Amastra albolabris was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae.
(Original description) The shell is conically ovate with an acute apex and six rounded, non-margined whorls. The aperture is ovate, and the columella is short with plicate teeth. The semilunar lip is thickened and white.
The shell is dark umber in color, highlighted by a yellow sutural line, with the interior a striking bluish-white[1]
This species was endemic to Oʻahu, and was known from the Waiʻanae Range.