Casey — Observations on the Staphylinidae. 173 



stoma," suggested by me some time ago (Annals N. Y. 

 Acad. Sci., VII, p. 289) seems to be a mere printer's error, it 

 becomes necessary to use the name above given, which was 

 published in 1885 (Cont. Descr. and Syst. Col., II, p. 123). 

 In this genus the body becomes more depressed in form than 

 in any of our other types of Aleocharae except Pinalochara, 

 and the integuments are duller because of minute reticula- 

 tion and granulation, than in any except Maseochara, and, even 

 there, the abdomen is polished and not minutely reticulate as 

 it is here. The pubescence also becomes rather conspicuous, 

 pale, close and erect though never very long. In Emplenota 

 and all others of the following o-enera of this subtribe, the 

 prothorax differs greatly from that of Rheochara in being rela- 

 tively smaller as a rule and parallel or nearly so at the sides. 

 The mesosternal process is not materially wider than in 

 Rheochara but is more abbreviated, extending usually to about 

 apical third of the acetabula, and is subacute to narrowly 

 truncate at tip ; the metasternal projection is correspondingly 

 longer, though separated from the tip of the mesosternal by 

 the same depressed discontinuity of surface, w^hich is only 

 slightly variable in longitudinal extent within the limits of the 

 genus. The species, like those of Eucharina, appear to be 

 confined to the ocean beaches, those of our fauna being char- 

 acterized as follows: — 



Species of the Atlantic coast. Body unusually slender, finely granulato- 

 reticulate and dull, the abdomen feebly reticulate and polished, the 

 pubescence stiff, fulvous and distinct, black, the elytra more or less 

 rufo-piceous, the legs and antennae blacki^-h, the tarsi slightly paler; 

 head nearly four-fifths as wide as the prothorax, parallel, slightly in- 

 flated and arcuate at the sides behind the moderate eyes, rather abruptly 

 narrowed at base, strongly, somewhat closely punctured, impunctate 

 along the median line, the antennae shorter and more slender than 

 usual, rather feebly incrassate distally, about one-half longer than the 

 head; prothorax small, scarcely a fifth wider than long, the sides 

 arcuate, rather more strongly convergent and straighter toward base 

 than apex, the latter ful'y as wide as the rounded base; angles very 

 obtuse, the punctures rather impressed, coarse and distinct, moderately 

 close; surface flattened toward the middle; elytra well developed, only 

 slightly transverse, the sides very much longer than the sides of the 

 prothorax, the suture as long as the median line, the disk much wider; 

 punctures moderately fine, rather strongly impressed and close-set; 



