The Glorious Amastra Snail was described in 1917; it was endemic to the island of Maui, Hawaiian Islands.
The shell of the holotype has a size of 1,45 cm in height; “In its dead state the last two whorls are white, becoming darker above, the apical whorls being of a dark reddish-brown. In two specimens there are traces of a thin dark greenish-brown epidermis.” [1]
The species was apparently already extinct when it was described, as only empty shells were found.
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References:
[1] C. Montague Cooke: Some new species of Amastra. Bishop Museum Occasional Papers 3(3): 1-34. 1917
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Depiction from: ‘C. Montague Cooke: Some new species of Amastra. Bishop Museum Occasional Papers 3(3): 1-34. 1917’
(public domain)
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edited: 16.05.2022