17- Helobia [Nebria]*CASTANiPES Kby. An immature form of N. 



Sahlbergi Fisch., described anteriorly to Kirby, 

 from Alaska. 



1 8. Chlaenius sericeus Forst, 



19. " iMPiN'CTiFRONS Kby. is PENSYLVANicus Say 



20. " nemoralis Say. 



21. " QUADRicoLLis Kby. is TRICOLOR Dej. var. 



22. " (jORDicoLLis Ki)y. This species, anteriorly to Dr. Le- 



contes visit to the British Museum (1869), was 

 erroneously considered to be chlorophanus Dej. 



23. •* EMARGiNATUS (Kby.) The type of this species could 



not be found in the British Museum. It is not 

 identical with Sa/s species, and as the name is pre- 

 occupied, it would be better to drop it entirely from 

 our lists. 



24. Platynus angusticollis (Kby.) is not the European species of that 



name, but our commoR sinuatus Dej. 



25. Agonum extensicolie Say is a Platynus. 



26. " piciPENNE Kby. is prolvibly the species subsequently 



described as Platynus lutulentus Lee. The varie- 

 ties E and D are distinct and are Plat, ruficornis 

 Lee. 



27. *' soRDENS Kby. Flas been named in some collections 



f usees cens Chaud. 



28. " meianarium Dej. is a Platynus. 



29. " SEMiNiTiDUM Kby. Probably the same as Platynus 



chaleeus Lee. 



30. ■*' SIMILE Kby. In doubt. 



31. '• AFFiNE Kby. is Platynus Harrisii Lee. 



32. " ERYTHROPUM Kby. The n.Tme is pre-occupicd and Plat. 



SUBCORDATUS Lcc. must be used. 



33. '* cupripenne Say is a Platynus. 



34. Calathus grcgarius Say. 



35. Platyderus xitidus Kby. is Pterost. erythropus (Dej.) 



36. Argutor bicolcr Kby. is Pterost. patruelis Dej. 



37. " FEMORALiS Kby. is a Pterostichus. 



38. " MANLiBULARif Kby. is a Pterostichus. 



39. " BREv::CORNis Kby. Probably the same as fastidiosus 



Mann. This and the preceding species belong to 



