776 On Aquatic Carnivorous Coleoptera or Dytiscidce. 



" G. hseffiieri Aube Cnec Thorns.), valde affinis, vix nisi prothorace angiistior.-, statiiru paulo minove 

 coloreque magis piceo distinguendus." 



Very rare, taken l)y Makliu in Muonioniska ; I bave fouuil it in stagnant water on tlie top of a liigli 

 hill at Kilpisjar\-i in Lapland (G9°), d. 24 Aug., 1807. 



1298. Gaurodytes leptsipsis, Lee, Proc. Am. Phil. Soc. 1878, p. 596. North America. 



" Fern. Elongate-oval, less obtuse than usual, black with a slight bronzed tint, opaque finely strigose 

 with lines forming very elongate meshes ; antennsB, palpi, front and middle legs tinged with piceous. 

 Head less opaque tliau the prothorax, the sides of the latter are oblique, finely margined and scarcely 

 rounded. Elytra with the usual rows of punctures indistinct. Beneath shining, finely reticulate, 

 mesosternum acutely emarginate, hind tibia; sparsely, coarsely jjuuctured, margined on the inner side, 

 but \vdthout a very distinct row of punctures. Front and middle thighs distinctly not densely punctured. 

 Length 9-7 m.m., -38 inch." 



" Marguette, Lake Superior ; one specimen. This species is as elongate as G. parallelus, but less 

 obtusely rounded, and is easily recognised by the peculiarly elongated meshes of the reticulation. The 

 prostemum is obtusely carinate." 



1299. Gaurodytes longulus, Lee, Proc. Am. Phil. Soc, 1878, p. 59G. North America. 



" Elongate-oval, obtuse at each end, not convex, shining, smooth black, with a slight metallic gloss. 

 Antenna?, palpi and feet tinged withjnceous. Prothorax with sides oblique, finely margined ; apical and 

 basal rows of punctures strongly marked. Elytra with the rows of punctures strongly marked. Pro- 

 stemum acutely carinate ; mesosternum deeply ; front and middle thighs punctured and rugose ; hind 

 tibia? smooth, with a few small punctures at the inner margin and some larger ones along the outer 

 margin. Length 9 m.m. ; -35 inch." 



" Mas. Smooth but not polished ; claws of front tarsi long, not toothed, curved only near the tip." 

 " Fern. Scarcely perceptibly punctulate ; claws of front tarsi not so long, and regularly curved." 

 "Lake Superior; the elytra vary from brown to black, with only the edge brownish. The form is 

 exactly as m G. parallelus, from which it differs gi-eatly by the other characters." 



1300. Gaurodytes lutosus, Crotch, Tr. Am. Ent. Soc. IV, p. 419. North America. 



" Ovate, convex, black, above bronzed ; legs, epipleurre and margins of ventral segments rufescent ; 

 thorax short, sides rounded, broadly margined, posterior angles obtuse ; elytra subopaque closely covered 

 vHth sliort anastomosing stria?, dor.sal series visible, confused behind ; posterior femora spai-sely [juuctulate, 

 tibiae punctate, tarsi with the last joint elongate. Mas, anterior tarsal claw obtusely dentate. Length 

 •40 inch." 



" Slave Lake, Kansas, Lake Superior. Posterior claws extremely small." 



According to a female indi^'idual recently received from Leconte, this appears to be the same as 

 Agabus nigro-aeneus Er. ; but a comparison of the males is desirable before the identification can be 

 considered cei-tain. — D. S. 



1301. Gaurodytes obovatus, Sahl., Not. fenn. XIV, p. 176. Russian Lapland. 



" Obovato-oblongus, modice convexus, postice obtuse rotiindatus, nigro-aeneus, elytris lateribus, anguste 

 indeterminatim, pedibus totis, antennis palpisque ferrugineo-testaceis, his articulo ultimo basali excepto, 

 illis ai-ticulis exterioribus apice piceis, elytris sublajvibus, prothorace lateriljus modice rotundato. Long. 

 3 liu." 



