STAPHYLINID/E. 31 



aciculate, the metasternum rather broad, angulate; first four joints of the 

 hind tarsi equal. Length 2.0 mm.; width 0.45 mm. British Columbia 

 (Glenora) , Wickham. 



Distinct in its male sexual characters but otherwise of ordinary 

 appearance and small size. 



Atheta dunni n. sp. Moderately stout and convex, strongly shining 

 throughout, the punctures minute, sparse, not asperulate, slightly closer 

 but scarcely at all asperulate on the elytra; color black, the elytra dark 

 piceo- testaceous, the legs dark piceous, the antennae blackish throughout; 

 head small, orbicular, even, the punctures becoming granose on the flanks, 

 the eyes moderate, the carinae fine, not quite entire; antennae rather slender, 

 moderately incrassate, the outer joints distinctly transverse, the second dis- 

 tinctly shorter than the third; prothorax rather small, transverse, parallel 

 and rounded at the sides, much wider than the head and much narrower than 

 the elytra, not deep black in color; elytra rather transverse, much longer than 

 the prothorax; abdomen very distinctly narrower than the elytra, parallel, 

 very slightly narrowed apically, the fifth tergite longer than the fourth, the 

 sixth (cf) broadly truncate and nearly even at apex, the truncate part sepa- 

 rated from a very small acute process at each side, not projecting posteriorly 

 further than the truncature, by a small deep sinus; mesosternal process obtuse 

 and subtruncate at tip, moderately wide, not drawn out and aciculate, the 

 metasternal broad but acutely angulate, the intervening space much depressed; 

 basal joint of the hind tarsi apparently longer than the second. Length 2.85 

 mm.; width 0.65 mm. Southern California (probably near Julian), Dunn. 



Easily identifiable by the sternal structure, which is somewhat 

 aberrant for true A tlieta and by the seemingly somewhat elongate 

 basal joint of the hind tarsi. 



Atheta claricella n. sp. Rather stout, moderately convex, shining, very 

 minutely and not distinctly punctulate, the abdomen finely, feebly and trans- 

 versely strigilate but not very closely; color pale rufo-testaceous throughout, 

 the abdomen with a more or less small blackish subapical cloud, the antennae 

 pale brown, testaceous basally; head moderate, the eyes rather prominent, 

 at nearly their own length from the base, the carinae extremely fine and feeble, 

 far from entire; antennae moderate in length, very stout and incrassate distally, 

 the second joint somewhat shorter than the third, the outer joints transverse 

 and nearly parallel-sided; prothorax transverse, parallel and rounded at the 

 sides, much wider than the head and evidently narrower than the elytra, the 

 latter large, moderately transverse, the sides diverging from base to apex, much 

 longer than the prothorax ; abdomen rather wide but narrower than the elytra, 

 the fifth tergite longer than the fourth; mesosternal process rather obtuse, 

 truncate and not aciculate at tip, the metasternal moderately projecting and 

 angulate, the intermediate space broadly convex and scarcely at all depressed. 

 Length 2.25 mm.; width 0.72 mm. California (San Diego). 



This species, as represented by the three specimens in my cabinet, 

 does not seem to have any clearly marked male sexual characters, 

 but it is to be known at once by its peculiar coloration. 



