On Aquatic Carnivorous Coleoptera or Dytiscidoe. 809 



plus profonde, mais moms serree a la base et lateralement, extremement fine sur le disque. Elytres assez 

 larges, regulierement ovales, ne formant pas d'angle sensible avec les cotes du corselet, Wgerement 

 atteimees en arrifere et assez largement arrondies a I'extremite ; une bande rotigeatre nn pen confuse, 

 embrassant tout le poiutour des elytres, dilatee vers la base en dedans, et marquee uu peu au-dela du 

 mOieu d'un trait longitudinal noii-atre; ponctuation ivhs fine et seiTee ; une ligne de points en forme de 

 strie suturale bien marquee, un autre vers le milieu, effacee. Pattes noiratres ; genoux, base des tibias 

 et tarses rougeatres ; chaque article de eeux-ci obscar a I'extremite. 



" II a qiielques rapports, pour la bande laterale des elytres, avec les H. striola et vittula, mais il s'eu 

 distingue sans peine par sa couleur noii-e, sa forme courte, large, son corps non pubescent, sa fine 

 ponctuation, etc." 



La Saulcette, Savoy, with D. palustris, in April. 



1427. Hydroporus sansi, Aube, Ic. V, p. 232, pi. 26, f. 6. Spec. p. 509. Europe. 



" Oblongo-ovalis, convexiusculus, pallide testaceus, thorace ad latera late rotundato, vix postice nigro- 

 maculato, transversim ad basin depressiusculo ; elytris tribus fasciis irregularibus, oblique transversis, 

 plus minusve confluentibus nigro-omatis, apice vix denticulatLs. Long. 5, larg. 2^ m.m." 



[This diagnosis is followed, I.e., by a long description.'^ 



It would seem doubtful whether this be more than a variety of Dytiscus depressus (No. 472) ; the two 

 ■ individuals described by Aube were found at Barcelona. — D. S. 



1428. Hydropoi-us sedilloti, Regt., Ann. Soc. Fi-., 1877, p. 352. Syi-ia. 



" H. vario Aube sat vicLnus, .sed multo magis depres.sus et elongatus, haud dilatatus ; capite rafo, ad 

 verticem et oculos infuscato ; prothorace rufo, antice, postice et in disco late infuscato, ad latera et basin 

 punctulato, in medio fere levi, atque striga fere marginali utrinque impresso. El3rtris sparsim pimctulatis 

 depressis, elongato-ovatis, haud dUatatis nee attenuatis, nigro-fuscis, lateribus, vittis tribus longitudinali- 

 bus, macula sublaterali post medium et apice testaceis ; vitta interiore brevissima, saepe obsoleta, secunda 

 ' plus minusve abbreviata et ad basin extus hamulata, tertia apicem attingente, et antice cum margine, ad 

 medium cum macula sublaterali confluente ; epipleuris testaceis. Subtus niger, ano ferrugineo ; pedibus 

 nifo-ferrugineis ; antenuis ad basin testaceis, postea infuscatis. Long. 2^ m.m. Djebel-ech-Cheik, 

 Borak." 



[This is followed, I.e., hy a description in French, in greater part a translation of the ahoveJ\ 



1429. Hydroporus sellatus, Lee, Proc. Ac. Phil. 18G6, p. 365. North America. 



" Ovalis, convexus, modice elongatus, nitidus, subglaber, capite nigro-piceo subtiliter haud dense 

 punctato, ore maculaque occipitali testaceis, thorace testaceo, apice infuscato, basi late piceo, profunde 

 punctato, lateribus obliquis rectis, cum elytris (lateraliter visis) angulum valde obtusum fonnantibus ; 

 elytris pallidis, profunde sat dense punctatis, punctis majoribus versus suturam et in vitta dorsali parum 

 distincta digestis, sutura, lineolis paucis, plagaque postica irregulari subsutiu-ali maxima nigrLs ; subtus 

 niger, mde punctatus, pedibus testaceis, antennarum apice femoribusque infuscatis. Long, 3-5 m.m." 



Dacotah. 



[A comparison with H. suiuralis follows the above diagnosis.'^ 



A specimen of this species recently communicated to me by its describer, indicates it as being a species 

 of Coelambus closely allied to Hydroporus medialis. No. 401, but distinct therefrom by a dark coloured 

 prothorax, a dark mark on each side of the head, the antennfe infuscate towards their apex, the upper- 

 surface rather less coarsely punctured, and very minute central line on the prothorax. — D. S. 



1430. Hydroporus semiclusus. Walk., List. Col. Lord, p. 10. Wady Ferran, 



" Black, oval, slightly shining. Head with a lar'ge tawny patch extending to the fore border, near 



