216 MEMOIRS ON THE COLEOPTERA 



Pronotum with an obtuse carina at each side of the base, subparallel 

 and rather close to the lateral edge 2 



Pronotum without a lateral carina 5 



2 Prothorax narrower at base than at apex, the carinae short and feeble. 

 Body elongate, parallel, shining, black, the legs piceous; head two- 

 thirds as wide as the prothorax, the eyes very moderate, slightly 

 prominent; antennae rather slender, piceous, slightly paler basally, 

 but little more than half as long as the elytra, the fifth joint very 

 nearly twice as long as wide; prothorax one-half wider than long, 

 the sides strongly rounded anteriorly, notably oblique behind the 

 middle, becoming deeply sinuate and then parallel and straight in 

 about basal eighth, the right angles very sharp, the edges moder- 

 ately reflexed; apex deeply and conspicuously sinuate, the base 

 truncate; surface with minute scattered punctures, in addition to 

 the strong reticulation, depressed, the anterior impression narrow, 

 close to the apex, the posterior shallow and indefinite but strongly 

 angulate medially; at each side of the base there is a shallow depres- 

 sion, limited externally by the short carina or fold; elytra unusually 

 elongate, fully three-fourths longer than wide, two-fifths wider than 

 the prothorax, gradually parabolic in about apical third, subparallel, 

 with feebly arcuate sides and rather broadly rounded humeri; pedi- 

 cel a little over a third the subbasal width; about four fine, feeble 

 and shallow striae can be traced, the surface unusually shining; 

 fovese near one and five sevenths. Length 2.8 mm.; width i.i mm. 

 Wisconsin (Bayfield), Wickham angulata n. sp. 



Prothorax as wide at base as at apex or wider, the apex more shallowly 

 sinuate; sides not so abruptly sinuate at base 3 



3 Sides of the prothorax broadly and gradually sinuate basally and evi- 

 dently converging, becoming parallel before the angles, the carinae 

 short as in the preceding. Coloration and lustre as in the pre- 

 ceding, the reticulation relatively coarse and strong throughout; 

 legs similar; head three-fifths as wide as the prothorax, the eyes de- 

 cidedly small but prominent, the antennae slender, piceous-black 

 throughout, but little over one-half as long as the elytra, the fifth 

 joint about twice as long as wide; prothorax fully three-fifths wider 

 than long, rather wider at base than at apex, widest at anterior two- 

 fifths, the sides broadly arcuate anteriorly; basal angles right and 

 sharp; base truncate; surface as in angulata throughout, the median 

 stria rather wider, shallowly impressed; elytra much broader, more 

 oblong-oval, barely more than one-half longer than wide, scarcely 

 two-fifths wider than the prothorax, the parallel sides much more 

 arcuate and more broadly reflexed than in angulata, the humeri 

 scarcely so broadly rounded; five shallow striae are more or less dis- 

 tinctly traceable, the foveae near one-fifth and two-thirds. Length 

 2.75-2.8 mm.; width 1.2 mm. Minnesota (Duluth). Two exam- 

 ples, taken by the writer kirbyi n. sp. 



Sides of the prothorax but very feebly converging from the broad and 

 feeble anterior arcuation and almost straight, never more than just 

 visibly and very broadly sinuate, the hind angles sharply defined 

 however 4 



