STAPHYLINID^. 43 



pubescence pale, abundant and distinct; head wider than long, fully 

 three-fifths as wide as the prothorax, subparallel and feebly rounded 

 at the sides, the eyes moderately large; antennae short and slender, 

 only slightly incrassate and infumate, paler basally, the third joint 

 only a little shorter than the second, the outer joints very moderately 

 transverse, the last small, pointed beyond the middle and not quite 

 as long as the two preceding; prothorax about one-half wider than long, 

 the sides strongly converging and only moderately arcuate from the 

 very obtuse and blunt basal angles to the apex, the base rounded, the 

 surface with a very feeble ante-scutellar impression; elytra large, but 

 very little shorter than wide, not quite parallel, at base equal in width 

 to the prothorax, the suture fully a third longer, the apical sinuses dis- 

 tinct; abdomen rather slender, distinctly narrower than the elytra, 

 parallel, tapering slightly toward apex, the fifth tergite moderately 

 transverse, one-half longer than the fourth; side margins not noticeably 

 thick. Length 1.9-2.7 mm.; width 0.46-0.58 mm. Arizona (Tugson). 



A slender form, varying remarkably in the size of the body and 

 having large elytra, a comparatively small prothorax, well developed 

 head and short, slender antennae. 



Oxypoda lenis n. sp. Still more slender, more parallel and more 

 shining, similar in coloration, the punctures less dense, more strongly 

 asperulate and, toward the abdominal apex, becoming very remote on 

 the fifth tergite two or three times as sparse as in sedula; head relatively 

 still larger, nearly three-fourths as wide as the prothorax, inflated slightly 

 at base, wider than long, the eyes larger, more convex and at but little 

 more than half their length from the base, the antennae nearly similar 

 though having the second joint much longer than the first or third; 

 prothorax still smaller and shorter, more than one-half wider than long, 

 the sides strongly rounded basally, thence strongly converging and nearly 

 straight to the apex, the base rounded, the angles obtuse and broadly 

 rounded, the surface not noticeably impressed; elytra parallel, with feebly 

 arcuate sides, about as long as wide, fully as wide as the prothorax or 

 wider, the suture nearly one-half longer, the apical sinuses broader than 

 in the preceding; abdomen much narrower and more parallel, the fifth 

 tergite only just visibly narrower than those preceding, relatively 

 shorter than in sedula, the side margins still thinner. Length 2.4 mm.; 

 width 0.52 mm. New Mexico (Coolidge), Wickham. 



Though related more particularly to the preceding, this species 

 may be separated readily by the larger head and eyes, shorter 

 prothorax, more rounded at the sides basally, longer elytra and 

 narrower, more parallel abdomen, the latter being much more 

 remotely punctate apically. 



Oxypoda agitata n. sp. Much stouter than either of the two pre- 

 ceding, rather shining, the abdominal asperities dense throughout, 

 moderately dense on the elytra; pubescence pale, rather close, coarser 



