Casty — Observations on the Staphylinidae. 323 



distinctly punctured; hind tarsi stout, the basal joint not longer than 

 the next two combined ; male abdomen with dorsal tuberosities. 



Myrmoecla 



Middle coxae Tfidely separated, the mesosternal process being very broadly 



arcuato-truncate at tip ; integuments very finely sculptured, sometimes 



opaque 2 



S — Hind tarsi long and very slender, the first joint longer than the next 

 two combined; male without dorsal abdominal tuberosities. 



Myrmedonia 

 Hind tarsi slender but shorter, the basal joint much shorter than the next 

 two combined, the first three decreasing uniformly and rapidly in 

 length; male abdomen with tuberosities nearly as in Myrmoecia. 



Nototaphra 

 In general facies the three genera differ very greatly, owing 

 to sculpture, form of the head and prothorax and other 

 features. 



Apalonia n. gen. 



The very small type of this genus resembles Myrmedonia in 

 many respects but differs in its narrower neck, rather small 

 but prominent and somewhat coarsely faceted eyes, impunc- 

 tate integuments, strongly setose antennae and other charac- 

 ters. The structure of the intermesocoxal parts is much as 

 in Myrmedonia, the coxae being almost as widely separated 

 and the sternal structure apparently similar. The tarsi are 

 very slender and filiform, the basal joint of the posterior 

 somewhat longer than the next two combined. The type 

 may be defined as follows : — 



Body minute, parallel, strongly convex, highly polished, not at all micro- 

 retlculate, impunctate, the pubescence fine, rather short and extremely 

 sparse, each terglte with four long strong setae at apex and one on the 

 side margin; color pale rufo-testaceous throughout, the antennae dusky 

 distally and the fourth tergite black; head large, nearly as long as wide, 

 slnuato-truncate at base, the eyes abruptly prominent at the middle 

 of the sides; antennae attaining the tips of the elytra or longer, 

 slender basally, gradually and moderately incrassate distally, sparsely 

 pubescent but bristling with long setae, the subapical joints moderately 

 transverse, the eleventh pointed, slightly longer than the two pre- 

 ceding, the second and third equal in length; prothorax scarcely as 

 wide as the head, but little wider than long, widest and broadly 

 rounded at the sides anteriorly, thence feebly narrowed to the obtuse 

 and slightly rounded basal angles, the base broadly arcuate, the sur- 

 face strongly and evenly convex, not at all impressed; elytra trans- 

 verse, slightly wider than the prothorax and not quite as long, the 



