124 AMERICAN COLEOPTERA 



Metasternum and first ventral segment nearly or quite impunctate, but marked 

 with numerous longitudinal ruga-, which are parallel on the first ven- 

 tral, but on the metasternum radiate from moderately deep post-eoxal 

 fovea?. 

 Punctures of elytral striae coarse, as wide as or slightly wider than the inter- 

 spaces; a little finer, but deep and distinct to apex. 



crassipuncfatus. 

 Punctures of elytral stria? much finer, narrower than the interspaces, be- 

 coming subobsolete at apex fief lis. 



2. Tempora nearly as long as the eyes, slightly divergent. mini n*. 



Terupora less than half the length of the eyes, suliparallel or convergent pos- 

 teriorly 3. 



I!. Metasternum finely but distinctly punctate, without, or with but faint traces 

 of longitudinal rugae near the coxa'. 

 First ventral segment finely punctate ; post-coxa] fovea? of metasternum 

 feebly developed ; elytra impressed behind the base. 

 Elytra more elongate-oval, color blackish blown, legs and antenna? rufous : 



antenna' reaching the hind angles of the prothorax vail 11*. 



Elytra more broadly oval, color ferruginous brown, legs and antenna? 



nearly concolorous; antenna? distinctly shorter IIKMKiil \ . 



First ventral segment not evidently punctate, and bearing (in the % at 

 least) two minute bristle-like spines near the middle of the posterior 

 margin ; post-coxal fovea? of metasternum deep ; elytra not impressed 



behind the base venfralis. 



Metasternum with the sides more or less longitudinally rugose. 



Punctures of elytral series much narrower than the interspaces, which are 

 flat or nearly so; antenna? shorter, reaching but little beyond the 

 middle of the prothorax. 

 Elytra more broadly oval, scarcely visibly impressed behind the base, the 

 punctures coarser; margins of both prothorax and elytra a little 

 broader and more reflexed ; head entirely devoid of longitudinal 



sulcus cordatus. 



Elytra less broadly oval, distinctly impressed behind the base, punctures 

 finer: margins of prothorax and elytra somewhat less broadly re- 

 flexed ; head with distinct, median, longitudinal sulcus. 



feiiuicoriiis. 

 Punctures of elytral series much coarser, nearly as wide toward the base as 

 the interspaces, which are there decidedly convex : antenna' reaching 

 the hind angles of the prothorax sulcaf ii Ins 



E, protensicolli* Mann. — Elongate, suliparallel. feebly con vex, color vary- 

 ing from testaceous to In-own, the thorax usually a shade darker than the elytra, 

 the latter often with an elongate sutural strip darker, in the anterior half. 

 Head about as long as wide, rugosely punctate and channeled ; eyes moderate, 

 prominent, tempora a little shorter than the eyes, visibly divergent: antenna? 

 not quite reaching the hind angles of the pronotum, tenth joint about as wide 

 as long; all others, except the first, distinctly elongate. Prothorax a little wider 

 than thi' head, as long as wide or very nearly so, front angles lobed, sides nearly 

 parallel behind the angles: surface closely rugosely punctate; median channel 

 shallow, its sides feebly interrupting the subbasal transverse depression, which 



