There were several of these running around in the mud.
About 1&1/2 inches long. Size of adult thumb. Biggest I've ever seen
approx. 8 mm. keys out okay to pterostichus (2 supraorbital punctures) but unlike the other two small pterostichus species i’ve encountered (strenuus and patruelis) due to the lack of bristles under the terminal tarsal segment. found in a rotting log near Beaver Lake, in Stanley Park, Vancouver, as part of a bioblitz.
Caught swimming out of some dead Carex.