798 On Aquatic Carnivorous Coleoptera or Dytiscide. 
1383. Hydroporus infacetus, Clk., Ann. Nat. Hist., 1862, p. 180. Mexico. 
“ Parallelus, punctatus, rufo-ferrugineus; capite flavo, ad medium rufo-fusco; thorace rufo-flavo 
elytris rufo-ferrugineis, ad basin flavo-lineatis, sutura fusca; pedibus antennisque rufo-flavis. Long. 
corp. 14 lin., lat. £ lin.” 
“ Parallel, subovate, thickly punctate, rufo-ferruginous: head finely punctate, flavo-testaceus ; near 
the inner margin of the eyes is a longitudinal suffused marking of rufo-fuscous ; thorax transverse, 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 surface is thickly punctate and rufo-ferruginous ; the 
anterior margin and also the longitudinal medial lines being flavous ; these lines, three or four in number, 
are more or less obsolete ; the extreme apex is also flavous, and the sutural line narrowly fuscous ; abdomen 
and underside black ; legs and antennz rufo-flavous.” 
From my notes on the British Museum collection it appears that this is a species of Celambus, near 
Hydroporus medialis (No. 401).—D. 8. 
1384. Hydroporus infaustus, Clk., Ann. Nat. Hist., 1862, p. 179. Mexico. 
“‘ Oblongo-ovalis, subparallelus, antice 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 rufo-notato ; elytris sat productis, ad 
apicem subacuminatis, subtiliter punctatissimis, punctato-striatis, nigris, ad latera obsolete rufo vel fusco 
notatis; pedibusrufo-testaceis, femoribus posticis nigro-suffusis; abdomine nigro. Long. corp. 2in., 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 line of the base a narrow transverse band of flavous is well defined ; thorax broadly transverse, the 
anterior margin excavated ; the sides subparallel and rounded in front, very narrowly and evenly 
marginate ; the line of the base is broadly angulated at the region of the scutellum ; the surface is finely 
and thickly punctate and medially somewhat rugose, with a row of minute punctures 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 subcircular and suffused) of flavous; elytra 
somewhat acuminated at the apex ; the shoulders are sufficiently prominent, thus forming an angle 
with the line of the margination of the thorax; the surface is very finely punctate, with six deep 
punctate striz (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 Hydroporus striatellus, Lec. (No. 494.)—D. 8. 
1385. Hydroporus infirmus, Boh., Ins. Caff. I, p. 251. Caffraria. 
‘“‘Oblongo-ovatus, supra convexiusculus, subtiliter crebre punctulatus, nitidus, piceus ; antennis basi, 
palpis pedibus prothoraceque flavo-testaceis, illo macula magna basali, antice rotundata, picea, notato, 
postice utrinque stria obliqua, in elytris continuata; elytris tenuiter pubescentibus, margine lineolisque, 
duabus brevibus pone basin, flavo-testaceis. Long. 14, lat. ? m.m.” 
[This diagnosis is followed, |.c., by a long description. | 
This is apparently a species of Bidessus allied to Dytiscus geminus (No. 269).-—D. 8. 
1386. Hydroporus inquinatus, Boh., Ins. Caff. I, p. 254. Carffraria. 
“Ovatus, conyexiusculus, rufo-testaceus, nitidus ; capite medio transversim infuscato, subremote 
punctulato; prothorace antice posticeque nigro, evidenter, subremote, medio subtiliter punctulato 
