788 On Aquatic Carnivorous Coleoptera or Dytiscide. 
et munies d’une trés petite dent, elles sont trés deprimées vers la suture, la depression bornée sur chaque 
élytre par une céte elevée placée vers le tiers da la largeur & partir de la suture ; un autre vestige de cote 
se voit encore vers les deux tiers de la largeur, toutes deux sont accompagnées d’une ligne longitudinale 
de petits points placée contre chaque céte et en dedans de chacune ; ces cotes sont moins marquées chez 
la fem. II doit étre placé auprés de lH. ovatus, Sturm.” 
“Taurus, prés du Kuleg-Boghaz, dans les fontaines d’eau vive.” 
This should probably be placed in the genus Deronectes, as it is stated to belong to the “ opatrinus 
group.”—D. 8. 
1342. Hydroporus, atomus, Regt., Ann. Soc. Fr. 1877, p. xxx. Manilla. 
“Ovalis, vix elongatus, depressus ; capite testaceo ; prothorace testaceo, antice angustissime infuscato, 
postice maculis duabus griseis vix conspicuis notato, subtiliter punctato, in disco fere levi; elytris sat 
fortiter punctatis, griseo-testaceis, ad scutellum et suturam obscurioribus, maculis duabus in sutura latis 
confusisque vix notatis, striga suturali nulla; prothoracis elytrisque strigis curtis, ad basin fere contiguis ; 
subtus rufo-testaceus, pedibus concoloribus. Long. 1} m.m.” 
[This diagnosis is supplemented, p. 361, op. cit., by a description. | 
To be placed in Ridessus, probably near B. dilutus (No. 307).—D. 8. 
1343. Hydroporus bakewelli, Clk., Journ. Ent. I, p. 413. Australia. 
“ Ovatus, latus, depressus, crebre punctatus, flavus ; elytris flavis, nigro-notatis. Long. corp. 1? lin., 
lat. 4-1 lin.” 
“ Ovate, broad, somewhat depressed, attenuated towards the apex, flavous: head short, broad ; on either 
side within the margins of the eyes is a narrow depression ; the surface is finely punctate : thorax broad, 
rounded in front, the sides marginate, in front and near the base transversely subdepressed ; the surface 
is finely punctate, flavous, the anterior and posterior margins being narrowly and evenly fuscous black: 
elytra thickly and finely punctate, flavous, with two, three or four longitudinal markings of fuscous 
black : in one of the two examples before me the colour is rather fuscous black, with two interrupted and 
irregular medial bands of flavous. The great dissimilarity of pattern between these two examples 
plainly shows that the species is subject to much variety ; it may readily be distinguished from all others 
by its sectional characters, the absence of any thoracic fovea, the angle formed by the sides of the elytra 
and the thorax, and by its smaller size.” 
Moreton Bay. 
This may perhaps be a species of Chostonectes.—D. S. 
1344. Hydroporus basinotatus, Reiche, Ann. Fr. 1864, p. 234. Tangiers. 
“Tong. 34 m.m., lat. 2m.m. Breviter ovalis, leviter convexus, parce pubescens, subnitidulus, nigro- 
piceus ; ore antennarum basi, maculis elytrorum pedibusque testaceo-rufis. Caput minutissime punctatum. 
Thorax capite vix duplo latior, latitudine tertia parte paulo longior, antice valde angustatus, a latere 
rotundatus, supra scutellum triangulariter lobatus, crebre minutissime punctatus, sulco transverso, grosse 
punctato antice instructus. Elytra basi thoracis basi latitudine ac proxime ampliora, medio parum 
latiora, apice conjunctim rotundata, densissime minutissime punctulata, basi utrinque testaceo-maculata ; 
gcilicet litura longitudinali ad scutellum, macula oblonga in medio, altera arcuata ad humerum interdum 
secundum marginem descendente : his maculis ad basin interdum confluentibus ; elytrorum epipleuris basi 
testaceis. Subtus metathorace fortiter, mesothoraceque leviter punctatis ; abdomine minutissime punctato ;. 
femoribus basi infuscatis.” 
