196 



Coleopterological Notices, III. 



Second funicular joint slender, distinctly longer than the next two together ; 



vestiture more or less finely mottled 11 



4 — Elytra with a narrow, abruptly limited, densely pubescent and conspicu- 

 ous marginal or submarginal vitta; beak completely non-carinate 5 



Elytra generally not at all vittate, but having the vestiture sometimes con- 

 densed laterally and forming a broad feebly defined vitta 6 



5 — Pronotum with a small but distinct impression before the scutellum. 

 Lateral vitta of the elytra broad and less dense, not concealing the strial 



punctures 5 placidus 



Lateral vitta narrow and exceedingly dense ; form narrower, the pronotal 



punctuation coarser, deeper and more rugulose 6 amplexus 



Pronotum completely unimpressed, smaller species. 



Beak finely but strongly, moderately densely punctate, nearly straight. 



7 oregonus 

 Beak finely feebly and extremely sparsely punctate. 



Beak very feebly arcuate ; prothorax much wider than long ; body rather 



broadly oval 8 exi mills 



Beak strongly arcuate ; prothorax subquadrate ; body slender, convex 



and linear 9 tenellus 



6 — Form short, broad and more or less oval, the elytra never more than twice 



as long as wide ; small species 7 



Form elongate, generally subparallel, the elytra distinctly more than twice as 



long as wide 8 



■y — Beak finely and feebly but distinctly subcarinate ; elytra with a strong 



parallel-sided scutellar impression 10 marginatum 



Beak not at all carinate. 



Pronotum more or less broadly impressed throughout the length. 



11 miisculus 

 Pronotum feebly impressed toward base but not before the middle and with 

 coarse, sparsely placed punctures. 

 Broadly oval, the vestiture longer, denser and somewhat pubiform. 



12 parens 



Narrowly oval, the vestiture very short, sparse 13 pygmaeilS 



8 — Pronotum broadly flattened and impressed throughout the length or nearly 

 so, the impression always becoming deeper toward base ; rather large 



species 9 



Pronotum unimpressed or impressed only near the base ; small or moderately 



large species 10 



9 — Basal joint of the funicle as long as the second ; dorsal impression of the 

 pronotum extending throughout the length but becoming very feeble 

 toward apex. 

 Rather slender, the beak very slender, differing notably in the sexes, and, 



in the female, much longer than the prothorax 14 COlicavilS 



Somewhat robust, the beak stout, finely and feebly but rather distinctly 

 subcarinate, differing but little sexually and subequal in length to the 

 prothorax 15 mucidUS 



