270 MEMOIRS ON THE COLEOPTERA 



the middle. The sculpture is generally rather fine and dense, but 

 becomes coarser in the Atlantic coast species, which differ also in 

 their more slender form and more slender antennae, which are less 

 opaque near the base. The prothorax is campanulate, with the 

 basal angles laterally prominent and acute in the western species, 

 but not at all so in the Atlantic species; the sides are sometimes 

 prominent medially. The vestiture is very short throughout, a 

 little longer and less erect on the prothorax of the eastern represen- 

 tatives. The species so far as known to me may be thus defined in 

 brief, matthewsi being the type: 



Species of the Pacific coast, stout, the prothorax strongly campanulate; 

 lustre rather dull almost throughout 2 



Species of the Atlantic coast, more slender, the prothorax less cam- 

 panulate, broadly rounded to obtusely angulate at the sides but 

 with the basal angles not at all prominent; antennae more slender, 

 not opaque throughout 3 



2 Hind body shorter, the elytra very rapidly cuneiform (cf ), or feebly 

 so with more rounded sides (9); head and prothorax finely, ex- 

 tremely densely punctate and dull, the elytra with moderately 

 coarse, very close-set punctures, becoming fine apically, the apices 

 obtuse, not evidently truncate, the angles all rounded; tarsi moder- 

 ate, the posterior (cf) distinctly shorter than the tibiae. Length 

 (cf) 10.0-14.0, (9) 12.0 mm.; width (cf) 3.2-4.8, (9) 4.4 mm. 

 California (Sta. Cruz Co.) matthewsi Lee. 



Hind body more elongate, the size larger, the male antennae still more 

 elongate, more than one-half longer than the body, the last joint 4 

 mm. in length in the type, the fifth 2.6 mm. ; prothorax more strongly 

 and distinctly punctate, the punctures dense but becoming well 

 separated medially, except anteriorly, the surface feebly and broadly 

 impressed along the middle from about the centre to the broad apical 

 constriction; elytra longer, more gradually cuneiform (cf), or less 

 cuneiform, with slightly arcuate sides posteriorly and much broader 

 (9); the punctures nearly similar but less close-set; tarsi much 

 longer, the posterior (cf ) as long as the tibiae, or distinctly shorter 

 (9 ) Length (cf ) 14.6, (9 ) 17.0 mm.; width (cf ) 4.8, (9 ) 6.2 mm. 

 California (Gualala, Mendocirio Co.) macrocera n. sp. 



3 Body moderately slender, convex, somewhat shining, pale luteous 

 throughout, excepting a small blackish external medial spot on 

 each elytron and the head, which is piceous and densely, rugosely 

 punctate, the tempora broadly rounded and transverse, more parallel 

 near the eyes; antennae about a fourth longer than the body, slender 

 and filiform; prothorax barely as long as wide, moderately narrowed 

 at apex, rounded on the sides, biconstricted, the surface somewhat 

 channeled medially between the constrictions, the punctures rather 

 coarse, sparse, uneven in distribution; elytra only moderately cunei- 

 form, rather obtuse at apex, the truncatures sharply defined and 



