BY THE REV. T. BLACKBURN. 741 



nigro-ceneus, Newm., is the same insect. The only noteworthy 

 differences between the two descriptions are that Newman does 

 not mention the reddish pitchy colour of the extreme margin of 

 the elytra (which is scarcely noticeable in some examples before 

 me) and that he calls the stride of the elytra " haud puncta," 

 while Erichson says " btriis omnium subtilissime punctulatis." 



Platynus Murrayensis, sp.nov. 



Elongatus ; parallelus ; testaceo-brunneus, pedibus dilutioribus ; 

 prothorace capite parum latiori, quam longiori vix latiori, subti- 

 liter canaliculato, basi margini antico latitudine tequali, lateribus 

 leviter arcuatis, latitudine majori mox ante medium posita, angulis, 

 posticis obtusis ; elytris subtiliter striatis, striis vix perspicue 

 punctulatis, stria 3^ ante medium manifeste profundiori. 



[Long. 4?, lat. Ig lines. 



The width of the prothorax scarcely exceeds that of the head 

 across the eyes ; the elytra are unusually narrow in proportion to 

 the prothorax (as 14 to 9) ; the prothorax is scarcely ^ wider than 

 long. This species bears some superficial resemblance to the 

 European Ancliomenus livens, GylL, but is considerably narrower 

 and more elongate. It is at once distinguished from P. mar- 

 ginellus, Er., by its much more elongate form and prothorax 

 scarcely wider than long, as well as by its colour, and the less 

 noticeable deepening of the 3rd stria of the elytra. 



Murray Bridge, S.A. ; on swampy ground. 



HYDROPHILID.E. 



Hydrobiomorpha Helena, sp.nov. 



Sat convexa ; sat late ovalis ; nitida ; subtus dense breviter 

 pubescens, piceo-rufa ; supra crebre minus subtiliter punctulata, 

 olivaceo -nigra ; elytris vittis 6 viridibus notatis ; labri et clypei 

 parte anteriori, palpis (apice sum mo nigro excepto), an tennis 

 (articulis ultimis 3 piceis exceptis) et pedibus, rufo-testaceis ; 



