Amastra soror is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Subspecies Amastra soror interjecta Hyatt & Pilsbry, 1911 Amastra soror laticeps Hyatt & Pilsbry, 1911 Amastra soror soror (Newcomb, 1854)
Description The length of the shell attains 11.6 mm.
(Original description) The shell is sinistral and conically turreted, comprising seven rounded whorls with a deeply impressed suture. The aperture is small and subovate, with a simple outer lip. The columella is very short, ending in a twisted plicate tooth.
The thin epidermis is dark corneous on the upper portion and light corneous below.
Distribution This species is endemic to Hawaii and occurs on Maui Island.
References
External links Conchology.be: image