221 



Further Notes on Australian Coleoptera^ 

 WITH Description of New Genera ani> 

 Species. 



By the Rev. T. Blackburn, B.A. 



[Read October 4, 1898.] 



XXIV. 



PALPICORNES. 

 NEOHYDROBius (gen nov. Hydrohiidm-utn). 

 Mentum antice emargiriatum ; palpi graciles, labialibus brevibus^ 

 maxillaribus valde elongatis (quam caput prothoraxque- 

 conjuncti haucl brevioribus), articulis ultimis 3 gradatim 

 brevioribus ; mandibulse ad apicem bifidse ; labrum trans- 

 versum antice late subemarginatum ; clypeus antice 

 emarginatus ; oculi modici minus convexi ; antenna? 

 9-articulat^ (articulis 1° magno, 2° sat elongate, 3°-5° 

 brevibus, 6° majori 7°"™ amplectenti, 7°-9° clavam forman- 

 tibus) ; prothorax transversus ; scutellum modicum 

 triangulare ; elytra ovalia nullo modo striata ; pedes modici ;. 

 tibise ad apicem bicalcaratae, tibiarum anticarum calcaribus 

 permagnis ; tarsi modici ; unguiculi maris antici in^quales 

 valde arcuati et subtus ad basin lamina muniti ; mesos- 

 ternum postice carina brevi armatum. 

 Type (Philhydrus) bury'itndiensis. Blackb. 

 Since I described this insect (Proc. L. S., N.S. W., 1889, p. 447) 

 I have obtained more specimens, including the male, and I find 

 that its tarsal characters, — together with some other characters 

 noted above, — are inconsistent with a place iti Philhydrus The 

 original specimens were taken in the Northern Territory, but 

 those received later are from N. Queensland. 



PSEUDOHYDROBius (vide infra). 

 The remarkable insect for which I propose this name and which 

 I have placed below (at the end of the Paljncornes), might on 

 account of its tarsal characters be considered more naturally 

 placed near Neohydrohius. It is therefore well to mention it in 

 both places. 



BEROSUS. 



The known Australian species of this genus are now so 

 numerous that it seems desirable to place a statement of their 

 characters in a tabular form. I am doubtful whether the species 

 Q 



