ClCINDELID^E AND CARABID^ Jl 



and pubescence; prothorax small, three-fourths wider than the head, 

 the sides strongly rounded near the apex, thence nearly straight 

 and unusually oblique to the base; surface only very feebly but almost 

 evenly convex to the lateral bead throughout the length, the im- 

 pressions almost obsolete, the surface strongly and rather closely 

 punctate, becoming still more strongly and densely punctured 

 and rugose laterally, more broadly basally; sides apparently with a 

 single seta near the middle; elytra oval, scarcely a third longer than 

 wide and two-fifths wider than the prothorax, having contiguous 

 series of large and feebly convex tegulae, each having posteriorly a 

 small asperate puncture, the tegulse becoming smaller and more 

 tuberculiform at the sides and toward apex. Length (cf ) 15.0 mm.; 

 width 6.8 mm. Oregon zimmermanni Lee. 



Prothorax always more or less reflexed at the sides, although sometimes 

 scarcely visibly, the basal angles more strongly rounded and dis- 

 tinctly produced posteriorly 4 



4 Elytra with equal close-set striae and transverse grooves, forming 

 subquadrate, almost evenly convex tegulae, which do not become 

 notably altered in form or tuberculiform near the sides 5 



Elytra with the transverse lines separating the tegulae broader and arcuate, 

 the tegulae more pointed or asperate at their posterior ends and 

 laterally becoming smaller, more widely separated and strongly 

 tuberculiform 6 



5 Form stout, rather less convex, deep black, moderately shining; head 

 larger, two-thirds as wide as the prothorax, having large and very 

 obsolete rugae and minute, very sparse punctures; mandibles feebly 

 rugulose; antennae rather short, nearly as in the preceding but 

 much shorter than the head and prothorax, the latter very trans- 

 verse, fully twice as wide as long, the sides broadly rounded, be- 

 coming moderately oblique and nearly straight in about basal half, 

 the angles rather narrowly rounded and much produced; surface 

 rather finely but strongly, closely punctate and rugulose, becoming 

 rather deeply concave at the sides from base to apex and more 

 densely, coarsely punctured and rugose, the impressions rather deep; 

 elytra broadly oblong-oval, barely a fourth longer than wide, ex- 

 tremely narrowly reflexed at the sides, the tegulae becoming smaller, 

 much confused and graniform apically. Length (c?) 15.0 mm.; 

 width 7.5 mm. Wyoming striatulus Lee. 



Form much less stout, with much smaller head and prothorax, deep 

 black but more shining; head two-thirds as wide as the prothorax, 

 with fine sparse punctures and very obsolete rugulation, more 

 markedly punctate and rugulose laterally but not on the neck; 

 mandibles arcuate, finely, not strongly strigose; antennae much 

 longer, extending nearly to basal fourth of the elytra (d 71 ), a little 

 shorter (9); prothorax small, very much less transverse and more 

 narrowed basally, barely two-thirds wider than long, the sides more 

 strongly and more anteriorly rounded, very oblique and becoming 

 straight to the base, the angles narrowly rounded and sharply 

 produced; surface finely, sparsely punctate medially, the punctures 

 very gradually becoming coarse, close and rugulose laterally and 



