^''8 On Aquatic Carnivorous Coleoptera or DytiscidcB. 



Group 8. (No. 848). 



Elytra with a subinarginal stria, and two other striae on each. 

 The striae present in this species are those which, if the complement were com- 

 plete, would be the sixth and tenth. 



848. Copelatus capensis, (Chev.) n. sp. — Suboblongus, sat depressus, elongatus, 

 nitidus, nigricans, capite anterius prothoraceque versus angulos anteriores plus 

 minusvc dilute rufescentibus, antennis pedibusque testaceis ; elytris versus latera 

 striis duabus elongatis, alteraque marginali valde abbreviata, et in disco stria 

 (juartaplus rainusve interrupta et obsoletescente ; prosterno in medio altc conipresso- 

 carinato. Long. 7, lat. 3i m.m. 



The male differs from the female by its slightly dilated tarsi, and the form of 

 the front tibiae which are curved at the base, and are on the inner edge bisinuate 

 on their basal portion. 



Caffraria, (Adoo Buh^li). G89. 



Group 9. (Nos. 849 and 850). 



Elytra with a submarginal stria and five other striae on each. 

 The two species although agreeing in the striation of the elytra are probably not 

 really allied to one another. 



849. Copelatus dorias, n. sp. — Fern., Elongatus, angustulus, subparallelus, minus 

 nitidus, subtus rufo-piceus, abdomine piece, supra piceo-niger, capite, prothoracis 

 lateribus clytrorumque basi lateribus et apice dilutioribus ; antennis pedibusque 

 testaceis ; elytris striis quinque elongatis, P ad 4"° fere tequalibus, quinto paulo 

 breviore, striaque marginali anterius valde abbreviata ; supra punctulatus, et in 

 prothorace elytrisque strigulis brevissimis numerosis ; prosterno in medio fortiter 

 compresso-elevato. Long. 5i, lat. £2 m.m. 



This is a very distinct species, of which I have seen but a single female : the first 

 stria is remote from the suture ; the numerous very short scratches on the elytra 

 are absent at the apex, and replaced by some distant punctures. 



Borneo, (Sarawak; found by the MurquLs G. Doria in 18G5 or "07). 709. 



