On Aquatic Carnivorous Coleoptera or Dytiscide. 519 
721. Agabus (Gaurodytes) mimmi, Sahl., Not. fenn. XIV, p. 182.—Oblongo- 
ovalis, niger, supra enescens, antennis pedibusque rufis, vel nitidus et in elytris 
subtiliter reticulatus punctulatusque (6), vel sericeo-opacus et subtilissime reti- 
culatus, (2); prothorace lato, anterius conspicue angustato, lateribus curvatis, 
angulis posterioribus rotundato-obtusis, margine laterali haud crasso, Long. 72, 
lat. 4 m.m. 
The male has the three basal joints of the front and middle tarsi a little incras- 
sate and furnished beneath with rather dense and short glandular hairs, the claws 
of the front feet are elongate, but are scarcely visibly sinuate beneath; the 
difference in the sculpture of the upper surface in the sexes is very conspicuous. 
Northern Europe, (Finland to 66° 10’, according to Sahlberg). 740. 
722. Agabus sibericus, n. sp.—Oblongo-ovalis, niger, supra senescens, sat nitidus, 
antennis pedibusque rufis ; prothorace lato, anterius conspicue angustato, lateribus 
curvatis, angulis posterioribus rotundatis, obtusis, margine laterali haud crasso ; 
elytris crebre conspicue reticulatis et punctulatis. Long. 82, lat. 42 m.m. 
In the male the three basal joints of the front and middle tarsi are a good deal in- 
crassate and furnished beneath with glandular hairs, the claws of the front feet are 
elongate, but scarcely visibly sinuate beneath ; the species is very closely allied to 
Dytiscus wasastjernee but is larger, and the male has the front tarsi much more 
differentiated from those of the female. 
Eastern Siberia. 741. 
723. Agabus (Gaurodytes) walsinghami, Crotch, Tr. Am. Ent. Soc. IV, p. 419.— 
Oblongo-ovalis, niger supra zenescens, nitidus, antennis rufis, pedibus piceo-rufis, 
illis apice summo nigricante; prothorace anterius angustato, lateribus leviter 
curvatis, angulis posterioribus obtusis, subrotundatis, margine laterali lato ; elytris 
crebrius subtiliter reticulatis, et inconspicue punctulatis, pone medium guttula tenui 
pallida. Long. 92, lat. 5 m.m. i 
The male has the three basal joints of the front and middle tarsi distinctly incrassate 
and furnished beneath with long glandular hairs, the claws of the front feet are much 
elongate and sinuate beneath. There is also a slight but distinct difference in the 
sculpture of the sexes, the female having a slight silky opacity on the elytra: the 
front of the head and the sides of the thorax towards the front are rufescent. 
North America, (Oregon). 742. 
