Clara’s Hirasiella Snail was described in 1902; it is, or maybe was, endemic to the island of Chichijima in the Ogasawara Islands, Japan.

The shells reach sizes of about 0,3 cm in height; “Shell sub-perforate, glossy and smooth, yellowish, elevated with convex outlines, bullet-shaped, the periphery rounded, base very convex.” [1]

The species is now possibly extinct. [2]

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References:

[1] H. A. Pilsbry: Notices of new land shells of the Japanese Empire. Nautilus 15: 141-142. 1902
[2] Robert H. Cowie; Claire Régnier; Benoît Fontaine; Philippe Bouchet. Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41. 2017

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Depiction from: ‘Henry August Pilsbry: Papers on Mollusca of Japan. Philadelphia 1901-12’

(not in copyright)

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edited: 17.05.2022