Geodephagous Coleoptera of Japan. 265 



Perigona discipennis. 



Depressa, testaceo-rufa, capite (epistoniate partibusque 

 oris exceptis) maculaque oblonga posteriori elytrorum, 

 nigris, interstitiis 1 et 2 niargineque laterali et apicali 

 runs ; thorace transverso, quadrato, antice modice rotun- 

 dato, postice angustato, angulis posticis obtusis ; elytris 

 striatis, interstitiis convexis. Long. 3£ mm. 



Nagasaki, Konose, and Yuyama, under bark of fir. 



The black or blackish discoidal streak of the elytra 

 commences at about one-third the distance from the 

 base in a nearly straight frontal edge, and extends to the 

 apex and sides, not, however, including the extreme 

 apical or lateral margins ; inwards it reaches the 2nd 

 stria from the suture. The general form is oblong, 

 rather narrow, and straight-sided ; the thorax flat. 



Perigona sinuata. 



Angustior, oblonga, minus depressa. Testaceo-rufa, 

 capite supra et elytris fusco-nigris, his marginibus et 

 linea suturali prope basin et apicem angusta sed post- 

 medium dilatata et interstitia 1 — 3 tegenti, rufis ; thorace 

 minus transverso, quadrato, postice longius et plus 

 minusve sinuatim angustato, angulis posticis fere rectis, 

 dorso convexiusculo, basi depresso ; elytris substriatis, 

 interstitiis prope suturam convexis. Long. 3 — 3| mm. 



Miyanoshita ; Oyama. Under bark. 



Perigona tachyoides. 



Magis ovata et convexa ; fusca, capite thoraceque 

 nigris vel castaneis, elytris testaceo-flavis macula com- 

 muni anteriori (a basi et lateribus distanti) fasciaque sub- 

 apicali fuscis ; antennis partibus oris pedibusque tes- 

 taceis ; thorace valde transverso, postice sat angustato, 

 angulis posticis obtusis sed distinctis, dorso parum 

 convexo ; elytris prope suturam substriatis et interstitiis 

 convexis sed versus latera laevissiniis. Long. 3^ mm. 



Nagasaki, Kobe, and Kashiwagi. 



Similar in colour and markings to P. Becearii, Putz., 

 from Borneo. 



