Amastra (Cyclamastra) ultima Pilsbry & C. M. Cooke, 1914 alternative representation Amastra ultima is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.

(Original description) The shell resembles Amastra morticina in overall shape but differs by featuring a significantly larger umbilicus and a much weaker columellar lamella.

The body whorl is slightly compressed around the umbilicus, which contains a spiral sulcus positioned opposite the columellar lamella.

The aperture is relatively narrow and angular at both ends, with an interior coloration matching the exterior.

The outer lip is thin, and the columella is vertical, bearing a very low, oblique lamella that does not extend to the edge, adding a subtle refinement to the shell's structure.