@article {6227, title = {The North American Pterostichus of the Subgenus Cylindrocharis Casey (Coleoptera, Carabidae)}, journal = {American Museum Novitates}, year = {1971}, note = {Illustrations}, month = {January 25}, pages = {1-14}, keywords = {Beetles, Fauna -- Classification and description, Insects}, url = {http://digitallibrary.amnh.org/dspace/handle/2246/2654}, author = {Barr, Thomas C} }