Bewsher’s Plegma Snail (Dancea bewsheriana)
This species was described in 1875.
The species was endemic to the island of Rodrigues, Mascarene Islands, and is apparently known exclusively from subfossil specimens. [1]
Bewsher’s Plegma Snail was a quite large species, the shells reached sizes of over 3 cm in diameter.
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References:
[1] Vincent Florens: Mollusques terrestres récoltés dans les grottes de Rodrigues. Bulletin Phaethon 3: 42-43. 1996
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(public domain)
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edited: 31.10.2017