Casey — Observations on the Staphylinidae. 237 



arcuate posteriorly; abdomen parallel, arcuate at the sides, in the middle 

 fully as wide as the elytra, minutely and very sparsely punctulate 

 throughout, the impressions with numerous coarse and unevenly dis- 

 tributed punctures. Length 2.2 mm. ; width 0.56 mm. Florida. l=zFala- 



gria part. Lee] partita Lee. 



Body equally email but broader posteriorly, the head and prothorax rela- 

 tively narrower, the elytral humeri more broadly exposed, polished, 

 similar in coloration and vestiture throughout; head transverse, inflated 

 toward the truncate base, the hind angles more broadly rounded, the 

 punctures extremely minute and sparse ; antennae stout, very strongly 

 incrassate distally, but little longer than the head and prothorax, the 

 subapical joints strongly transverse; prothorax small, as long as 

 wide, very much narrower than the head, formed nearly as in partita, 

 the sides somewhat sinuate and very strongly convergent toward base, 

 the punctulation throughout excessively flue and sparse, scarcely at all 

 closer or more distinct on the convex slopes of the deep median sulcus; 

 scuteilum closely granose, the granules parted along the the middle as 

 in the preceding; elytra fully four-fifths wider and about two-flfths 

 longer than the prothorax, similarly sculptured and with the suture 

 conspicuously impressed behind the scuteilum ; abdomen parallel with 

 the sides feebly arcuate, at the middle fully as wide as the elytra, 

 finely, sparsely punctulate, the impressions with few coarse punctures, 

 the latter almost wholly wanting in the third impression ; fourth tergite 

 feebly concave and wholly sculptureless along the basal margin as in 

 partita. Length 2.3 mm. ; width 0.63 mm. Florida (southeast coast). 



floridana n. sp. 



The species are rather numerous and will require care in 

 discrimination ; they are divisible into two subgeneric groups 

 as indicated above, the first comprising the larger species 

 with more rounded base of the head, more abruptly sinuate 

 sides of the prothorax from before the middle to the base, 

 coarsely and densely punctate abdominal impressions, longer 

 antennae and unimpressed intermesocoxal parts, with the 

 median part of the short mesosternal process projecting into 

 a corresponding sinus in the apex of the metasternum, which 

 I regard as typical Chitalia, and the other composed of 

 smaller species, with more truncate base of the head, shorter 

 and more incrassate antennae and without granules on the 

 pronotum, with sparsely punctate abdominal impressions, 

 and, more particularly, a gradually concave intermesocoxal 

 surface, with the mesosternal process rectilinearly truncate 

 and almost completely amalgamated with the metasternum, 

 the suture very fine. The former of these groups is purely 



