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The Collaborative International Dictionary
Ellobium aurismidae

Midas's ear \Mi"das's ear"\ [See Midas.] (Zo["o]l.) A pulmonate mollusk ( Auricula aurismid[ae] or Ellobium aurismid[ae]); -- so called from resemblance to a human ear.

Wikipedia
Ellobium aurismidae

Ellobium aurismidae, common name Midas's Ear Shell, is a species of medium-sized, air-breathing, saltmarsh snails, terrestrial pulmonate gastropod mollusks in the family Ellobiidae.