Found this little guy outside, I'm keeping him for a while because of the frost. Note the dark body color, and the profile shape of the shell lead me to doubt it's a Hesperian of any sort
Found under foliage largely consisting of fallen big leaf maple leaves. It was initially found in a rounder form with no optical tentacles but later they emerged. The colors are a metallic silver and black. Area was nearby a stream, dirt was very muddy during this time due to the rain.
Size is a little less than an inch...