If I had to guess, I'd say those are Northern Crayfish, but without holding one in the hand and examining, it's next to impossible to say.
I don't know Weissguy. "Northern Crayfish" is pretty general isn't it? According to one source 350 of the worlds's 500 species live in the United States. I wonder how many species live in the northern U.S. or is there really a species called "Northern Crayfish?"
