Casey — Observations on the Staphylinidae. 285 



scattered and irregular setigerous punctures, not at all impressed before 

 the scutellum; elytra only very slightly wider than the prothorax but 

 nearly one-half longer, parallel and straight at the sides, the humeri 

 scarcely exposed, the punctures fine, asperulate and sparse; abdomen 

 more finely and much more strongly reticulate throughout, impunctate, 

 parallel, feebly narrowed near the apex, about as wide as the elytra. 

 Male having a short broad and rounded sublamellate process at the 

 middle of the apical margin of the first tergite, the fourth tergite with 

 a long erect and acutely pointed, very conspicuous spiniform process on 

 the disk before the apex at each side at about one-eighth the width from 

 the margin, the fifth plate with a broad subelevated fiat apical edge, ex- 

 tending obliquely forward near each side, the sixth very acutely pro- 

 duced at the middle posteriorly, the lobe somewhat reflexed. Length 

 1.2-1.36 mm.; width 0.6-0.65 mm. Cuba (Cayamas), — C. F. Baker. 



cornnta n. sp. 



Corruscula is a rather common species but the males are 

 very rare, there being only one among the sixteen specimens 

 at hand; the contrary rule prevails, however, through the re- 

 mainder of the genus, where the males greatly outnumber the 

 females. Cornuta is a very remarkable species, having dorsal 

 sexual marks on the tergum even more conspicuous than in 

 corruscula, but these characters are very variable, one male 

 before me having the long spines of the fourth plate reduced 

 to small and very slender proportions ; the broader thickened 

 margin of the fifth tergite is scarcely at all developed in this 

 example. Azteca is allied to ohlita Shp., but apparently has 

 the prothorax more nearly equal in width to the elytra and 

 differs also in the paler basal parts of the abdomen and the 

 closer elytral punctures. The genus Eumicrota will include 

 in addition the South American Gyrophaena pumila and 

 parvula, of Sharp. 



Phanerota n. gen. 



The species of this genus are few in number but include 

 some of the largest of the subtribe and appear to be peculiar 

 to the North and South American continents. They may be 

 known at once from Gyrophaena by the very large and 

 coarsely faceted eyes, which occupy the entire sides of the head 

 as in Stemis, but otherwise, and especially in coloration, in the 

 diaphanous integuments and general facies, they greatly re- 

 semble that genus, with which they have been heretofore 



