348 MEMOIRS ON THE COLEOPTERA 



a minute spicule; surface with the plications medially rather coarse 

 and shining, rarely having a smooth polished feeble callus, the 

 tubercles large but not much elevated, shining at summit, a little 

 stronger in the male; elytra four-fifths longer than wide, very coarsely 

 and notably closely, to less coarsely and more sparsely, punctate, 

 always more serially toward the sides, the raised lines very feeble 

 or obsolete; ante-median yellowish-cinereous chevron moderately 

 wide, disintegrating somewhat near the suture, the posterior region 

 of confused tawny and black maculation having very little cinereous 

 intermingled. Length (cf 9 ) 4.6-5.7 mm.; width 1.4-2.0 mm. 

 New Jersey and New York (Lake Champlain), westward to Indiana, 

 Wisconsin (Bayfield) and Colorado mixtus Hald. 



8 Form oblong-elongate, only feebly convex, more shining than usual; 

 head well developed, the black basal joint of the antennae unusually 

 bright red at base; prothorax as long as wide, much larger and with 

 base and apex subequal ( 9 ), the base much narrower than the apex 

 (cf), the lateral prominences very strong and spiniform, the tubercles 

 strong, with rather narrow polished summit, the intermediate de- 

 pression dull, finely, densely plicato-rugulose; elytra twice as long 

 as wide (9 ), distinctly shorter (d 71 ), much wider than the prothorax 

 and with rather prominently rounded humeri, the dense yellowish 

 fascia broad, very oblique, narrowing much at the suture and only 

 just visibly before the middle of the length, somewhat as in emargi- 

 natus, having a short internal ramus at basal fourth or fifth, which 

 tends to cross the suture as in that species, the posterior yellow 

 maculation confined to about apical fourth; punctures deep, rather 

 coarse posteriorly, less coarse and much closer basally, forming 

 approximate but not very regular geminate series externally in the 

 concave intervals; each elytron with three progressively elevated 

 lines, the inner feeble, the outer very strong, acute along the summit 

 and cariniform; apices feebly sinuato-truncate, the sutural angle 

 prominent posteriorly and obtusely dentiform, the outer angle 

 extremely obtuse and barely evident though not rounded. Length 

 (a 71 9 ) 5.9-7.5 mm.; width 1.9-2.4 mm. Montana, .fastigiatus n. sp. 



Form nearly as in the preceding, black, the prothorax and elytra clothed 

 with black-brown pubescence, intermixed, especially at the sides 

 and apex of the elytra, with gray, each elytron having laterally, 

 before the middle, a large white spot; thoracic tubercles distinct; 

 elytra coarsely, irregularly punctate, only the two lateral intervals 

 elevated, the surface between the inner and the suture having a series 

 of four condensed tufts of black hairs, the apices truncate. Length 

 6 mm. Alaska alaskanus Schf. 



Form and size apparently somewhat as in fastigiatus, nigro-piceous, with 

 variegated white pubescence and sparsely nigro-pilose; elytra toward 

 the suture confusedly, externally seriately, punctate, with a larger 

 oblique white area before the middle; apex rounded, not at all 

 truncate, the suture rather prominent, the external ridges scarcely 

 to be traced. Length 6 mm. Kansas simplex Lee. 



The species described above under the name fastigiatus, I should 



