Geodephagous Coleoptera of Japan. 245 



Pterostichus ma crogenys . 



Elongatus, parallelopipedus, parum convexus, niger, 

 palpis pedibusque castaneo-rufis, capite magno, genis 

 tumidis post oculos ruaxhne prolongatis, oculis parvis ; 

 mandibulis valde elongatis ; thorace cordato-quadrato, 

 angulis anticis productis et acutissimis, postice longe 

 sinuatim sed paruni angustato, angulis posticis acutis, 

 fovea utrinque basali magna et profunda, sublsevi, 

 margine basali medio profunde sinuato versus angu- 

 lum rotundato ; elytris apice vix sinuatis humeris 

 baud productis, punctulato-striatis, interstitiis parum 

 convexis tertio bi- vel tri-punctato ; corpore subtus laevi. 



$ . Segmentum ultimum ventrale fovea magna et 

 profundo medio longitudinaliter vix elevata, margine 

 apicale reflexo medio indentato. Long. 23 mm., $ , ? . 



Niohozan ; one male and one female under a stone in 

 the deep forest, June, 1880. 



Pterostichus pachinus. 



Elongatus, modice convexus, niger palpis pedibusque 

 castaneo-rufis ; capite subcrasso, ovato, genis parum 

 tumidis, post oculos (sat convexos) paullo elongatis ; 

 thorace cordato, prope basin valde angustato et sinuato, 

 angulis posticis rectis subacutis, anticis vix productis, 

 fovea basali utrinque angusta, lineari ; elytris apice 

 oblique sinuatis, exarato-punctulato-striatis, interstitio 

 tertio quadripunctato. 



t? . Segmentum ultimum ventrale apice latum haud 

 profunde foveatum, fovea medio paullo elevata, margine 

 apicale haud reflexo. Long. 20 mm. 



Junsai. 



Allied to P. sphoclriformii, Bates ; but broader and 

 more robust in all its parts, and further distinguished by 

 the different form of the apical ventral segment in the 

 male. 



Pterostichus asi/nnuctricus. 



P. truncato (Dej.) subsimilis, sed magis robustus et 

 genis post oculos elongatis et tumidis. Elongatus, niger, 

 palpis et tarsis castaneo-rufis ; capite subtriangulare, 

 post oculos (parum convexos) tumido et dilatato, juxta 

 collum subito constricto ; thorace cordato, paullo post 



