The Montane Amastra Snail was described in 1906; it inhabited the forest floors at elevations above 1800 m on the slopes of Pu’u Kukui, a mountain on western Maui, Hawaiian Islands, it shared its habitat with another now extinct amastrid snail, Alexanders Laminella Snail (Laminella alexandri (Newcomb)).

There is also a little description of the animal itself.:

“Animal in motion as long as the shell. Mantle dark-brown with a light-brown border. Foot and tentacles almost black. Head above coarsely granulated.” [1]

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References:

[1] George W. Tryon; Henry A. Pilsbry; a. o.: Manual of Conchology. Second series: Pulmonata. Vol 21: Achatinellidae (Amastrinae). 1911

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Depiction from: ‘George W. Tryon; Henry A. Pilsbry; a. o.: Manual of Conchology. Second series: Pulmonata. Vol 21: Achatinellidae (Amastrinae). 1911’

(public domain)

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edited: 16.05.2022