So when I spotted one of these while removing some frost damaged vegetation it got a quick crushing. For some reason I knew this was a decollate snail. It is the only snail name I know and I really know nothing about it. All I was thinking was BIG SNAIL. Moving around I came across a small pile of about 8 oak leaves. Since there is no oak tree around I found the pile rather puzzling. Ye gads, underneath were 5 of these snails! Crushed. Now I started to poke around in earnest and found several more. I'm being taken over, I thought. I picked up one to photograph and then went inside and put in 'decollate snail' on google. I was right, Rumina decollata.
What have I done! This is a good snail. He goes around eating all the other snails and slugs. He's a gardener's friend. You can buy him on the internet. Does he eat seedlings too, I wonder?When I find more shall I let them be?
I put back the one I had photographed right next to a big fat slug hiding under the edge of a stone. I hope Rumina had him for supper.