Un Aquatic Carnivorous Coleoptera or Dijtiscidce. 795 



1368. Hyclroporub evanescens, Boli., Ins. Caff. I, p. 252. Caffraria. 



"Subovatus, convexiusculus, flavo-testaceus, nitidus ; prothorace basi utrinque striola mi n ima sub- 

 obliqiia, in elytris continuata, impresso ; elytris confertim, evidenter punctulatis, basi, sutura late, postice 

 in disco excurrente, ante apicem abbre\'iata maculaque magna, laterali, ovata, nigris. Long, f , lat. 

 ^ m.m. " 



" E. minoribus. H. delicatulo non latior et dimidio brevior " 



Apparently a very minute species of Bidessus. — D. S. 



1369. Hydroporus exilis, Boh., Ins. Caff. 1, p. 257. Caffraria. 



" Ovatus, convexiusculus, supra nigro-piceus, subtus-obscure ferrugineus ; antennis basi, palpis pedibus- 

 que i-ufo-testaceis ; prothorace subtiliter, sat crebre punctulato, ferrugineo-marginato ; elyti'is obsolete, 

 crebre pimctuhitis, lateribus obscure ferrugineis. Long. 1^, lat. 1 m.m." 



A description follows the above diagnosis. I am unable to form any opinion of value, as to the position 

 of this species. — D. S. 



1370. Hydroporus fau-maii-ei, Lep., Pet. Nouv. II, p. 53 : and Ann. Soc. Ent. Fr. 1876, p. cxxi. 

 EiiroiJe. 



" Corselet a cotes arrondis, sans dilatation en avant, offrant sa plus grande largeur au milieu. Elytres 

 sans ^chancrure en arriere de I'epaule, sans cotes careniformes ; forme ovale allonge ; courbure du corselet 

 assez reguliere ; angles posterieurs plus ou moins marques, mais toujours sensibles. Lobe scutellaire du 

 prothorax saUlant et aigu." 



The above is compiled from Leprieur's analytical table, I. c. ; we are also informed that this is Fairmaire's, 

 Hydroporus vestitus, but that author's name is not adopted because of the prior H. vestitus, Gebl. I 

 have little doubt however that the species is not a good one, but only a form of the variable H. mcestus, 

 Faii-maire, (No. 456).— D. S. 



1371. HydroporiLS fractQinea, Solsky, Fedt. Turkestan. II, 5. p. 134. Turkestan. 



" Ovatus, convexus, nitidus, puctatus, testaceus ; oculis, thorace media basi elytrisque, sat crebre, 

 profunde punctatis, limbo angusto basali, sutura lineisque lougitudinalibus interruptis tribus, nigris ; 

 pectore abdomiueque nigro-piceis, fortius punctatis. Long. 2J (elytr. \'ix 2), lat. 1^ m.m." 



\This is supple^nented by a description in Eussian.^ 



From the diagnosis it appears that this is a species of Coelambus similar to Ccelambus interruptus (No. 

 391), but the breast and the ventral segments are said to be pitchy-black. — D. S. 



1372. Hydroporus fiyi, Clk., Ann. Nat. Hist. 1862, p. 181. Mexico. 



" Breviter ovatus, ad apicem subattenuatus, punctatus, niger vel ferrugineo-niger ; thorace fortiter 

 punctato, undique ad latera antice transverse flavo-notato, linea basali attenuata constricta, elongata . 

 elytris maculis quatuor magnis, his ad humeros subcircularibus, illis apicem vereus elongatulis. 

 Long. corp. 1 Jin., lat. J lin." 



"... in general pattern it resembles at first sight H. decoratus, Gyll., and H. cuspidatus, 

 Kunz. ; in form, size, and also in pattern, it approaches H. pumUio, Aube, but is much less coarsely 

 punctate ; it is remarkable for the fine thread like character of its thoracic longitudinal strise, which are 

 not short, and broadly defined, but elongated and narrow, as if formed by the scratch of a pin ; there are 

 no traces of strise on its elytra, except in the scutellary region, where there is an abbreviated row of 

 indistinct punctures near the suture : the surface of the elytra is sparingly covered with minute punc- 

 tures : legs and antennae fuscous." 



This is a species of Bidessus, perhaps allied to Hydroporus pictodes, (No. 256). — D. S. 



TRANS KOT. DrB. SOC , N.S. VOL. II. ^ ^ 



