June igoo.] CaSEY : On NoRTH AMERICAN COLEOPTERA. 83 



darker, extending slightly beyond the base of the prothorax, the latter very 

 slightly narrower than the elytra in the male, more distinctly so in the female, 

 nearly twice as wide as long, the sides parallel and feebly arcuate, abruptly 

 sinuato-convergent near the base, the basal angles right and not blunt, the apical 

 obtusely rounded, the base broadly bisinuate ; punctures sparse and rather 

 coarse ; elytra fully three and one-half times as long as the prothorax, parallel 

 and broadly arcuate at the sides, the apex rather narrowly rounded ; humeri 

 somewhat exposed at base ; disk more or less impressed at the suture on the pos- 

 terior declivity before the apex. Length I.8-1.9 mm.; width 0.75-0.8 mm. 

 Middle States and Rhode Island (Boston Neck) impressus Lee. 



Punctures of the elytra! series each bearing an infinitesimal hair only visible under 

 great amplification, the surface throughout polished and apparently perfectly 

 glabrous ; antennse and prothorax similar to those of impressus, the elytra simil- 

 larly between three and four times as long as the prothorax, narrowly rounded at 

 apex and with somewhat basally exposed humeri 3 



3 — Body dark rufous or rufo-piceous in color, the punctures of the head and prothorax 

 fine and very sparse, the superciliary ridges fine and scarcely at all flexed inward 

 anteriorly ; elytral series scarcely at all impressed, the punctures more or less 

 small in size. Length 1. 9-2. 1 mm.; width 0.78-0.8 mm. New Jersey. 



subglaber, sp. nov. 



Body black or blackish in color, the punctures of the head and prothorax coarse but 

 sparse, the superciliary ridges coarse and strongly bent inward anteriorly ; elytral 

 series sensibly impressed, the punctures coai'se and deep. Length 1.8 mm.; 

 width 0.75 mm. Florida imbellis, sp. nov. 



Body rufo-testaceous in color, smaller and more slender in form ; superciliary ridges 

 very fine, feeble and not flexed inward at their anterior end ; punctures of the 

 head and pronotum fine but deep and very sparse ; elytral series not or scarcely 

 at all impressed, the punctures fine but distinct. Length i. 6-1. 75 mm.; 

 width 0.65-0.7 mm. Bahamas (Egg Island) and Cuba (Bahia Honda). 



insularis, sp. nov. 



4 — Body elongate-elliptical, rather less convex, the elytra more strongly narrowed be- 

 hind from about the middle, polished, blackish-piceous in color, the elytral 

 humeri and apical fourth testaceous ; antennae, head and prothorax nearly as in 

 impressus, the latter sparsely clothed with longer pubescence, finely and rather 

 less sparsely punctate and much less declivous toward the sides ; elytra quite dis- 

 tinctly wider at or just before the middle than at base ; slightly wider than the 

 prothorax and nearly four times as long, subacute at apex, the humeri but slightly 

 exposed at base, the series unimpressed, composed of rather small but distinct 

 punctures, the intervals also with uneven series of smaller, still more widely 

 spaced punctures, all the punctures bearing distinct subdecumbent hairs, the 

 entire surface being sparsely pubescent. Length 2.0 mm.; width 0.9 mm. 

 Mexico (Frontera in Tabasco). Prof. C. H. T. Townsend. 



puberulus, sp. nov. 



The lateral edges of the prothorax in all the species are distinctly 

 thickened and bear a few very minute widely spaced serrules, one be- 

 hind the apex being especially constant ; the thickened margin is 



