348 Goleopterological Notices, VII. 



prothorax and more than 3 times as long; sides parallel and very feebly 

 arcuate; apex obtuse, with very feeble sinuation; strife pronounced through- 

 out the width, feebly punctulate, the interv-als perceptibly convex. Under 

 surface and legs deep black and polished throughout. Length 14.5 mm.; 

 ■width 6.0 mm. 



Lake Superior (Bayfield). 



The smaller size of the body, still more distinct outer strise, and 

 wider basal angles of the prothorax, will readily distinguish this 

 species from impressicoUis, in addition to the characters of the 

 table. 



D. cliens. — Rather stout and quite convex, deep black throughout, the 

 upper surface somewhat strongly shining, the head polished. Head moderate in 

 size, not distinctly more than }4 ^^ wide as the prothorax, convex, the eyes 

 moderately prominent and the neck scarcely constricted ; frontal impressions 

 rather shallow ; mandibles extremely minutely and remotely punctulate toward 

 tip ; palpi slender, piceous, the apices of the joints paler ; antennae slender, 

 but slightly longer than the head and prothorax, the basal joint but slightly 

 thicker. Prothorax % wider than long, widest at the middle where the sides 

 are rather broadly rounded, thence feebly convergent and straight to the basal 

 angles, which are slightly more than right ; apex % as wide as the base ; sur- 

 face broadly convex, flattened and broadly depressed toward the basal angles, 

 the impression rather feeble ; median line fine. Elytra barely % longer than 

 wide, fully % wider than the prothorax and barely 3 times as long ; sides par- 

 allel and distinctly arcuate ; striae subobliterated toward the sides, rather deep 

 toward the suture, not evidently punctulate. Length 15.0 mm. ; width 6.5 mm. 



Kansas. 



Allied somewhat to laticoUis but more convex, and with more 

 oval and convex and much less alutaceous elytra, less prominent 

 eyes and less obliterated sublateral striae of the elytra ; it is de- 

 scribed from the female. LaticoUis occurs at Austin, Texas, in 

 its normal form. 



D. nupera. — Moderately stout and convex, deep black and strongly shin- 

 ing throughout. Head small, orbicular, convex and highly polished, the eyes 

 moderate in size and prominence ; frontal impressions rather shallow ; palpi 

 blackish-piceous, the last joint gradually pale in apical half ; antennae short 

 and slender. Prothorax more than % wider than long, widest behind the mid- 

 dle, the sides broadly arcuate, only very feebly convergent and feebly sinuate 

 toward the basal angles, which are more than right and not at all blunt, con- 

 verging and broadly arcuate anteriorly ; apex scarcely more than % as wide as 

 the base ; surface broadly and moderately convex, fiat toward the basal angles, 

 the impression deep and longitudinally sulciform ; median line fine. Elytra 

 scarcely % longer than wide, about }-{ wider than the prothorax and scarcely 

 3 times as long ; sides parallel and feebly arcuate ; apex rather acute, the sin- 



