io8 MEMOIRS ON THE COLEOPTERA 



converging anteriorly, the apex feebly sinuato-truncate, much 

 narrower than the base, which is transverse, the bead strong and 

 entire, the angles nearly right, narrowly blunted; surface convex, 

 rather steeply declivous at the sides to the somewhat coarse pallid 

 marginal gutter, which widens only slightly and very gradually 

 posteriorly, disappearing near the base; foveae very large, feebly 

 concave, coarsely and rather densely punctate, a few finer punctures 

 spreading over the feeble convexity thence to the sides; anterior 

 impression distinct and angulate medially only, the stria fine but 

 distinct, crossing the anterior impression; elytra nearly one-half 

 longer than wide and a fourth wider than the prothorax, the apex 

 obtusely ogival; sides parallel, feebly arcuate; sinus very feeble but 

 evident, the apices (9 ) very narrowly rounded; striae coarse, rather 

 deep, abrupt and groove-like, the scutellar long, the intervals flat; 

 puncture on the second stria only a little behind the middle; legs, 

 and especially the femora, unusually slender; basal joint of the hind 

 tarsi equal in length to the fifth; marginal grooves of the met- 

 episterna unusually coarse and deep. Length (9) 8.0 mm.; width 

 2.8 mm. Illinois (Urbana), -Hart and Hood . . . . gemmeus n. sp. 



35 Legs pale and clear flavo-ferruginous in color throughout 36 



Legs black or in great part dark 37 



36 Body very stout, oblong, narrowed anteriorly, not very convex, 

 piceous-black, the epipleura paler, the antennae and trophi testaceous, 

 the mandibles blackish; lustre moderately shining, the elytra (9) 

 densely sericeo-opaque; head scarcely more than half as wide as the 

 prothorax, the eyes moderately prominent; antennae slender, the 

 foveae minute; prothorax relatively small, parallel, one-half wider 

 than long, the sides broadly, subevenly arcuate, a little more con- 

 verging anteriorly, the apex feebly sinuate, with very broadly 

 rounded angles, evidently narrower than the transverse and finely 

 margined base, the angles being right but distinctly rounded; surface 

 steeply declivous to the very fine reflexed edge anteriorly, the gutter 

 widening and curving inward shallowly posteriorly, disappearing 

 at basal third, the foveae narrow, feeble, rectilinear, obsolescent 

 basally and impunctate, the impunctate area thence to the sides 

 but little flattened; stria fine, almost attaining the apex; basal and 

 apical regions with many fine longitudinal folds; elytra oblong, 

 broad and short, not a third longer than wide, fully a third wider 

 than the prothorax, parallel, with feebly arcuate sides and broadly 

 obtuse apex, the sinus extremely feeble; striae very fine and not deep, 

 the scutellar long, the intervals perfectly flat, the puncture behind 

 apical third; legs rather slender, the hind tarsi defective in the type. 

 Length (9) 8.2 mm.; width 3.5 mm. New Brunswick. 



plenalis n. sp. 



Body oblong, rather depressed, moderately shining, the elytra (9) 

 densely sericeo-opaque; color deep black above and beneath, the 

 epipleura not paler; antennae slender, they and the trophi testaceous; 

 mandibles black, rufescent ante-apically ; head slightly more than 

 half as wide as the prothorax, with moderate prominent eyes and 

 minute perforate foveae; prothorax one-half wider than long, the 



