On Aquatic Carnivorous Coleoptera or Dytiscide. 79 
Or 
1368. Hydroporus evanescens, Boh., Ins. Caff. I, p. 252. Caffraria. 
“‘Subovatus, convexiusculus, flavo-testaceus, nitidus ; prothorace basi utrinque striola minima sub- 
obliqua, in elytris continuata, impresso ; elytris confertim, evidenter punctulatis, basi, sutura late, postice 
in disco excurrente, ante apicem abbreviata maculaque magna, laterali, ovata, nigris. Long. ?, lat. 
4 m.m.” ; 
“H). minoribus. H. delicatulo non latior et dimidio brevior . . . . . .” 
Apparently a very minute species of Bidessus.—D. 8. 
1369. Hydroporus exilis, Boh., Ins. Caff. I, p. 257.  Caffraria. 
“Ovatus, convexiusculus, supra nigro-piceus, subtus-obscure ferrugineus ; antennis basi, palpis pedibus- 
que rufo-testaceis ; prothorace subtiliter, sat crebre punctulato, ferrugineo-marginato ; elytris obsolete, 
erebre punctulatis, lateribus obscure ferrugineis. Long. 14, lat. 1 m.m.” 
A description follows the above diagnosis. J am unable to form any opinion of value, as to the position 
of this species.—D. 8. 
1370. Hydroporus fairmairei, Lep., Pet. Nouv. II, p. 53: and Ann. Soc. Ent. Fr. 1876, p. exxi. 
Europe. 
“‘Corselet & cdtés arrondis, sans dilatation en avant, offrant sa plus grande largeur au milieu. Elytres 
sans échancrure en arriére de l’epaule, sans cdtés caréniformes ; forme ovale allongé ; courbure du corselet 
assez reguliére ; angles postérieurs plus ou moins marqués, mais toujours sensibles. Lobe scutellaire du 
prothorax saillant et aigu.” 
The above is compiled from Leprieur’s analytical table, /. ¢. ; 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. meestus, 
Fairmaire, (No. 456).—D. 8. 
1371. Hydroporus fractilinea, Solsky, Fedt. Turkestan. IT, 5. p. 134. Turkestan. 
“Ovatus, convexus, nitidus, puctatus, testaceus; oculis, thorace media basi elytrisque, sat crebre, 
profunde punctatis, limbo angusto basali, sutura lineisque longitudinalibus interruptis tribus, nigris ; 
pectore abdomineque nigro-piceis, fortius punctatis. Long. 24 (elytr. vix 2), lat. 13 m.m.” 
[This is supplemented by a description in Russian. | 
From the diagnosis it appears that this is a species of Coelambus similar to Coelambus interruptus (No. 
391), but the breast and the ventral segments are said to be pitchy-black.—D. S. 
1372. Hydroporus fryi, 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 versus elongatulis. 
Long. corp. | lin., lat. $ 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. pumilio, Aubé, but is much less coarsely 
punctate ; it is remarkable for the fine thread like character of its thoracic longitudinal striw, 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 striz 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 antenne fuscous.” * 
This is a species of Bidessus, perhaps allied to Hydroporus pictodes, (No. 256).—D. S. 
TRANS. ROY. DUB, SOC.,N.S. VOL. If. 5K 
