0)1 Aquatic Carnivorous GvLeoplera or DytiscidcB. 571 



829. Copelatus restrictus, n. sp. — Obloagus, elongatus, angustus, depressas, 

 parallelus, fusco-rufus, capite, prothoracis lateribus, elytrorum basi, antennis 

 pedibusque rufis, prothorace elytrisque crebre subtiliter stvigulosis, his striis 3 vel 

 5 obsoletis. Lonor. 5 m.m. lat. 2.1 m.ni. 



In the male the front and middle tar^i are a good deal dilated, the front tibise 

 are rather stout and simple. 1 have seen but a single individual. 



Monte Video, (Sivori, Genoa Mus.) 6;) 7. 



830. Copelatus sexstnatus, n. sp. — Oblongus, sac angustus) subtus nigricans, 

 supra magis fusco-castaneus, crebre punctulatus, capite, prothorace ad angulos 

 aiiteriores elytrisque ad bashi ad apicem et ad latera rufescentibus, his striis 

 tribus, intermedia ad apicem desinente, prima et tertia a sutura et a margine 

 laterali tequaliter remotis. Long. G, lat. 3 m.m. 



In the male the front and middle tarsi are greatly dilated, the front tibise are 

 much, though gently, curved on their outside, and broadly emarginate a little dis 

 tance below the knee. I do not know the female of this very distinct species. 



South America, (Columbia). G5G. 



831. Copelatus punctulatus, n. sp. — Oblongus, angustulus, subparallelus, piceus, 

 capite prothoracis lateribus, elytrorum basi antennis pedibusque rufis ; prothorace 

 obsolete punctulato ; elytris parce punctulatis, striis quatuor elongatis, prima a 

 sutura remota. Long 5f, lat. 2f m.m. 



In this species the four striae on the elytra are elongate, the second and fourth 

 being a little shorter ; the first is twice as distant from the suture as it is from tlie 

 second, while the outer one is almost equidistant from the tliird and from the lateral 

 margin. The specimens before me are four in number and vary in length, and 

 somewhat in depth of colour and in the distinctness of the fine punctuation of the 

 upper surface. In the male the front and middle tarsi are a good deal dilated, and 

 the front tibite a srood deal bent below the knee and with a notch on their inner 

 edge. 



Brazil, (Santa Rita, Aug., 1850, R. F. Salilberg). G53. 



832. Copelatus prolixus, n. sp. — Oblongus, perelongatus, angustulus, subparallelus, 

 piceus, capite, prothoracis lateribus elytrorumque apice rufescentibus, antennis, 

 pedibus elytrorumque basi rufis ; prothorace fere laevigato ; elytris parce punctulatis, 

 striis quatuor fere sequalibus ; coxis posterioribus minus fortiter aciculatis ; antennis 

 valde elongatis. Long. 7, lat. 3 m.m. 



This is a species of remarkably elongate form ; the four strise of the elytra are 

 nearly of equal length and terminate a little before the extremity, the first of them 



TBANS. HOT. DCB. SOC, N.S., TOL. II. * E 



