STAPHYLINID^:. 103 



bescence shorter and finer; head much smaller, three-fifths as wide as the 

 prothorax, distinctly transverse, the eyes large and prominent, at three- 

 fourths their length from the base, the tempora much less prominent 

 and strongly arcuate to the base, the carinae fine and entire; antennae 

 only moderately long, black, pale basally, only moderately and gradually 

 incrassate, the third joint a little longer than the second and as long as 

 the first, fourth a little longer than wide, fifth to tenth but little wider than 

 long, the last gradually narrowed to the subacute apex and fully as long 

 as the two preceding; prothorax large and notably convex, not quite 

 two-fifths wider than long, the sides very moderately rounded, parallel, 

 sensibly more converging before the middle, the median line very broadly 

 and obsoletely impressed in more than basal half, with a small rounded 

 impression at base; elytra but slightly transverse, with evidently di- 

 verging and nearly straight sides, at base not obviously wider than the 

 prothorax, the suture two-fifths longer; abdomen much narrower than 

 the elytra, parallel, with feebly and evenly arcuate sides and rather 

 thin deep margins, the fifth tergite a little longer than the fourth, the 

 sixth (9) broadly, feebly sinuato-truncate medially, the sixth ventral 

 broadly arcuato-truncate. Length 2.7 mm.; width 0.7 mm. Rhode 

 Island (Boston Neck). 



Differs greatly from either of the two preceding in its much smaller 

 head, larger or less transverse prothorax and other features. The 

 metasternal projection is narrower than in reformata and as ad- 

 vanced as in tradita, the point rather acute. 



Atheta vierecki n. sp. Rather stout, subparallel, moderately convex 

 and shining, black or piceous-black, the abdomen feebly pallescent 

 at apex, the pale tawny elytra feebly infumate suturo-basally and just 

 visibly or obsoletely so postero-externally, the legs pale; punctures small, 

 rather close and strongly asperate, finer, sparser and parted by a broad 

 punctureless line on the head, minute but rather numerous on the abdo- 

 men, which is more shining and with the minute sculpture only moderately 

 close, irregularly and very transversely polygonal and feeble; pubescence 

 rather long and coarse, pallid; head relatively small, only three-fifths as 

 wide as the prothorax, slightly wider than long, the eyes moderately 

 convex, at three-fourths their length from the base, the tempora sub- 

 evenly arcuate and converging behind them to the base, the carinaa 

 fine, not entire; antennae rather long, only very moderately incrassate, 

 blackish, pale basally, the second and third joints equal, fourth distinctly, 

 the fifth slightly, longer than wide, the outer joints only very moderately 

 transverse, the last fully as long as the two preceding; prothorax large, 

 fully one-half wider than long, parallel but only very feebly arcuate at 

 the sides, which are rapidly rounded at apex, the base rounded with the 

 angles obtuse but unusually distinct, the small ante-scutellar impression 

 very feeble, rounded; elytra slightly transverse, subparallel, only just 

 perceptibly wider than the prothorax and two-fifths longer; abdomen 

 distinctly narrower than the elytra, gradually and very slightly narrowing 

 posteriorly, the fifth tergite but little longer than the fourth, the sixth 



