N.comptoni and N.dissecta from Meringo. They have much the same shape, different banding and different side spotting. The spire on the dissecta is noticably more sunken.
The large shell in the last photo, a comptoni, is from Laura Kahler's collection and is from Mystery Bay.
Fresh dead collected in a crevice underneath a rock in 0.5-2m, 2023
I have seen lots of tracks on palm trees but I finally found a slug after it rained.