On Aquatic Carnivorous Coleoptera or Dytiscidce. 277 



obscuro, elytris guttis duabus basalibus, aliaque post-medium testaceis ; pedibus 

 rufis, posterioribus obscuris, antennis testaceis. Long. 3i, lat. If m.m. 



East Indiaj (Bombay fide Aube) . G 1 2. 



61. Canthydrus angularis, n. sp. — Ovalis, convexus, posterius attenuatus, perni- 

 tidus, niger, capite anterius, prothorace ad angulos anteriores, maculis duabus ad 

 elytrorum basin alteraque pone medium rufis ; antennis testaceis, pedibus quatuor 

 anterioribus rufis, posterioribus piceis. Long. 31, lat. If m.m. 



Siiiga23ore. 485. 



62. Hydroporus Isetabilis, Walk. M. C. — Ovalis, minus latus, posterius attenuatus, 

 sat convexus, pernitidus niger, capite, thorace pedibusque rufo testaceis, antennis 

 testaceis ; thorace anterius et in basi obscure nigro ; elytris maculis duabus pone 

 basin aliaque transversim elongata pone medium testaceis. Long, vix 2, lat. 

 1^. m.m. 



East India, (Ceylon fide Walker). 484. 



63. Hydrocanthus weisei, Welincke, Berl. Zeit. 1876, p. 222. — Ovalis, posterius 

 attenuatus, sat convexus, pernitidus, testaceus, prothorace versus basin infuscato, 

 elytris nigricantibus, fascia interrupta pone medium, vitta longitudinali ab humero 

 ad fasciam postmedialem descendente, maculaque magna basali testaceis ; pectore 

 fusco, abdomine nigro. Long. 2h m.m., lat. vix Ih m.m. 



Closely allied to Hydrocanthus politus (No. 69) and much resembles the dark 

 varieties of that species, but it is smaller and narrower, and has the apex of the 

 elytra dark. 



Cocliin China, (Welincke). Oil. 



64. Hydrocanthus quadrivittatus, Boh. M. C. — Ovalis, convexus, breviusculus, 

 posterius acuminatus, nitidus, Isevis, rufo-testaceus, elytris obscurioribus, vitta 

 laterali obliqua aliaque abbreviata prope suturam testaceis ; abdominis lateribus 

 leviter infusoatis. Long. 3, lat. if m.m. 



The stripes on the elytra readily distinguish this species ; they are not sharply 

 defined ; the exterior one starts from the humeral angle, and then leaves the outer 

 margin and extends along the middle of the wing-case reaching the apex ; the 

 inner mark is shorter and runs parallel with the suture, but does not extend much 

 beyond the middle. 



Cape Good Hope, (Cafii-aria fide Boheman). 610. 



