328 Trans. Acad. Sci. of St. Louis. 



narrowed toward base, the angles minutely subprominent, the surface 

 not impressed at any point; elytra a third wider and longer than the 

 prothorax, subparallel, the humeri well exposed at base; abdomen 

 parallel with feebly arcuate sides, at the middle slightly wider than the 

 elytra, the punctures distinct and moderately close-set. Length 1.9 

 mm.; width 0.8 mm. Ohio (Cincinnati), — Chas. Dury. 



parviceps n. sp. 

 6 — Body black, shining, the antennae black, pale basally, the legs pale; 

 integuments feebly micro-reticulate throughout except the elytra; pubi- 

 ferous punctures fine and normal anteriorly but more asperate and 

 stronger than usual on the elytra and abdomen, the nude punctures on 

 the former very few in number and indistinct; antennae gradually but 

 much lesB strongly incrassate than in the four preceding species, the 

 second and third joints elongate and subequal in length, the eleventh 

 small, slightly pointed and barely as long as the two preceding com- 

 bined; prothorax moderately transverse, very feebly and narrowly im- 

 pressed along the median line behind the middle; elytra wider and 

 longer than the prothorax, the humeri but slightly exposed at base;^ 

 abdomen obviously wider than the elytra. Length 1.65 mm.; width 

 0.66 ram. New Jersey setigera Csy. 



6 — Antennae short, gradually and more or less strongly incrassate distally, 



the second joint very much longer than the third, which is constricted 



at base and but slightly elongate 7 



Antennae longer and more slender, but feebly incrassate distally, the third 

 joint elongate, more evenly obconlcal and but slightly shorter than the 

 second 15 



7 — Prothorax at most only very slightly narrower than the base of the 



elytra, the elytral humeri not noticeably or but very slightly exposed at 



base 8 



Prothorax very distinctly narrower than any part of the elytra, the humeri 

 generally well exposed at base 9 



8 — Moderately stout and convex, shining, black throughout, the last five 



antennal joints black, the basal part gradually paler, the legs pale; 

 punctures fine, not close-set, the pubescence only moderately long and 

 rather sparse ; integuments finely, not very strongly micro-reticulate,, 

 more coarsely on the elytra; head small, nearly as long as wide, 

 parallel, abruptly and obliquely constricted at base, the vertex im- 

 pressed in the middle; antennae but little longer than the head and 

 prothorax, strongly incrassate distally, the third joint very strongly 

 constricted or pedunculate at base; prothorax nearly one-half wider 

 than the head and two-thirds wider than long, the sides subparallel, 

 arcuately narrowed near the apex only, the surface feebly, transversely 

 Impressed before the middle of the base; elytra about a fourth wider 

 and fully a third longer than the prothorax, the sides feebly arcuate, 

 the humeri very narrowly exposed at base ; abdomen parallel, equal in 

 width to the elytra, shining, not conspicuously punctate. Length 1.& 

 mm.; width 0.61 mm. Idaho (Coeur d'Alene), — H. F. Wickham. 



montlcola n. sp. 



Moderately stout and convex, shining, piceous, the prothorax paler, rufous,. 



the head and abdomen blackish, the latter testaceous toward base ; an- 



