Amastra cornea

Amastra cornea was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae. ^[2]

Amastra cornea
Conservation status
Extinct  (IUCN 2.3)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Amastridae
Genus:	Amastra
Species:	†A. cornea
Binomial name
†Amastra cornea (Newcomb, 1854)
Location of Oʻahu
Synonyms
Achatinella cornea Newcomb, 1854 superseded combination Amastra (Metamastra) cornea (Newcomb, 1854) alternative representation

Description

(Original description) The shell is irregularly acutely conical with a pointed apex and an inflated body whorl. It is thin and corneous, adorned with minute longitudinal striations. Comprising seven rounded whorls, the shell features a subovate aperture with a thin, translucent lip. The columella is straight, white, and equipped with a transverse, plaited tooth.

The shell's coloration is a uniform dark horn, contrasting with the white columella and tooth. ^[3]

Distribution

This extinct species was endemic to Oʻahu, and was known from around Waialua.