12 MEMOIRS ON THE COLEOPTERA. 



sparser vestiture; black or piceous-black, the legs bright, the elytra darker, 

 rufous, the latter feebly blackish basally; antennae dark, paler basally; 

 head parallel, convex, rather shining, the eyes at their own length from the 

 base, not very convex; antennae long and slender, the tenth joint much longer 

 than wide; prothorax large, very much wider than the head and only a little 

 narrower than the elytra, fully a fourth wider than long, the sides parallel, 

 broadly arcuate; surface finely, closely punctulate and with a small nearly 

 rounded feeble impression near the base; elytra subparallel, much wider than 

 long, the suture only a little longer than the prothorax, the surface feebly 

 convex, finely, closely and inconspicuously punctulate; abdomen wide, 

 slightly narrower than the elytra, parallel, minutely, not closely punctulate, 

 the sixth tergite broadly arcuate, becoming gradually feebly sinuate medially 

 at tip in the type, the sixth ventral broadly angulate, the angle rounded. 

 Length 3.3 mm.; width 0.8 mm. Wisconsin (Bayfield), Wickham. 



Differs from any other described species of the subgenus in its 

 more parallel and rather convex form. 



Atheta (Homalotusa ) wisconsinica n. sp. More slender and less parallel 

 than the preceding, piceous, the abdomen black, gradually bright rufous 

 apically; elytra and legs pale brownish-rufous, the former infumate basally 

 toward the scutellum, the antennae fuscous, paler very gradually basally; 

 head small, orbicular, the eyes at nearly their own length from the base; 

 antennee long, very slender, the second joint a little longer than the third, 

 the tenth very distinctly elongated; prothorax not quite a fourth wider than 

 long, parallel, with broadly and very moderately arcuate sides, much wider 

 than the head and correspondingly narrower than the elytra, minutely, 

 closely punctulate, the basal impression very feeble; elytra parallel, wider 

 than long, the suture distinctly longer than the prothorax, the slightly rough 

 punctulation very minute and close-set; abdomen only moderately wide, 

 much narrower than the elytra, minutely, sparsely punctulate, shining and 

 unusually flat, the fifth tergite very much longer than the fourth, the sixth 

 broadly and very evenly arcuate at apex in the type, and, behind this, 

 another segment, the surface of which is covered sparsely with stiff inclined 

 spinuliform hairs; sixth ventral moderately narrow, with the apex arcuato- 

 truncate. Length 3.5 mm.; width 0.75 mm. Wisconsin (Bayfield), Wick- 

 ham. 



This distinct species differs greatly from the preceding in the 

 more elongate fifth tergite, which in lacusttina is only about as long 

 as the fourth; also in its smaller prothorax, narrower abdomen, 

 larger eyes and other characters. The sex of the type is not evident. 



Anepsiota Csy. 



The species of this subgenus are moderately large in size, of 

 heavy build and unusually broad abdomen, this in the majority 

 being fully as wide as the elytra. The antennae in typical forms, 

 such as the type (A. quadricollis Csy.), are long and rather strongly 



