564 (Jit, Aquatic Carnivorous Coleoptera or Dytiscidce. 



806. Celina australis, Clk., M.C. — Oblongus, angustulus, elongatus, parallelus, 

 depressus, minus nitidus, ferrugineus, elytris abdomineque piceis, illis lateribus 

 dilutioribus ; prothorace elytrisque fere eequaliter breviter strigulosis, his seriebus 

 duabus punctorun distinctis, . strigulis ad. apiceiQ obliquis. Long. 5|, lat. vix. 

 1h m.m. 



The few specimens I have seen of this distinct species seem to be all females. 

 The peculiar parallel elongate form, and the distinct, regularly distributed short 

 fine strife, or scratches, of the upper surface separate it at once from the other 

 Australian s^^ecies. 



Australia, (Melbourne, Rockhampton). 667. 



807. Copelatus hydroporoides, n. sp. — Tn:-?}?., Oblongo-ovalis, baud elongatus, .sub- 

 depressus, minus nitidus, ferrugineus, plus miuusve infuscatus, prothoracis lateribus 

 elytrorumque basi dilutioribus, capite sat conspicue punctulato ; jn'othorace medio 

 late sub]a3vigato, ad angulos posteriores punctato; elyi;ris crebre, oequaliter forti- 

 terque punctatis. Long. 5, lat. 2^ m.m. 



I have seen only a single female, in bad condition, of this very distinct species ; 

 it bears a good deal of resemblance to the European Hydroporus ferrugineus, 

 (No. 636). 



New Caledonia. 684. 



808. Copelatus gracilis, n. s}).— Oblongo-ovalis, angustulus, sat parallelus, sub- 

 depressus, ferrugineus, elytris abdomineque castaneis, illis basi dilutiore, antennis 

 pedibusque testaceis ; elytris seriebus tribus punctorum, preetereaque parce subtil- 

 issime punctatis. Long. 4, lat. 2 m.m. 



The male differs from the female only by a very slight thickening of the front 

 and middle tar?i. 



Australia, (Rockhampton). 6G1. 



809. Copelatus victorioe, Clk., M.C. — Ovalis, angustulus, minus dcpressus, baud 

 parallelus, pone medium evldenter latior, ferrugineus, elytris testaceis, pectore 

 abdomineque nigricantibus, elytris seriebus tribus punctorum sat distinctis, versus 

 apiccm sine strigulis transvcrsis distinctis. Long. 4^, lat. 21 m.m. 



The male is distinguished from the female only by a slight thickening of the 

 front and middle tarsi. The species is readily dii^tinguished from C. gracilis by 

 the differences in form and colour. 



Australia, (Melbourne). GG2. 



