the Cryobius group of Pterostichi, in which the 

 species are very difficult to separate. * 



40. Omaseus orinomum Knoch. is a Pterostichus. 



41. " NiGRiTA Curtis (Kby.) This species is erroneously deter-. 



mined by Kirby and does not appear to differ from 

 Pterostichus caudicalis Say, from specimens in 

 my cabinet from Hudson's Bay region. 



42. " PicicoRNTS Kby. is Pterost. mutus Say. 



43. Stereocenis similis Kby. is Amara haematopus (Dej.) 



44. Curtonotus convexiusculus Steph. (Kby.) Erroneously deter- 



mined by Kirby ; is amara laticollis Lee. 



45. ** rufimanus Kby. If the hind angles of the thorax are 



prominent, as stated by Dr. Leconte (Proc. Acad. 

 1S735 P- 323), this species is rather laticollis than 

 LACUSTRis, as there stated. The species of Amara 

 in this vicinity need a careful revision, when their 

 number will be considerably decreased. No actual 

 comparison of Kirby's and our own types have been 

 made, and any positive expression might mislead. 



46. " BREViLAHRis Kby. Identical with the preceding species. 



47. " LATiOR Kby. is Amara ( Bradytiis ). Described since 



Kirby as libera Lee, laevistriaUi Putz. and Oregona 

 Lee. (See Trans. Am. Ent. Soc, 1875, p. 128). 



48. Poecilus lucublandus Say is a Pterostichus. 



49. " castanipes Kby. is a variety of 48. 



50. " chalcites Say is Pterostichus Sayi Brulle. 



51. Amara VULGARIS Latr. (Kby.) is not that species, but erratica 



Sturm. 



52. " inaequalis Kby. is interstitialis Dej. 

 33. " impuncticoUis Say. 



54. " pallipes Kby. 



55. " i.AEViPENNis Kby. is a smooth erratica Sturm. 



56. " DiscoRS Kby. is chalcea Dej. 



57. Harpalus pleuriticus Kby. 



58. " basilaris Kby. is obesulus Lee. 



59. " OCHROPUS Kby. is rt'.fjY-r/ttJ- Lee. 



60. '' interpunctatus Kby. is probably merely a variety of 



Anisodactylus nigrita Dej. 



61. " LONGiOR Kby. is longicollis Lee. 



