Amastra seminigra


Amastra seminigra is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.

Description

The length of the shell attains 21.2 mm, its diameter 10.3 mm.
The shell contains 6½ whorls. The apical whorls are fleshy or purplish in color, transitioning to a light yellow hue on the last two whorls. These are partially or predominantly covered with a pitch-black cuticle, which may appear in scattered shreds or remain nearly intact, except near the aperture.
The interior of the shell is either white or faintly tinged with pink, adding a subtle contrast to its exterior.

Distribution

This species is endemic to Hawaii, occurring on Oahu Island.