Zethalia
Zethalia is a genus of sea snails in the subfamily Umboniinae of the family Trochidae, the top snails, first formally named in 1918.
Species
The genus contains one extant species and two extinct species:- †Zethalia coronata Marwick, 1948
- †Zethalia russelli Marwick, 1965
- ''Zethalia zelandica''