STAPHYLINID^E. 



95 



remainder moderately stout, fuscous and densely puberulent. the second 

 and third joints equal, fourth very little wider than long, the outer joints 

 one-half wider than long, the last narrowly oval, pointed, barely as long 

 as the two preceding; prothorax short and wide, three-fifths wider than 

 long, parallel and rounded at the sides, the median line feebly impressed, 

 joining a small feeble ante-scutellar impression; elytra large, flat, moder- 

 ately short, subparallel, about a fifth or sixth wider and nearly one-half 

 longer than the prothorax; abdomen rather wide, slightly narrower than 

 the prothorax, parallel, with nearly straight sides, the fourth and fifth 

 tergites equal. Length 1.9 mm.; width 0.6 mm. New York (Catskill 

 Mts.). 



Allied to gnoma but stouter, with larger head and still more 

 developed and prominent eyes, larger, less transverse, flatter and 

 more albid elytra and broader abdomen. 



Atheta diffisa n. sp. Much less stout, more parallel and more convex, 

 shining, the punctures asperulate and rather close-set, finer and sparser 

 on the abdomen, where the reticulation is polygonal and rather large; 

 pubescence rather short, pale; color piceous-black, the head black, the 

 elytra pale luteo-flavate, with the outer apical angles and suture blackish 

 and the abdomen black, the first two segments evidently, and apex very 

 faintly, paler, the legs pale; head large, transverse, nearly four-fifths as 

 wide as the prothorax, the eyes prominent, at half their length from the 

 base, the tempora less prominent but rather tumid, the fine carinae entire; 

 antennae moderate, piceous, pale basally, moderately stout, the second 

 joint longer than the third, which is strongly obconic and less than twice 

 as long as wide, fourth distinctly transverse, the tenth about two-thirds 

 wider than long, the last gradually pointed and as long as the two pre- 

 ceding; prothorax nearly as in the preceding, except that it is smaller and 

 with the median line only obsoletely subimpressed; elytra much shorter 

 than wide, not flat, the sides feebly diverging, only very slightly wider but 

 a third longer than the prothorax; abdomen distinctly narrower than the 

 elytra, parallel, the fifth tergite fully a third longer than the fourth; sixth 

 (cf ) with a feeble median sinus at apex, limited at the sides by broadly 

 rounded and very feeble tumid angles, each of which is separated from 

 the large but feeble and broadly rounded ear-like lateral process by a 

 feeble sinus, not half as wide as the median sinus. Length 1.75 mm.; 

 width 0.53 mm. New York (Catskill Mts.). 



This species is also allied to gnoma, differing in its smaller but 

 rather more incrassate antennae, with more transverse joints, in 

 its shorter elytra and much more broadly rounded lateral ear-like 

 processes of the sixth male tergite ; also in the more narrowly para- 

 bolic sixth ventral plate of that sex. 



Atheta nata n. sp. Very small, rather slender and but feebly convex, 

 subparallel, slightly shining, the abdomen polished and with the rather 

 large micro-reticulation somewhat transverse; punctures fine, asperulate, 



