Ethaliopsis Cossmann, 1918 (invalid, preoccupied by Ethaliopsis Schepmann, 1908) Zethalia is a genus of sea snails in the subfamily Umboniinae of the family Trochidae, the top snails, first formally named in 1918.

[1][2] There is one extant (still living) species and two extinct species within the genus Zethalia:[1]

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