On Aquatic Carnivorous Coleoptera or Dytiscidoe. 5G5 



810. Copelatus ferrugineus, n. sp. — Ovalis, angustulus, minus depressus, vix 

 parallelus, feiTugineus, elytris testaceis ; elytris seriebus punctorum sat distinctis, 

 et versus apicem strigulis transversis distinctis ; prothorace ad angulos posteriores 

 punctis strigulosis parcis. Long. 4i, lat. 2^ m.m. 



The male has the front and middle tarsi a little dilated. The species is very 

 closely allied to C victorijB, but is a little larger ; the most important difference 

 seems to be the distinctness of the transverse scratches on the hind part of the 

 elytra. 



Australia, (Port Denison). 6G3. 



811. Copelatus lividus, n. sp. — Ovalis, angustulus, elongatus, minus depressus, 

 ferrugineus, elytris testaceis, abdomine pectoreque nigris; elytris seriebus punctoruai 

 sat distinctis, versus apicem strigulis transversis distinctis ; prothorace ad angulos 

 posteriores punctis strigulosis paucis. Long. 51, lat. 21 m.m. 



The male has the front and middle tarsi a little dilated. The species is very 

 closely allied to the three preceding, but is larger than any of them. 



Australia, (Adelaide, Melbourne). G64. 



812. Copelatus labratus, n. sp. — Fern., Ovalis, angustulus, elongatus, minus 

 depressus, piceus, capite prothoracisque lateribus plus minusve dilutioribus, 

 antennis pedibusque testaceis ; prothorace ad latera strigulis brevibus crebribus, 

 disco latius Isevigato, medio brevissime canaliculato ; elytris seriebus punctorum 

 sat distinctis, crebrius punctulatis, sed ad latera in medio baud conspicue longitu- 

 dinaliter strigulosis. Long, b^, lat. 2| m.m. 



I have seen only females of this species which differs from those following by 

 its smaller size, and by the much diminished development of the short longitudinal 

 impressions on the upper surface. 



Australia, (Melbourne, Victoria). CG5. 



813. Copelatus simplex, Clk., M.C.- — Ovalis, angustus, elongatus, niger, capite 

 anterius prothoracisque lateribus rufis, elytris versus latera dilutioribus, antennis 

 pedibusque testaceis ; elytris seriebus punctorum minus distinctis, obsolete punctu- 

 latis, in femina (cumque thorace) latius longitudinaliter strigulosis. Long. 5^, lat. 

 2| m.m. 



The male has the front and middle tar.si moderately dilated, and the anterior 

 claw on the front feet is thicker than the posterior, but a little before the apex 

 becomes rather suddenly slender ; the female has the sides of the thorax broadly, 



1 D '2 



