytra is less strong 

 than in R. Evansi and R. cyaneus, and slightly stronger than in 

 R. Ictticulus. It is very similar to that of R. liturus, Fab. 

 Roseworthy, S.A., and Kangaroo Island. 



R. debilis, sp. nov. Ovalis; sat convexus; pubescens; nitidus; 



supra piceo-niger vix ?eneo-tinctus ; capite, prothorace, cor- 



pore subtus, antennis, palpis, pedibusque, plus minus fer- 



rugineis ; prothorace quam longiori duplo latiori, elytris basi 



vix angustiori, antice sat angustato, lateribus subrectis 



(marginibus subfortiter reflexis), angulis anticis rotundatis, 



posticis distinctis obtusis ; capite prothoraceque minute sat 



crebre, elytris prope scutellum subtilissime sparsim (latera 



apicemque versus magis distincte), punctulatis ; metasterno 



medio ^dx distincte sculpturato. Long., 1-|1 ; lat., f 1. 



An obscure species resembling R. Evansi, but smaller and 



-differently punctured, the punctures on the elytra near the 



scutellum being scarcely visible under a Coddington lens. The 



prothorax is very wide and short, with its lateral edges more 



strongly reflexed than is usual in the genus, especially at the 



anterior angles, which are sub-explanate. The abdominal plates 



