m 



The following- are unknown, or not identified : 

 Feronia maculifrons, Say. Jouru Ac. Pliil. III. 146. 

 Anchomenus exaratus, Mann. Bull. Mosc. 1853. III. 141. 

 Limodromus interstitialis, Motsch. Bull. Mosc. 11. 31b. 



aeuticoflis, " " " 1864,11,319. 



Europhilns iridipennis, " " " " II, 321. 



Anchomenus rugiceps, Mann. Probably an individual varia- 

 tioTi of P. brunneoinarginatus. 



Species common to both continents. 

 P. blcolor, No. 23. 

 P. iinpremis, {Panzer)', tide Munich Oat. 372. Sitka. Compare P. 



perforatus, Lee. No. 60. 

 P. parumpunctatus, (Fab.); fide Munich Cat. 374 :=Agonothorax 



planipennis Motsch. Sitka. 



P. Bogemartni (Dej.) This species is said to occur in Alaska: 

 A Swedish specimen examined seems to differ from P. obsoMvs, 

 only by the prothorax being a little less transverse with the hind 

 angles less completely rounded. I have omitted the name from 

 the synoptic table as I do not. feel satisfied with the comparisons 1 

 have made. 



DESCRIPTION OF NEW SPECIES. 



24. Platynus piceolus. Of the same form and size as P. bicoldr, 

 shining dark piceous, with a slight metallic lustre. Antenna fus- 

 cous, 1st joint, base of palpi, legs and epipleurae piceo-testaceous. 

 Prothorax a little wider than the head with the eyes, scarcely wider 

 than long, narrower at base than at apex, sides rounded in front, 

 oblique behind, strongly margined, front angles slightly acute, 

 hind angles obtuse and somewhat rounded : anterior impression 

 deep, dorsal line fine,not abbreviated, basal impressions deep. 

 Elytra oblong-oval, wider than the prothorax, humeri rounded, 

 base emarginate, apex obliquely truncal e and but feebly sinuate ; 

 striae fine but well marked, interspaces nearly flat, 3rd with from 

 4-5 punctures. Length 7 mm. 



Oregon and British Columbia : three specimens. Differs from 

 P. bicolor by darker color, by the the sides of the prothorax being 

 more widely margined and strongly reflexed, and less sinuate 

 near the base. 



27. P. erasus. Of the same form and size as the preceding- but 

 entirely black shining. Prothorax not wider than the head with 

 the eyes, hardly as wide as long, narrower at base than apex, 

 sides rounded in front, oblique behind ; margin narrower, slight- 

 ly reflexed near the base : front angles rounded, hind angles ob- 

 tuse, but scarcely rounded at tip : anterior transverse impression 

 deep, dorsal line deep, abbreviated in front, basal impressions 

 moderate. Elytra wider than the prothorax, elongate-oval, base 

 emarginate, humeri rounded, apex not sinuate but rounded, sutu- 



