STAPHYLINia^E. 25 



than their own length from the base, the carinae very fine, subentire; antennae 

 shorter, the outer joints more strongly transverse, the second and third 

 subequal; prothorax strongly transverse, parallel and rounded at the sides, 

 very nearly as wide as the elytra, much wider than the head; elytra moder- 

 ately transverse, much longer than the prothorax; abdomen evidently 

 narrower than the elytra, parallel though, as frequently the case, apparently 

 narrowing a little toward apex because of the narrowing of the side margins; 

 sixth tergite ( c?) more broadly truncate than in the two preceding, feebly 

 sinuate toward the middle, the lateral auriculae much reduced, narrow, 

 parallel externally; sterna similar; basal joint of the hind tarsi but little 

 shorter than the second. Length 2.2 mm.; width 0.56 mm. Rhode Island 

 (Boston Neck). 



Atheta ducens n. sp. Elongate, parallel; coloration nearly as in rho- 

 deana, alutaceous, the fine subgranular punctuation close, the abdomen 

 more minutely, very sparsely punctulate and shining; head small, the eyes 

 prominent, at much less than their own length from the base, the sides behind 

 them arcuate and rapidly converging, the carinae fine, subentire; antennae 

 moderate, the outer joints distinctly transverse, the second much shorter 

 than the third; prothorax only about a third wider than long, much wider 

 than the head and slightly though evidently narrower than the elytra, the 

 parallel sides much more feebly arcuate than in any of the preceding; elytra 

 slightly transverse, distinctly longer than the prothorax; abdomen parallel, 

 much narrower than the elytra, the sixth tergite (cf) trapezoidal, formed 

 nearly as in rhodeana, the truncate apex feebly sinuate, the edge even, the 

 adjoining surface feebly and broadly corrugated, the auriculae slightly more 

 posterior than the median part, short, rounded, inclined upward externally 

 and rather thick; sterna as in the preceding species. Length 2.7 mm.; 

 width 0.6 mm. New York (Catskill Mts.). 



Distinguishable by its less transverse prothorax, with the parallel 

 sides very feebly arcuate. 



Atheta gnoma n. sp. Moderately stout, parallel; coloration as usual, 

 the dark parts blackish-piceous; surface rather strongly shining, the minute 

 granuliform punctures moderately close-set; head well developed, larger 

 than usual, the eyes at less than their own length from the base, the carinae 

 fine but entire; antennae moderately stout, the outer joints distinctly trans- 

 verse, the second and third shorter than usual, equal in length, the former 

 cylindric, the latter obconic; prothorax short, very transverse, distinctly 

 wider than the head but only just visibly narrower than the elytra, subparallel, 

 with moderately rounded sides, the median line very feebly impressed; elytra 

 distinctly transverse, much longer than the prothorax; abdomen as usual, 

 the sixth tergite (d") trapezoidal, truncate, the truncature gradually evenly 

 though feebly sinuate in median half, the adjoining surface even, with a 

 transverse series of asperate punctures, the auriculae parallel, rather narrow, 

 nearly straight and abruptly reflexed externally, narrowly rounded at apex 

 but not posteriorly prominent; sterna as usual, the short basal joint of the 

 hind tarsi not as long as the second. Length 2.2-2.5 mm.; width 0.48-0.58 

 mm. New York (Catskill Mts.). 



