Casey — Observations on the Staphylinidae. 179 



the abdomen, they are small but very close-set and rugose 

 throughout, not differing materially in the concave depres- 

 sions of the three basal tergites. We have as yet but a 

 single species which may be described as follows : — 



Moderately stout, convex, alutaceous, piceous-black, the elytra rufous, be- 

 coming nubiiously black about the scutellum and obliquely at each side, 

 more broadly toward apex, each abdominal segment rufescent toward 

 tip above and beneath; antennae fuscous, the basal parts and legs 

 throughout pale testaceous; pubescence fine, subdecumbent, dense 

 and rather conspicuous; head three-flfths as wide as the prothorax, 

 finely, rather closely, the latter still more finely and very closely punc- 

 tate; eyes unusually prominent; antennae as long as the head and 

 prothorax, the basal joints slender, the second and third equal, 

 fourth to the tip much stouter but increasing only very slightly out- 

 wardly, compact, the tenth nearly twice as wide as long, the eleventh 

 well developed, longer than the two preceding combined and fully as 

 wide, ogivally pointed; prothorax strongly transverse, compactly joined 

 to the elytra, the base exactly as wide as the base of the latter but slightly 

 narrower than the apical parts, the sides strongly converging from 

 base to apex and evenly, moderately arcuate, the surface very evenly 

 convex; elytra well developed, fully one-half wider than long, the 

 sides much longer than those of the prothorax, the suture fully as 

 long as the median line, the punctures floe and dense; abdomen dis- 

 tinctly narrower than the elytra, parallel, arcuately narrowing pos- 

 teriorly, finely, very closely and evenly punctured throughout; meso- 

 sternal process extending fully to apical fifth of the coxal cavities, the 

 metasternal very short, broadly parabolic, between the posterior ends 

 of the cavities some five times as wide as long; basal joint of the hind 

 tarsi as long as the next two combined. Length 3.0 mm. ; width 1.0 mm. 

 Pennsylvania (Westmoreland Co.), — P. J. Schmitt nebnlosa n. sp. 



Some time ago one of my European correspondents sent 

 me a specimen under the name Aleochara lugubris, which 

 is placed in the catalogues as a synonym of moerens Gyll., 

 under the subgeneric name Baryodma. On examining 

 this specimen I found the hypomera to be feebly inflexed 

 and in considerable part visible from the sides, and there- 

 fore conclude that it is not the species stated, but — the 

 antennae being rather stout and compact — a representa- 

 tive of Rheodiara and assume that it represents the unique 

 type of that genus, named spadicea by Erichson. The 

 present species, described above from the mountains of 

 Pennsylvania, is exactly congeneric, but is stouter, less 

 parallel and with finer, less densely crowded punctuation. 



