On Aquatic Carnivorous Coleoptcra or Dytiscidce. 431 



I have seen only males of this species, which is extremely closely allied to D.suavis 

 but is rather larger, and is readily distinguished by the denser and finer sculpture of 

 the ventral segments. 



I have from Persia a specimen which is either a variety of this species, or else a 

 closely allied species. I have seen no specimen from Armenia, (the locality of 

 Aub^'s specimen) and am not quite sure whether this be really his species. 



Asiatic Turkey, (Tarsus). 259. 



482. Deronectes indicus, n. sp. — (<?) Ovalis, subtilissime pubescens, subtus niger, 

 capite thorace, antennis pedibusque rufis, thorace antice et postice nigricante, elytris 

 testaceis signaturis magnis confluentibus fuscis ; thorace lateribus obliquis, baud 

 curvatis, angulis posterioribus nullo modo rotundatis, fere rectis ; elytris apicem 

 versus fortiter denticulatis, corpore dense subtilissime punctato. Long. 4f, lat. 

 2i m.m. 



The male has the second and third joints of the front tarsi short, and much 

 dilated, and the claws of these feet very unequal ; the hind one being much the 

 longer. I have seen only one individual. 



Northern India, (Coll. Bonvoiiloir). 287. 



483. Deronectes abyssinicus, n. sp. — Ovalis, convexus, fere sine pubescentia, vix 

 nitidus, njger, capite in medio prothorace versus latera et in medio vage rufis, elytris 

 testaceis, lineis elongatis approximatis, fere integris, nigris ; prothoracis lateribus 

 obliquis, angulis posterioribus fere rectis baud rotundatis; corpore dense sub- 

 tilissime punctulato, prothorace punctis majoribus conspicuis, pedibus rufescentibus 

 posterioribus piceis. Long. 4^, lat. 2i m.m. 



In the male the elytra are rather strongly denticulate near the extremity, the 

 front and middle tarsi are but little broader than in the female, but the hinder 

 claw of the front ones is distinctly lengthened. 



In this species the outline of the thorax and elj'tra is very continuous; when the 

 wing-case is taken off, it is seen that the portion forming the humeral angle projects 

 forward very much. 



Abyssinia. 260. 



484. Hydroporus carinatus, Aube, M.C. — Ovalis, opacus, fere sine pubescentia, 

 ferruginous, thorace elytrisque nigricaatibus, illo lateribus, his basi et signaturis 

 variabilibus testaceis : thorace angulis posterioribus omnino rotundatis, elytris 

 costa longitudinali fortiter elevata ; corpore dense subtilissime reticulato-punctato, 

 elytris fere impunctatis, obsoletissme rugosis ; thorace punctis majoribus obsoletis. 

 Long. 4f, lat. 2f m.m. 



