798 On Aquatic Carnivorous Coleoptera or Dytiscidce. 



1383. Hydroponis infucetus, Clk., Ann. Nat. Hist., 1862, p. 180. Mexico. 



" Parallelus, jmnctatiis, nifo-femigineus ; cnpite flavo, ad medium j-ufo-fusco ; thovace iiifo-flavo 

 elytris rufo-ferrugineis, ad basin flavo-lineatis, sutura fusca ; pedibus antennisque rufo-tiavis. Long. 

 Corp. 14 lin., lat. 4 lin." 



" Parallel, .subovate, thickly punctate, rufo-ferruginous : head finely punctate, flavo-testaceus ; near 

 the inner margin of the eyes is a longitudinal suflused marking of i-ufo-fuscous ; thorax transvei-se, finely 

 punctate, rufo-flavous ; elytra subparallel, sufficiently robust, the sides near the anterior angles forming 

 an obtuse angle with the sides of the thorax ; the siu-face is thickly punctate and rufo-ferruginous ; the 

 anterior margin and also the longitudinal medial lines being flavous ; these lines, three or four in number, 

 ai-e more or less obsolete ; the extreme apex is also flavous, and the sutural line narrowly fuscous j alidomen 

 and underside black ; legs and antennse rufo-flavous." 



From my notes on the British Museum collection it appears that this is a species of Coelambus, near 

 Hydroponis medialis (No. 401). — D. S. 



1384. Hydi-oporus infaustus, Clk., Ann. Nat. Hist., 1^(32, p. 179. Mexico. 



" Oblongo-ovalis, subparallelus, antics sat obtusus, confertissime et obsolete punctatus, punctato-striatus, 

 niger ; capite brevi, inter oculos undique late et obsolete depresso, punctatissimo, nigro, ad medium 

 prope basin transverse rufo-notato ; thorace transverso, lato, ad latera tenuiter marginato, prope basin 

 irregulariter transverse depresso, punctatissimo, nigro, ad medium nifo-notato ; elytris sat productis, ad 

 apicem subacuminatis, subtiliter punctatissimis, punctato-striatis, nigris, ad latera obsolete rufo vel fusco 

 notatis; pedibus rufo-testaceis,femoribusposticisnigro-suffusis; abdomine nigro. Long. corp. 21in.,lat. 1 lin." 



" Oval, somewhat produced, punctate-striate, black : head broad, on either side in front is an obsolete 

 depression ; the surface (under a high power) is very finely and thickly punctate, in colour black ; near 

 the Hue of the base a narrow transverse band of flavous is well defined ; thorax broadly transverse, the 

 anterior margin excavated ; the sides subparallel and roiinded in front, very naiTOwly and evenly 

 marginate ; the line of the base is broadly angulated at the region of the scutellum ; the surface is finely 

 and thickly jninctate and medially somewhat rugose, with a row of minute pimctures parallel to the 

 anterior margin ; near the base it is medially transversely depressed, in colour fuscous black, with a 

 post-medial marking (sometimes almost obsolete, sometimes subcii-cular and suffused) of flavous ; elytra 

 somewhat acuminated at the apex ; the shoulders are sufficiently prominent, thus fomiing an angle 

 with the line of the margination of the thorax ; the surface is very finely punctate, with six deep 

 punctate strise (more obsolete near the margins and apex) of a dull black colour, three or four obsolete 

 markings of flavous being more or less distinct near the line of margination ; abdomen and underside 

 black ; legs flavous, the apical joints being fuscous." 



This is allied to Hydropoi-us striatellus, Lee. (No. 494.) — D. S. 



1385. Hydroporus infirmus, Boh., Ins. Caff. I, p. 2.51. Caffraria. 



" Oblongo-ovatus, supra convexiusculus, subtiliter crebre punctulatus, nitidus, jiiceus ; anteunis basi, 

 palpis pedibus prothoraceque flavo-testaceis, illo macula magna basali, antice rotimdata, picea, notato, 

 postice utrinque stria obliqua, in elytris continuata ; elytris tenuiter pubescentibus, margine lineolisque, 

 duabus brevibus pone basin, flavo-testaceis. Long. H, lat. | m.m." 



[This diafjnosis is followed, I.e., hy a long desa'iption.'\ 



This is apparently a species of Bidessus allied to Dj'tiscus geminus (No. 269). — D. S. 



1386. Hydroporus inquinatus. Boh., Ins. Cafl". I, p. 254. Caffraria. 



•Ovatus, convexiusculus, rafo-testaceus, lutidus ; capite medio transversim infuscato, subremote 

 punctulato ; prothorace antice posticeque nigro, emlenter, subremote, medio subtiliter punctulato 



