On Aquatic Carnivorous Coleoptera or Dytiscide. 751 
“ Mas : tarsis anticis dilatatis, compressis, subtus longe pilosis, unguiculo interno latiore et crassiore, 
basi subtus obtuse dentato. Long. 10 (thor. 2, elytra 71), lat. elytra 53 m.m.” 
This is followed, 7. ¢., by a description in Russian. The species is apparently peculiar in its colouration. 
—D. §. 
1180. Agabus atratus, Mann., Bull. Mosc., 1853, III, p. 157. Russian North America. 
“ Oblongo-ovalis, aterrimus, opacus, striis anastomozantibus subtilissime recticulato-strigosus ; ore, 
antennis, capite antice, epipleuris, segmentorum ventralium marginibus, tibiis tarsisque quatuor 
anterioribus obscure rufis ; elytrorum lateribus disco parum dilutioribus ; pedibus posticis piceis. Longit. 
5 lin., latit. 23 lin.” 
This is omitted in Crotch’s “ Revision of the North American Dytiscide.”—D. 8. 
1181. Agabus bakewelli, Clk., Journ. Ent. IT, p. 19. Australia. 
“ Ovalis, subtilissime reticulosus ; striato-punctatus, niger, nitidus ; capite impunctato, inter oculos 
undique foveolato, nigro, ore mentoque rufis ; thorace antice emarginato, lateribus rotundatis, tenue 
marginatis, basi sinuato, antice ad marginem punctis transverse notato: elytris punctorum seriebus 
duabus subtiliter notatis, ad latera infra medium obscure rufo maculatis ; pedibus antennisque rufis, 
corpore subtus fusco-rufo. Long. corp. 3 lin., lat. 14 lin,” 
“ A. bakewelli resembles in size and appearance A. aflinis, Payk.; itis (besides other differences) more 
ovate and less parallel: it is probable that in some examples the subcircular rufous marking near the 
margin of the elytra may be obsolete.” 
This should no doubt be refered to the genus Platynectes.—D. 8. 
1182. Agabus confertus, Lec., Proc. Ac. Phil. 1861. p. 340. California. 
“Ovalis, modice conyexus, eneo-niger, nitidus, dense punctulatus, haud reticulatus, thorace minus 
fortiter marginato, latitudine fere triplo breviore, elytris lineola laterali guttaque postica pallidis ornatis, 
seriebus punctorum solitis distinctis, antennis ore pedibusque anticis piceo-rufis. Long. 32. Cabo de los 
Reyes.” 
[A comparison with A. semivittatus, Lec., follows the above diagnosis. | 
I have recently received for examination an individual of this species and find it difficult to locate in 
any of the groups proposed by me; it seems in fact to be between group 12, and group 19; it has the 
approximate middle coxe of the former group, but its thorax is less rounded at the sides and less discon- 
tinuous with the outline of the elytra, and the anterior portions of the coxal lines are fine, and although 
much divergent, are but little prolonged in the outward direction.—D. S. 
1183. Agabus dilatatus, Sol., Gay, Hist. Chil. 1V, p. 277. Chili. 
“A, fuscus, margine et capite ochraceus, postice dilatatus et obtusus, ovatus supraque obsoletissime 
punctulatus; prothorace medio transverse confuse ochraceo-fasciato ; elytris fuscis luteo-subreticulatis, striis 
tribus laxe punctatis, obsoletis ; palpis, labro antennisque luteo-pallidis ; pedibus obscuris. Long. 4 lin. 
4; lat.2lin. 4. MHabita tambien in la republica.” 
I am doubtful to what genus this should be referred ; in the Munich catalogue it is recorded under 
Agabus, but the trivial name dilatatus is replaced by that of valdiviensis.—D. S. 
1184. Agabus eminens, Kirsch, Berl. Ent. Zeit. XVII, p. 131. Peru. 
“Ovalis, nitidus, brunneus, prothoracis lateribus elytrorumque macula magna basali, humerum et 
