On Aquatic Carnivorous Coleoptera or Dytiscide. 523 
series of small palettes, the claws of the front feet are elongate and nearly straight ; 
the female has the upper surface less shining than the male, and the meshes of the 
reticulation smaller. 
North America. (Lake Superior, Pennsylvania). 793. 
730. Agabus obsoletus, Lec.(?), M.C.—Ovalis, minus convexus, niger, elytris 
fusco-nigris, ad humeros plus minusve indistincte rufescentibus, prothoracis lateribus 
vix ferrugineis, antennis pedibusque rufis, his plus minusve picescentibus. Long. 8, 
lat. 45 m.m. 
Mas, nitidus, fere levigatus, densissime obsoletissimeque reticulatus. 
Fem., elytris subopacis, densius sat profundeque reticulatis, ad apicem leevigatis, 
reticulis fere parvis. 
The male has the three basal joints of the front and middle tarsi much incrassate, 
and furnished beneath with rather large palettes, about thirty in number on each 
foot, the basal palettes seem seated directly on the tarsus while the outer ones are 
borne on hairs; the claws on the front feet are elongate and slender, and sinuate 
beneath. 
The female of this species much resembles that of Agabus reticulatus, but has 
the meshes of the reticulation on the elytra smaller, and the apex quite without 
scratches. 
Western North America. 796. 
731. Agabus (Gaurodytes) lecontei, Crotch, Tr. Am. Ent. Soc. IV, p. 417.— 
Ovalis, minus convexus, niger, capite thoraceque zeneis, subtiliter (in femina magis 
conspicue) reticulatis, elytris fusco-rufis, antennis pedibusque rufis, his plus minusve 
picescentibus. Long. 7%, lat. 4¢ m.m. 
Mas, elytris nitidis, fere omnino leevigatis. 
Fem., elytris subopacis, dense profundeque reticulatis, reticulis circa scutellum 
angustis et elongatis, parte apicali fere omnino leevigata. 
The male has the three basal joints of the front and middle tarsi greatly incrassate, 
and furnished beneath with rather large palettes; the claws of the front feet are 
short, and the anterior one is furnished near the apex with a long slender lobe. 
The species differs from A. obsoletus by the outline of the thorax and elytra 
being more continuous, as well as by other characters which will be observed from 
the above diagnosis. 
Some individuals have the elytra testaceous, with infuscate nebulosities, and 
probably will prove a distinct species, but as I have seen only males, and these are 
very similar in their tarsi &c. to the darker form, I do not think it can be properly 
considered distinct at present. 
“Western North America. 797. 
TRANS. ROY. DUB. SOC., N.S., VOL. If. 3 Y 
