250 Mr. H. W. Bates' supplement to the 



The pro-sternal process is margined at the apex, but 

 sometimes very faintly. It is distinctly margined in 

 many other species of the group, e. g., 0. fortis, 

 Eschscholtzi, &c. 



Pterostichus (Omaseus) ambigenus. 



0. nigritce haud dissimilis sed thorace fere ut in 

 Plati/sma vitrea postice magis quam antice angustato, 

 lateribus valde arcuatis, angulis posticis breviter pro- 

 minentibus acutis. Niger leviter ameo-tinctus ; capite 

 mox pone oculos prominentes angustato, foveis frontali- 

 bus tenuibus vix impressis ; thoracis fovea basali 

 utrinque lata et profunda, punctata, bistriata, carinulaque 

 lasvi juxta angulum ; elytris apice sat valde sinuatis, 

 punctulato-striatis, interstitiis modice convexis, tertio 

 punctis 3 vel 4. 



$ . Segmentum ultimum ventrale modice concavum, 

 antice tuberculum triangulari incumbente, clepressum, 

 apice tantum libro. Long. 11 mm., $ . 



Shimidzu-toge. One example in August. 



Platysma oblong o punctata, Fab. 



Fab. Syst. EL, i., 183. 



Nikko. Two examples, not differing from specimens 

 from Eastern Europe. 



Lagarus nimbatus, Morawitz. 

 Morawitz, Bull. Acad. St. Petersb. 1862, p. 235. 



Argutor ? microcephalus, Motschulsky, Etud. Ent., ix., 



1860, p. 6? 

 Lagarus microcephalus, Bates, Trans. Ent. Soc. Lond., 



1873, p. 285. 



Generally distributed throughout Japan. 



Chaudoir (Bull. Mosc, 1878, p. 60) has given valid 

 reasons for rejecting the name of A. microcephalus for 

 this species. There is not much in the specific description 

 above cited to forbid the supposition that it refers to the 

 species; but in a subsequent paper, in which Motschulsky 

 proposed and defined a genus for the reception of his A. 

 microcephalus, genus PJiagadus, Bull. Mosc, 1865, iv., 



