30 Memoirs on the Coleoptera 



Third joint subequal in length to the fourth to a little shorter. [Section 



Paranchomenus nov,] 13 



2 — Pro thorax transverse; surface only moderately convex. Black, the 

 tibiae and tarsi piceo-rufous, shining, the elytra (9) less polished; 

 head elongate, three-fourths as wide as the prothorax, with large 

 and remarkably prominent eyes, the anterior impressions parallel, 

 rather long and distinct; palpi obscure rufous, the last joint longer 

 than the third; antennae piceous, black at base, slender, two-fifths 

 as long as the body, the third joint fully a tiiird longer than the 

 fourth; prothorax nearly a third wider than long, widest before the 

 middle, the sides well refiexed, more broadly at base, subevenly 

 rounded, becoming slightly oblique and straight basally to the 

 angles, which are more than right but with the tips acutely promi- 

 nent; base feebly oblique at the sides, equal in width to the rather 

 deeply sinuate apex, the apical angles obtusely rounded; anterior 

 impression deep, the posterior obsolete, the fovese broadly concave, 

 slightly elongate; surface with numerous fine transverse ruguliform 

 lines, finely and sparsely punctulate in the foveal region, the median 

 stria distinct and subentire; elytra oblong, parallel, three-fourths 

 longer than wide, not quite twice as wide as the prothorax, the basal 

 and lateral cariniform lines uniting in a broadly, evenly rounded arc 

 at the humeri; sides scarcely arcuate; apical sinus deep and con- 

 spicuous, the tips rounded and lobiform; striae rather coarse, nearly 

 smooth; intervals only very slightly convex; tarsi strongly grooved 

 externally. Length (9) 12.0 mm.; width 4.4 mm. Michigan 



(Marquette), — Sherman inquisitor n. sp. 



Prothorax as long as wide or very nearly; upper surface strongly convex 

 as a rule, the elytra subequally polished in both sexes and usually 



with very convex strial intervals 3 



3 — Species of the Lake Superior and Atlantic regions; elytral striae deep, 



sulciform 4 



Species occurring exclusively on the Pacific coast from northern sub- 

 arctic regions to southern Mexico 7 



4 — Basal thoracic angles obtuse, with somewhat bluntly subprominent 

 tips. Rather elongate, moderately convex, deep polished black 

 throughout in both sexes; head well developed, slightly elongate, 

 rhomboidal, with rather large and prominent eyes and short, deeply 

 impressed, parallel anterior sulci; antennae piceous, the first three 

 joints black, fully half as long as the body; prothorax a little wider 

 in the female, the sides broadly, subevenly rounded and broadly 

 refiexed, becoming gradually more oblique but scarcely at all sinu- 

 ate behind; base and apex equal, both strongly beaded, the apex 

 moderately sinuate and with rather blunt angles; anterior im- 

 pression deep, angulate, the posterior feeble, the stria fine but im- 

 pressed, not entire; fovese large, broadly concave and more or less 

 punctate; elytra fully three-fourths longer than wide and three- 

 fourths wider than the prothorax, the apex not abruptly obtuse and 

 with broad and very distinct sinus; sides sharply refiexed, the 

 ninth stria fine, much nearer the edge than to the eighth, the ocellate 

 punctures large, irregularly spaced; striae very deep, evidently 



