408 Coleopterological Notices. 



Pronotum finely, sparsely punctate toward the middle, more coarsely and 

 densely so laterally; surface somewhat shining; prothorax larger and 



longer; form of body more elongate SUlilaevis 



Punctures of the pronotum and elytral intervals exceedingly minute, sparse. 



Elytra normal, coarsely, deeply striate, the strife with very coarse, impressed 

 and uneven punctures; intervals convex lewisi 



Elytra abruptly declivous near the base, without impressed strije, but with 

 series of very fine, widely but unevenly spaced punctures, the intervals 

 flat laevissimus 



These four forms are specifically distinct, there being no known 

 intergrad.es; lewisi in fact differs more radically from sublsevis 

 than the latter does from the European croaticus. 



I. laevissimilS n. sp. — Robust, subparallel, rather strongly convex^ 

 smooth and finely alutaceous, the pronotum rather more shining than the 

 elytra. Head rather longer than wide, somewhat coarsely but sparsely punc- 

 tate ; antenna? very robust. Prothorax about one-half wider than long, the 

 apex truncate and very distinctly narrower than the base, the latter trans- 

 verse and broadly, feebly bisinuate ; basal angles acute and prominent ; sides 

 parallel and strongly arcuate in apical two-thirds, then strongly convergent 

 and sinuate to the base, very coarsely and unevenly crenulate ; disk rather 

 strongly convex, declivous toward the sides which are very narrowly reflexed, 

 very sparsely and minutely punctate, more coarsely but scarcely more densely 

 so very near the sides. Elytra just visibly wider behind, two thirds longer 

 than wide, gradually narrowed and pointed through apical third, about three 

 and one-half times longer and nearly one-third wider than the prothorax ; 

 humeri rounded ; disk abruptly declivous from a short distance behind the 

 base to the basal margin, very smooth but alutaceous, the stria? feebly indica- 

 ted by very fine and nearly obsolete longitudinal creases. Length 23.5 mm. ; 

 width 9.3 mm. 



California (Sierras). Mr. W. G. W. Harford. 



This is one of the largest species known to me, and is very dis- 

 tinct from lewisi in its much more robust form, more transverse 

 prothorax, declivous base of the elytra and unimpressed stria?. 



The two species Isevissimus and leivisi are further distinguished 

 from serratns and sublsevis by the somewhat longer head, less 

 widely flattened and explanate sides of the pronotum and truncate 

 apex, the apex of the prothorax being relatively wider and broadly, 

 feebly sinuate in the latter of the two groups. 



Blapstini. 



The characters originally employed by LeConte and subsequently 

 followed by Horn in the classification of our genera of Blapstini, 

 do not seem to be sufficiently concise or decisive to distinguish the 



