252 MEMOIRS ON THE COLEOPTERA 



elongate, sharply angulate scutellum and relatively less elongate 

 interstrial space on the prosternum. Behind the middle coxae on 

 the metasternum, there is a raised subimpunctate and rounded 

 plaque. The elytra, toward base externally, generally have a few 

 oblique and unevenly eroded lines and, on the convex flanks, the 

 entire single line is very distinct. They form a distinct subgeneric 

 group of Acritus, which may be known as Pycnacritus (n. subgen.), 

 with type Acritus discus Lee. The true Acritus may be regarded as 

 having exiguus Er., for its type species. 



Acritus sternalis n. sp. Body very broadly and evenly elliptic, moder- 

 ately convex, shining, pale testaceo-ferruginous in color; head micro- 

 reticulate, feebly punctulate; antennal joints three to eight forming an 

 equal and slender funicle, the segments of which alternate in length 

 throughout; prothorax not quite twice as wide as long, the sides strongly 

 converging from base to apex and evenly, moderately arcuate; punctures 

 very fine, becoming even finer and not closer laterally, the ground sculp- 

 ture feebly micro-reticulate, becoming slightly more strigilate laterally; 

 elytra distinctly shorter than wide, much narrowed at the truncate apex, 

 circularly rounded at the sides, the punctures very fine, rather close set, 

 mingled with feeble anastomosing scratches; pygidia very feebly punc- 

 tulate, micro-reticulate; prosternal interstrial surface about a third 

 longer than wide, narrowest far anteriorly, the striae greatly diverging 

 thence to the base, which is very much wider than the apex. Length 

 1.15 mm.; width 0.78 mm. New York (Catskill Mts.), H. H. Smith. 



Differs from discus Lee., from Georgia and Alabama, which is 

 piceous-black and with the surface flatter, in its larger size, less 

 close or substrigilate elytral sculpture toward the suture and, 

 particularly, in the posteriorly more diverging prosternal striae; 

 the plaque behind the middle coxae is more broadly rounded at 

 apex. The apex of the mesosternum in this group is truncate 

 medially, with a small sinus at each side, along a slightly concave 

 surface defined by feeble oblique carinae extending to the coxal 

 cavities. 



Acritus repletus n. sp. Broadly oval, rather convex, shining, black, 

 the legs dull rufous; head micro-reticulate, very sparsely punctulate, 

 closely toward the eyes; antennae piceous, the funicle nearly as in the 

 preceding but somewhat more elongate; prothorax nearly similar in 

 outline, micro-reticulate, very finely punctulate, rather closely so medi- 

 ally, more finely and sparsely laterally; elytra nearly similar, much 

 shorter than wide, the punctures very fine but deep, not very close-set, 

 mingled toward the suture with very fine longitudinal scratches, which 

 are independent of the punctures; ground sculpture feebly, that of the 

 pygidium strongly and densely, micro-reticulate, the latter-impunctate; 



