Volcano Galapagos Snail (Naesiotus trogonius)

This species was described in 1917, it is endemic to Isla Isabela in the Galápagos archipelago, where it is thought to have inhabited the forests on the slopes of the volcano Ecuador.

The species was not found alive since the 1800s and is definitely extinct.

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syn. Bulimulus trogonius Dall

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References: 

[1] William Healey Dall; Washington Henry Ochsner: Landshells of the Galapagos Islands. Proceedings of the California Academy of Sciences. Ser. 4. Vol. 17.: 141-185. 1928  

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edited: 01.06.2021