STAPHYLINID.E. 63 



dark testaceous, broadly and indefinitely clouded with blackish except 

 basally and at apex, the legs pale; head large, subquadrate, wider than 

 long, the eyes prominent, at much more than their own length from the base 

 and in the same longitudinal line with the feebly rounded tempora, the carinae 

 a little longer than in the two preceding but extremely feeble and obsolescent; 

 antennae differing greatly, a little longer, stout, gradually distinctly incras- 

 sate, dark brown, the first joint stouter but equal in length to the second, 

 the latter but little longer than the third, which is narrowed basally but not 

 constricted, the outer joints distinctly but less strongly transverse, the last 

 more pointed; prothorax moderately transverse, just visibly widest before 

 the middle though with the sides moderately and subevenly arcuate, evi- 

 dently narrower than the elytra and only very slightly wider than the head, 

 the median line feebly and evanescently impressed; elytra slightly shorter 

 than wide, truncate, much longer than the prothorax; abdomen much nar- 

 rower than the elytra, feebly narrowed apically, with the usual thin margins, 

 the fifth tergite not notably long, the sexual characters feeble. Length 1.7 

 mm.; width 0.38 mm. Rhode Island (Boston Neck). 



This species is well differentiated by its large subquadrate head, 

 coloration and antennal characters; the sunken ridge extending 

 anteriorly from the extremely short and broadly subangulate meta- 

 sternum is narrow and sublaminiform, the four basal joints of the 

 hind tarsi equal. 



Atheta (Hilara) nugator n. sp. Smaller, not parallel, similar in sculpture, 

 the vestiture very inconspicuous, not at all dense; color rufo-piceous, the elytra 

 darker than the prothorax; head and abdomen black, the latter dark rufous 

 apically and through the two basal segments, the legs very pale; head small, 

 very shining, about as long as wide, the eyes convex, at more than their 

 own length from the base, the tempora much less prominent, parallel and 

 then broadly rounding, the carinse as in unigena; antennae rather short and 

 stout but only very feebly incrassate distally, piceous, faintly paler basally, 

 the basal joint stout and much longer than the second, which is two-thirds 

 longer than wide and much longer than the third, the latter only a little 

 longer than wide, obconic, with straight sides but not at all constricted basally, 

 the outer joints only very moderately transverse; prothorax nearly as in 

 validiceps throughout but much wider than the head, distinctly narrower 

 than the elytra, which are shorter than in the preceding species, transverse, 

 the suture evidently though not greatly longer than the prothorax; ab- 

 domen relatively broader and only a little narrower than the elytra, other- 

 wise nearly as in validiceps, the metasternal projection much more advanced 

 and acutely angulate. Length 1.65 mm.; width 0.33 mm. Rhode Island 

 (Boston Neck). 



Readily distinguishable by its smaller size, very much smaller 

 head and retracted tempora. 



Atheta (Hilara) iibens n. sp. Similar in sculpture, lustre, pubescence and 

 coloration to validiceps, the head large but more transverse and differing 



