Coleopferological Notices. 349 



Section I. 

 Elytral striae rather distinctly impressed ; integuments pale and thin. 



Epistoma subangularly and feebly lobed in the middle texailUS 



Epistoma rather narrowly and feebly sinuate at apex, without trace of 

 median lobe ; pronotum narrowly and feebly subexplanate at the sides. 



marginatus 

 Elytral striae not at all impressed. 



Pronotum abruptly rugulose near the sides, the rugae long, nearly even and 

 strongly elevated ; color rufo-piceous to piceous-black ; integuments thick 



and dense longulus 



Pronotum with merely semi-coalescent and shallower punctures or short 

 confused rugae toward the sides. 

 Prothorax widest near the base, the sides convergent and feebly arcuate 

 thence to the apex ; color pale ; integuments thin ; form narrow and 



very elongate angustlis 



Prothorax much shorter, with more strongly arcuate sides ; integuments 

 thick and dense, piceous-black ; form short and robust piceilS 



Section II. 



Base of the prothorax broadly distinctly bisinuate. 



Oval, dark rufo- testaceous ; elytra distinctly wider than the prothorax; 

 sides of the latter broadly, evenly arcuate throughout discretlis 



Elongate, parallel, black ; sides of the prothorax convergent and nearly 



straight from behind the middle to the apex COIlicicollis 



Base of the prothorax transversely truncate. 



Elytra with well-marked unimpressed series of approximate punctures. 



Integuments highly polished COliVCXIIS 



Integuments very dull suljopacus 



Elytra without trace of series, evenly but irregularly punctured throughout ; 

 lustre strongly alutaceous ; color pale ferruginous ; form very broadly 

 oval pinguis 



Section III. 

 Eyes large, very prominent laterally, the tempora completely obsolete behind 

 them punctatus 



Section IV. 

 Basal angles of the prothorax obtuse, never prominent, sometimes very nar- 

 rowly rounded. 

 Sides of the prothorax moderately arcuate. 



Elytral striae very distinctly impressed ol>esilS 



Elytral striae not at all impressed. 



Color black ; upper surface moderately convex. 



Larger species ; lustre alutaceous ol)tllSUS 



Smaller, polished ; punctures toward the middle of the pronotum 

 very much sparser ater 



