Amastra uniplicata ssp. vetuscula Cooke

Maunaloa Amastra Snail (Amastra uniplicata ssp. vetuscula)

The Maunaloa Amastra Snail was described in 1917; it is known from (sub)fossil remains that were recovered from Late Pleistocene/Early Holocene deposits near the northern shore of Molokai’, Hawaiian Islands.

A very few imperfect specimens were found by Pilsbry and Cooke in 1913 at Moomomi where this variety is extremely rare. Further west, especially in the shifting sands, it occurs more abundantly but is not a common species in any locality. it has been found sparingly in all the known fossil deposits from Puukapele west to the shifting sands. This variety is readily separated from the typical form by its less tumid last whorl, more cylindrical form and malleate surface.” [1]

The shells reach sizes of about 1,8 to 2 cm in height.

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Photo from: ‘C. Montague Cooke: Some new species of Amastra. Bishop Museum Occasional Papers 3(3): 1-34. 1917’

(public domain)

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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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edited: 04.05.2022