Casey — Observations on the Staphylinidae. 189 



very broadly, evenly arcuato-truncate at tip in the unique type. Length 

 2.2 mm.; width 0.7 ram. Cuba (8ahia Honda), — H. F. Wickham. 



cnbana n. sp. 



The hind tarsi are missing in my only representative, but 

 they probably do not depart greatly from the prevailing 

 type in Meronera. 



IscHNOPODA Thoms. — The general facies in this genus is 

 almost wholly similar to that of Gnypeta, but the middle 

 coxae are very much more approximate and there are certain 

 other differences, notably in the tarsi and palpi, which ap- 

 parently indicate its validity. The diagnosis in the table was 

 taken from the species described by Erichson under the specific 

 name umbratica. 



Xenusa Key. — This is considered by the authorities of the 

 most recent European catalogue to be a subgenus of Myr- 

 mecopora Saulcy, but I have never studied that genus, and 

 therefore can form no opinion at present; Ilyusa, however, 

 seems to be slightly different from Xenusa. Xenusa is cer- 

 tainly an isolated type of the subtribe and the two examples 

 of uvida Er., before me, exhibit certain subspecific differ- 

 ences. One of them was collected in the south of France 

 and the other in the Island of Corsica, the latter being rather 

 less stout, with notably smaller head and prothorax and some- 

 what shorter antennae. These divergencies have been brought 

 about in the insular form by reason of isolation undoubtedly, 

 but the time through which this agency has been acting is of 

 course unknown. 



Amanota n. gen. — The type of this genus exhibits a re- 

 markable combination of structural features characterizing 

 other genera, but is, at the same time, an undoubtedly isolated 

 species. The abdomen and elytra are strongly remindful of 

 Tachyusa^ and, the prothorax, of the genera allied to Myr- 

 mecopora, but the open middle acetabula, very widely separated 

 coxae and long tarsi are characters quite unknown in those 

 genera. The single species may be readily identified from the 

 following description: — 



Form rather stout, dark piceous -brown in color, the head and posterior 

 parts of the abdomen blackish ; legs and antennae paler, castaneous, 



