280 MEMOIRS ON THE COLEOPTERA 



4.6-5.0 mm.; width 1.8-1.9 mm. Rhode Island, New Jersey and 



Maryland fuscatus Dej. 



23 Body rather stout, moderately convex, shining, black, the periphery 

 of the pronotum very finely pale and the elytral suture generally 

 pallescent; under surface blackish-piceous, the epipleura but little 

 paler, the legs very pale flavo-testaceous; head about two-thirds as 

 wide as the prothorax, with moderately prominent eyes; antennae very 

 long, filiform, more than half as long as the body, blackish, the basal 

 joint pale; prothorax almost exactly as in plebejus throughout; elytra 

 shorter, not one-half longer than wide, a third wider than the pro- 

 thorax, parallel, with distinctly arcuate sides and very obtuse apex, 

 the sinus very feeble; striae as in plebejus, except that the scutellar 

 is obsolete or vestigial, this being almost a unique condition in the 

 genus; hind tarsi as in plebejus, except that the basal joint is not quite 

 so long, being somewhat shorter than the next two and equal in 

 length to the fifth, the anterior and intermediate tarsi (cf ) very 

 moderately but subequally dilated, the intermedate relatively much 

 more so than in plebejus. Length (cf ) 4.2 mm.; width 1.5 mm. New 

 York (West Point). Western Pennsylvania, Hamilton. 



humidus Ham. 



24 Body oblong, rather small in size, depressed, pale rufo-testaceous in 

 color, the head, and the elytra broadly at each side of the suture 

 posteriorly, feebly infumate; under surface in great part piceo- 

 testaceous, the legs pale; head two-thirds as wide as the prothorax, 

 the eyes unusually small and not very prominent; antennae long, 

 slender, filiform, feebly compressed, more than half as long as the 

 body and pale testaceous throughout; prothorax a third wider than 

 long, widest near apical third, the sides anteriorly strongly rounded, 

 becoming oblique and feebly arcuate posteriorly; apex strongly 

 sinuate, with distinct and scarcely at all blunt angles and equal in 

 width to the base or somewhat narrower; basal angles only moderately 

 broadly rounded, rather distinct; surface feebly depressed near the 

 hind angles and impunctate, the foveae not differentiated; stria 

 extremely fine but subentire; elytra short, two-fifths longer than 

 wide and barely a foiuth wider than the prothorax, somewhat 

 widest behind the middle, very obtuse at apex, the apices oblique 

 and nearly straight, the sinus obsolete; striae very fine, the scutellar 

 moderately long, parallel; intervals nearly flat; discal puncture at 

 apical sixth; hind tarsi with the basal joint not quite as long as the 

 next two, equal to the fifth; male with the anterior tarsi rather 

 strongly, the intermediate moderately, dilated. Length (cf 9 ) 4-2- 

 4.6 mm.; width 1.6-1.8 mm. California (San Francisco). Not un- 

 common unicolor Dej. 



A Similar to unicolor in nearly all structural features but relatively 

 narrower and more elongate, clearer testaceous, the elytra without 

 the subsutural clouded area, the prothorax relatively not so large, 

 the elytra much more elongate, being fully one-half longer than 

 wide and sometimes nearly two-fifths wider than the prothorax. 

 Length (cf) 4.2-4.5 mm.; width 1.5-1.6 mm. California (Los 

 Angeles Co.) dolosus n. subsp. 



