STAPHYLINID/E 123 



their length from the base, the tempora equally prominent, parallel 

 and but very feebly arcuate, the carinae very fine and only visible basally; 

 antennae black, testaceous basally and piceous at tip, short, rather thick, 

 gradually and markedly incrassate, the first three joints rapidly decreasing 

 in length, the third less than one-half longer than wide and strongly con- 

 stricted at base, fourth and following strongly transverse, the outer joints 

 rather more than twice as wide as long, the last obtusely ogival, a little 

 longer than the two preceding and somewhat paler; prothorax two-fifths 

 wider than long, subparallel, the sides subevenly and moderately arcuate, 

 the basal angles obtuse and somewhat rounded, the median line very 

 finely and feebly impressed throughout; elytra moderately transverse, 

 with evidently diverging and nearly straight sides, at base barely visibly 

 wider, the suture a fourth longer, than the prothorax; abdomen almost 

 as wide as the elytra, perfectly parallel, with virtually straight sides 

 to the tip of the fifth tergite, which is equal in length to the fourth, the 

 sixth ventral plate in the type evenly semicircular. Length 1.6 mm.; 

 width 0.31 mm. Pennsylvania (Buena Vista Spring, Franklin Co.). 



The single type taken under fallen leaves during a very dry season 

 in August last, near the summit of the Blue Ridge, represents a 

 species differing conspicuously from any other in the very small eyes; 

 in its rather small head it is allied somewhat to nugator, by which 

 character it chiefly differs from libens ( = sejuncta) and validiceps. 



Subgenus Adota Csy. 



The following species have come to light since my paper of 1910 

 appeared in print: 



Atheta (Adota) definita n. sp. Nearly parallel and subdepressed, 

 deep black, the elytra scarcely picescent, the legs pale piceo-flavate; 

 surface but very feebly shining and finely, densely micro-reticulate, the 

 abdomen more shining and with the minute sculpture in relatively 

 coarse, transversely wavy and broken lines; punctures fine, dense but 

 indistinct, very numerous and close-set throughout on the abdomen; 

 pubescence very short, close but inconspicuous; head four-fifths as wide 

 as the prothorax, suborbicular, but little wider than long, the eyes very 

 large, at half their length from the base, the tempora at first as prominent 

 as the eyes but rapidly arcuate and converging to the base, the carinae 

 strong though extending only a little beyond the middle; antennae rather 

 long and almost filiform, slender, piceous, slightly paler basally, the third 

 joint a little shorter than the second, fourth and following joints distinctly 

 elongate, gradually becoming shorter, the tenth as long as wide, the last 

 elongate-oval, scarcely so thick but as long as the two preceding; prothorax 

 a full third wider than long, parallel, the sides more rounded anteriorly, 

 converging and straighter thence to the base, transversely and feebly 

 impressed before the scutellum; elytra parallel, but little shorter than 

 wide, nearly flat, a fourth wider and nearly one-half longer than the 

 prothorax; abdomen parallel, with straight sides, much narrower than 



