On Aquatic Carnivorous Coleoptera or Dytiscide. 535 
752. Dytiscus fuscipennis, Payk., Agabus fuscipennis, M.C.-—Ovalis, posterius 
angustatus, convexus, ferrugineus, subtus plus minusve infuscatus, sat nitidus, fere 
leevigatus ; prothorace elongato, antrorsum conspicue angustato, lateribus obliquis 
haud curvatis. Long. 10, lat. 52 m.m. 
The male has the three -basal joints of the front and middle tarsi distinctly 
inerassate, and furnished beneath with hairs bearing moderately large palettes, the 
claws of the front feet are elongate and but little curved, a little sinuate beneath 
and rather slender. 
This species though not much shining has the sculpture only slight, the usual 
subserial punctures being obsolete, the surface has however an excessively fine and 
minute reticulation which prevents it being shining, and there is even a very slight 
sexual difference in this respect, the female being rather duller than the male. 
The species varies somewhat in colour, the individuals from Germany being darker 
than those from Lapland ; indeed in the examples from the former of these countries, 
the prothorax is generally quite infuscate, with the sides reddish. 
Northern Europe, Siberia, (Sweden, Finland, North Germany). 807. 
753. Agabus coxalis, n. sp.—(¢) Ovalis, latus, posterius acuminatus, sat convexus, 
subleevigatus, minus nitidus, testaceus, subtus et vertice nigro-ornatis, elytris vix 
fusco-nebulosis ; prothorace antrorsum fortiter angustato. Long. 10, lat. 6 m.m. 
The male has the three basal joints of the front and middle tarsi very broad, and 
but little compressed, and they are furnished beneath with rather long hairs, bearing 
large palettes; the claws on the front feet are very unequal, the front one being 
short and thick, while the hinder one is quite twice as long: the claws of the 
intermediate feet are equal and simple. The female I have not seen. 
The species resembles Dytiscus fuscipennis in form, but is readily distinguished 
by its variegate undersurface, the hind cox being broadly pale yellow in the 
middle, and surrounded with black ; the elytra are rendered dull by an excessively 
dense and minute but very regular reticulation : the broad male tarsi are remarkable. 
The serial punctures of the elytra are extremely obsolete. 
Eastern Siberia, (Angara) ; Lapland. 808. 
Group 22. 
Prosternal process extremely compressed ; wings of metasternum short, coxal lines 
much approximated, abruptly turned outwards at the apex ; apical joints of antenne 
dilated in the male. 
Three species from both Old and New Worlds. 
