the Staphylinidge of Japan. 461 



This is allied to the European M.inclinans^ and belongs to 

 the subgenus Bryocharis of Thomson and Key. 



Nara, 1st July, Chiuzenji, 19th August, 1881 ; one ex- 

 ample from each, both apparently females. 



Megacronus princeps. 

 Meg acr onus prince}) s, Sharp, Trans. Ent. Soc. Lond. 1874, p. 19. 



Mr. Lewis has now found the male of this species ; it 

 possesses on the penultimate plate two series of cilia separated 

 by a moderately broad space ; the cilia are so arranged and 

 so densely packed as to appear like a solid carina. The 

 species belongs to the subgenus Bryocharis. 



Hitoyoshi and Miyanoshita; a single example in May 

 from each locality. 



Megacronus setiger. 



Megacronus setiger, Sharp, Trans. Ent. Soc. Lond. 1874, p. 18. 



The characters previously given by me as those of the 

 male are, I presume, really those of the female, as Mr. 

 Lewis has brought back two examples, one of which, by- 

 extraction of the oedeagus, I find to be certainly a male ; it 

 has the terminal ventral plate provided in the middle behind 

 with a large broad depression, and terminated behind by a 

 large, peculiar, ligular prolongation. 



Ichiuchi and Kiga ; one example from each place. 



Megacronus striatus. 

 Staphylinus striatus, Oliv. Ent. no. 42, pi. v. fig. 47. 



In Europe this species has not been found to be variable ; 

 but in Japan, to judge from the few examples obtained by 

 Mr. Lewis, it is quite the contrary. The eight Japanese 

 examples represent four forms, viz. : — 1, similar to our Euro- 

 pean type ; 2, similar to the European type, but with more 

 densely punctured hind body ; 3, rather smaller and more 

 slender than the European type, and with the elytra entirely 

 black ; 4, considerably smaller than the European type, and 

 thorax and elytra red, the latter with a black spot behind. 

 It is far from improbable that these may prove to be four 

 distinct species. 



1. Nikko; 2. Oyama and Nikko ; 3. Nikko ; 4. Nikko 

 and Sapporo. 



