8o CASEY 



thorax anteriorly more or less distinctly angulate or prominently and 

 narrowly rounded, especially in the female 5 



5 — Elytral depressions not or but slightly rugose, having fine dense punctures 

 nearly as in virginiensis 6 



Elytral depressions with larger, somewhat separated punctures, giving a 

 much more coarsely rugulose appearance 7 



6 — Elytra posteriorly more gradually obliquely narrowed, with the sides 

 only very feebly arcuate; females only at hand. Body very elongate, 

 moderately convex, shining, black, the depressions and the under sur- 

 face bright cupreous; head well developed, irregularly punctate; an 

 area along the eyes, much wider than in hondnrasica and a little wider 

 than in virginiensis, finely, densely sculptured, the frontal pit deep 

 and nearly as in the latter; eyes smaller and still more remotely sep- 

 arated; prothorax nearly as in virginiensis, except that the median 

 densely punctate impression is broader and somewhat shallower and 

 the dividing median Hne very much wider and less convex; elytra nearly 

 as in virginiensis but much more elongate, about twice as long as wide, 

 the sides posteriorly with more obsolete or scarcely traceable serrula- 

 tion, the apical angles broadly rounded, thence narrowly subtransverse 

 to the suture; under surface with the usual moderately coarse, sparse 

 punctures, with lateral patches of fine, dense and more metallic punc- 

 tuation, the ashy hairs not conspicuous though rather long. Length 

 (9) 26.5-28.5 mm.; width 9.0-9.8 mm. California. [ = Bnprestis 

 angulicollis Lee] angulicoUis Lee. 



A — Nearly as in angulicollis but rather narrower and more convex, more 

 sombre in coloration, the depressions dull subcupreous or bronzed, 

 the under surface black, with feebly cupreous and finely punctured 

 areas; prothorax less transverse, with less obvious anterior angula- 

 tion at the sides, as in angulicollis very slightly wider at the angula- 

 tion than at base, with the intervening sides tending to bisinuation; 

 elytra nearly similar but with the sculpture of the depressions evi- 

 dently less fine. Length ($) 24.5-26.5 mm.; width 8.5-9.0 mm. 

 Colorado (Boulder Co.) montana n. subsp. 



Elytra posteriorly more rapidly converging and rounded at the sides, or, 

 evidently more obtuse. Body somewhat broader in form and rather 

 less convex, shining, black, the dej)ressions of the upper surface bronzed, 

 the lower surface less brightly cupreous; head nearly similar, the eyes 

 not prominent; prothorax more transverse, much more abru]>tly prom- 

 inent at the sides at apical third (9) or not very markedly so (c?), the 

 general surface more flattened basally, the sculpture nearly similar; 

 elytra similar in general sculpture but with the raised polished spaces 

 larger and less abruptly defmed and the sides more deeply sinuate at 

 about two-fifths from the base, much less than twice as long as wide; 

 metasternum more concave in both sexes, with unusually long and 

 coarse white hairs in the male. Length (c?*, 9) 24.0-28.0 mm.; 

 width 8.5-10.0 mm. Washington State and Idaho (Fort C(uur 

 d'Alene) oregonensis Fitch 



