THE CANADIAN ENTOMOLOGIST. 129 



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. •• picicornis Kby. is Pterost. mutus Say. 



43. Stereocerus similis Kby. is Amara kaematopus (Dej.) 



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



mined by Kirby ; is Amara laticollis Lee. 



45. ■• rufimanus Kby. I f the hind angles of the thorax are 



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

 1873, p. 323), tins 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. " BREViLABRis Kby. Identical with the preceding species. 



47. •• latior Kby. is Amara (Bradytus). Described since 



Kirby as libera Lee, lacvisiriata Putz. and Oregon a 

 Lee. (See Trans. Am. Ent. Soc, 1875, P- I28 )- 



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. 

 ^2. " inaequalis Kby. is interstitialis Dej. 



53. " impuncticollis Say. 



54. " pallipes Kby. 



55. •• laevipennis Kby. is a smooth erratica Sturm. 



56. •• discors Kby. is chalcea Dej. 



57. Harpalus pleuriticus Kby. 



58. " basilaris Kby. is obesitlus Lee. 



59. " ochropus Kby. is desertus Lee. 



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



Anisodactylus nigrita Dej. 



61. " longior Kby. is longicollis Lee. 



