... since my last misidentified terrestrial mollusc.
Another snail misidentified as Garlic Snail based on my understanding of how rapidly expanding whorls look. Still not sure I understood why my answer was wrong on that one, but it is what it is. I can see that the umbilicus was big though, which may have been enough of a clue.
Prior to that I think I almost made it to 5 in a row correctly identified. We live in hope.