On Aquatic Carnivorous Coleoptera or Dytiscide. 593 
888. Copelatus daemeli (Wehncke), n. sp.—/em., Oblongo-ovalis, sat depressus, 
nitidus, piceus, prothoracis lateribus dilutioribus, elytris nigricantibus, antennis 
pedibusque testaceis ; capite levigato ; prothorace subleevigato, basi utrinque strigulis 
paucis ; elytris striis undecim profundis, alternis posterius abbreviatis, aliaque margi- 
nali abbreviata, (stria suturali quam ceteris multo breviore). Long. 63, lat. 3 m.m. 
I have seen only a single female. 
Australia, (Cape York). 685. 
889. Copelatus perfectus, n. sp.—Ovalis, sat depressus, piceus, capite piceo- 
testaceo, prothoracis lateribus, elytris, antennis pedibusque testaceis ; capite trans- 
versim in vertice prothoraceque strigulis brevibus conspicuis ; elytris striis undecim 
profundis, aliaque marginali abbreviata. Long. 43, lat. 24 m.m. 
Though allied to Colymbetes aubei (No. 896), the present species is quite distinct 
by the smaller size, paler colour, and by the eleven instead of twelve-striate elytra. 
The sexes are very difficult to distinguish. 
New Caledonia. 680. 
890. Copelatus irregularis, Macleay, Tr. N.S. W. 1871, p. 126.—Ovalis, sat 
depressus, nitidus, supra nigricans, capite medio, prothorace lateribus elytrorum- 
que basi et apice, antennis et pedibus testaceis, subtus rufescens; prothorace strig- 
ulis in mare sparsis et profundis, in femina densis et subtilibus; elytris striis un- 
decim profundis et integris, aliaque marginali abbreviata. Long. 63, lat. 3} m.m. 
The male has the front and middle tarsi greatly dilated, and the front tibie 
curved and with the basal part slender and sinuate inwardly. 
Australia, (N.W.; Rockhampton, Port Bowen). 678. 
891. Copelatus brullei, Aubé, M.C.—Oblongo-ovalis, subdepressus, angustulus, 
nitidus, nigricans, antennis pedibusque rufescentibus ; prothorace ad margines 
strus brevissimis subtilibus, medio late levigato ; elytris striis undecim sat pro- 
fundis, suturali posterius abbreviata, marginali anterius haud abbreviata. Long. 
Slates meme 
In the male the anterior tibize are curved at the knee and have a slight notch 
there, the front and middle tarsi are dilated, but narrow. The specimens I have 
seen of this species are few in number, and are all in excessively bad condition, but 
the marginal stria not abbreviated in front while the sutural one is shorter behind 
than the others, the other stria, nine in number, continued tillnear the apex, except 
that the alternate ones are shorter than in the allied species, facilitate the recognition 
of the species ; the antenne are very elongate, the front tibise are slender. and the 
