94 Journal New York Entomological Society. [Vol. vm. 



Elytral punctures more or less coarse and much less close-set, frequently quite sparse, 

 the surface strongly shining throughout ; pronotal callous spots generally con- 

 spicuous 8 



7 — Elytral punctures moderately close-set, the surface strongly shining ; prothorax 

 evenly convex, rather strongly and closely punctate, the nodes of the apical 

 angles moderately prominent, much shorter than the sinus separating them from 

 the median denticles ; antennal club moderately broad ; elytra two-thirds longer 

 than wide Length 2.1 mm. ; width o. 8 mm. Alaska bidetltatus Makl. 



Elytral punctures extremely dense, the entire surface rather dull in lustre ; prothorax 

 less convex and more uneven, two-thirds wider than long, the truncated nodes 

 large and more prominent, though not unciform behind, and but little shorter 

 than the sinus between them and the denticles ; elytra more than three times as 

 long as the prothorax and a little wider, three-fourths longer than wide ; antennal 

 club well developed and rather broad. Length 2.3 mm. ; width o.SS mm. 

 Colorado confertus, sp. nov. 



8 — Truncate node of the thoracic angles very large, though only moderately promi- 

 nent, distinctly longer than the sinus separating it from the median spicules, the 

 truncature elliptical, flat and sharply defined, the prothorax equally wide at apex 

 — that is between the posterior angles of the truncatures — and at the middle, the 

 median tooth short and broad, uncifoi'm posteriorly, the punctures rather coarse > 

 deep as usual and only moderately close-set, the callous spots rather distinct, es- 

 pecially in the male ; elytra much larger in the female than in the male, not wider 

 than the prothorax in the latter ; pubescence rather long but sparse, the subserial 

 hairs long, suberect and conspicuous. Length 2.3-2.7 mm.; width 0.9-1. 15 

 mm. New Jersey nodif er, sp. nov. 



Truncate node of the thoracic angles rather small, always much shorter than the sinus 

 separating it from the denticles, the truncature narrow, convex and very acute 

 posteriorly 9 



9 — Elytra rather oblong-oval, more elongate and less strongly rounded at the sides, 

 never more than slightly wider than the prothorax 10 



Elytra oval, relatively more convex, more narrowly rounded behind and always very 

 much wider than the prothorax 14 



10 — Node of the thoracic angles very small and not acute or angulate posteriorly from 

 a vertical viewpoint ; body pale ferruginous throughout ; prothorax rather finely 

 but deeply, only moderately closely punctate, a little narrower at apex than at 

 the middle, the callous spots large and conspicuous, though not much elevated ; 

 elytra only moderately coarsely and rather sparsely punctate ; pubescence long, 

 coarse and conspicuous throughout, pale ochreo-cinereous in color ( 9 )• Length 

 2.3 mm.; width 1. o mm. Indiana? parvinoda, sp. nov. 



Node of the thoracic angles better developed, with the posterior extremity very 

 acutely prominent and unciform from a vertical point of view, the prothorax sub- 

 equally wide at the middle and apex 11 



II — Pubescence moderately long and suberect, sparse 12 



Pubescence short and more closely decumbent, even, the longer hairs subobsolete....l3 



12 — Body blackish-piceous in color, the pronotum rather paler and the elytra dark 

 testaceous ; pronotum evenly convex, rather coarsely and closely punctured, the 

 callous spots very distinct, rather small and scarcely elevated ; elytra about two- 



