io8 MEMOIRS ON THE COLEOPTERA 



feeble crenules, the tarsi rather long and slender. Length (cf 9 ) 

 13.0-14.0 mm.; width 5.0-5.7 nam. California (Humboldt Co.). 



cuneatulus n. sp. 



15 Head moderately large, distinctly more than half as wide as the 

 prothorax; body only feebly convex, deep black, with blackish- 

 brown legs, shining, the elytra of the female only a little less shining; 

 head with the anterior impressions rather fine, widely separated, 

 the epistoma and labrum sinuato-truncate; antennae rather stout, 

 extending behind the thoracic base; prothorax nearly a fifth wider 

 than long, the sides feebly rounded, very slightly converging, be- 

 coming straight or just visibly sinuate to the angles, which are right 

 to slightly obtuse and rather sharp, the edges fine and even, not at 

 all crenulate; base very broad, feebly sinuate in about median third, 

 margined except medially and only very slightly less than the 

 maximum width; surface feebly convex, the median line sharply 

 impressed, being sharply defined at the bottom of a rather conspicu- 

 ous impression, the inner of the lateral impressions rather long and 

 moderately deep, the external short, sharply limited externally, 

 the intermediate surface not depressed; elytra oblong, with broadly 

 arcuate sides, a third to fourth wider than the prothorax, one-half 

 longer than wide, evenly and not very obtusely rounded behind, 

 almost similar in the sexes, finely but deeply striate, the striae not 

 distinctly punctate, the intervals feebly convex, nearly flat suturally; 

 hind tibiae (cf) finely and feebly serrulate within, the tarsi not quite 

 so long or slender as in the preceding group. Length (cf 9 ) 12.0- 

 14.0 mm.; width 4.5-5.2 mm. California (Lake Tahoe, Big Trees, 

 Placer and Siskiyou Cos.) planctus Lee. 



Head nearly similar but rather more elongate and with slightly larger 

 eyes, fully three-fifths as wide as the prothorax, the latter nearly as 

 long as wide, or slightly transverse (9 ), the side margins fine and 

 absolutely devoid of crenulation, much more rounded than in the 

 preceding, distinctly converging and broadly, feebly sinuate basally, 

 the angles right, scarcely blunt, the base only very feebly sinuate 

 medially, margined except at the middle and five-sixths the maximum 

 width, the surface evidently convex, as in the preceding, except that 

 the inner of the basal impressions is still larger and the surface thence 

 to the sides convex, with a small feeble and sometimes evanescent 

 impression; elytra more oval, with more arcuate sides, parallel, 

 not obtusely rounded at apex, three-fifths longer than wide, a fourth 

 to nearly a third wider than the prothorax, with rather fine but deeply 

 impressed and impunctate striae and strongly convex shining intervals 

 throughout in both sexes, barely perceptibly less shining in the female; 

 humeral denticle almost obsolete; tarsi longer and more slender 

 than in planctus. Length (cf 9 ) 11.4-13.0 mm.; width 4.2-5.0 mm. 

 Oregon (Clackamas Co.) to Vancouver Island (Victoria). One 

 example is labeled " Kansas, Snow " but almost certainly in error. 

 \algidus Lee.] validus Dej. 



Head smaller, rather short, but little more than half as wide as the pro- 

 thorax, the epistoma sinuato-truncate, the labrum rectilinearly; 

 body very shining, blackish-piceous to dark castaneous, small 



