ij66 On Aquatic Carnivorous Colcoptcra or Di/tincidce. 



as well as the basal portion of the elytra, covered with regular, fine, short, distinct 

 longitudinal impressions. 



Australia and Tasmania, (Melbourne). G66. 



814. Copelatus ater, n. sp. — Ovalis, minus angustus, subdepressus, niger, capite 

 thoraceque ad angulos anteriores piceo-rufis, antennis pedibusque rufis ; prothorace 

 ad latera subtilissime strigoso-punctato ; elytris crebre evidenter punctatis, seriebus 

 punctorum sub-distinctis ; coxis posterioribus fortiter crebreque strigosis. Long. 

 7i, lat. 3a m.m. 



The male has the front and middle tarsi a good deal dilated ; the anterior claw of 

 the front foot is thicker than the other, and is straight beneath, and has an extremely 

 short, slender termination ; there is no difterence in the sculpture of the two sexes, 

 except that the female has the strigose punctuation at the sides of the thorax just 

 perceptibly more distinct. The species is about the size of the European D;)i;iscus 

 agilis (No. 825), but is broader and less parallel ; of all the Copelati it is the species 

 most resembling an Agabus by the superficial characters of colour, form, and 

 sculpture. 



Australia, (Swan River, K. George Sound). 6G8. 



815. Copelatus extensus, n. sp. — Fern., Oblongo-ovalis, elongatus, niger, thorace 

 ad latera picescente, antennis pedibusque rufis ; elytris seriebus punctorum distinctis, 

 absque strigulis ; coxis posterioribus strigulis crebribus profundis. Long. 10, lat. 

 4| m.m. 



There are only a very few insignificant scratches on the thorax, and none at all 

 on the elvtra. I have only seen a single individual : though it much resembles at 

 first sight C. acuductus (No. 819), it is very distinct therefrom by the sculpture of 

 the thorax and elytra. 



Aiistralia, (Brisbane). G60, , 



816. Copelatus maculatus (Wehncke), n, sp. — Fcm., Oblongo-ovalis, elongatus, sat 

 depressus, minus nitidus, niger, prothoracis lateribus picescentibus, elytris apice 

 rufo-maculatis, antennis pedibusque rufis ; capite crebre evidenter punctato ; thorace 

 medio Isevigato, versus latera strigulis omnium brevissimis parcioribus ; elytris 

 strigulis brevissimis numerosis undique fere cequaliter ornatis. Long. 6^, lat. 

 31 m.m. 



I have seen only a single, very mutilated, individual of the female sex. 



New Caledonk. 083. 



