256 THK CANADIAN ENTOMOLOGIST. 



2 — Elytra more gradually narrowed behind from only slightly behind the 

 middle, the apex acutely ogival, their surface coarsely and very 

 irregularly punctate, with the foveae deep and evident. Northern- 

 regions 3. 



Elytra more rapidly converging and rounded in about apical third, except 

 in LeContei. Regions near San Francisco and to the southward. . .4 



3 — Pronotum rapidly and deeply declivous laterally toward apex, so that 



the anterior angles are scarcely at all observable from a vertical 



viewpoint, the rugae obsolescent medially. Length, £ , r2.5-13.5r 



?, 1 4.0-1 5.5 mm.; width, $, 4.7-5.0, V, 5 5~5- 8 mm - Oregon and 



Washington State Audouini, Rche. 



Pronotum and general form of the body as in Audouini, except that the 

 elytra are more elongate, more obtuse at apex, elliptical, less convex, 

 similarly devoid of humeri in the male, and rather less irregularly,, 

 though very coarsely punctate ; the head and labrum similar, except 

 that the upper surface is coarsely and deeply rugose throughout, 

 without smoother or punctate medial anterior region, the pronotum 

 similar in form but deeply and conspicuously rugose throughout,, 

 almost as strongly as in Califomicus ; colour deep black. Length, ct , 

 14.0 mm.; width, 5.1 mm. Probably Northern California. 



mimus, n. sp. 



Pronotum not rapidly declivous laterally, with the apical angles fully 

 visible from above. Body deep black, more shining than in 

 Audouini ; head more strongly bi-impressed, feebly rugose, finely r 

 sparsely punctate medially toward the epistoma, the labrum with a 

 broadly trapezoidal projection and very few widely-spaced punctures, 

 not broadly arcuate medially as in the two preceding ; prothorax 

 rather more transverse and relatively larger, moderately obtrapezoidal r 

 with feebly and subevenly arcuate sides, the side margins coming far 

 from attaining the basal bead, the surface rugose, less obsoletely so- 

 medially than in Audouini ; elytra three-fifths longer than wide, only 

 about a third wider than the prothorax, with less evident humeri in 

 the female, but nearly similar, though rather less irregular sculpture. 

 Length, ?, 14.8 mm.; width, 5.5 mm. Oregon . . . .boreaiis, n. sp. 



4 — Pronotum strongly and deeply vermiculato-rugose throughout 5 



Pronotum feebly, though very evidently rugose, and likewise subequally 

 so throughout ; size generally larger, the form tending to greater 

 elongation 6- 



