Eatoniella notalabia is a species of marine gastropod mollusc in the family Eatoniellidae.

Eatoniella notalabia has a minute ovate-conical shell, with a swollen body whorl.

Colour of the species' shells can vary from yellow-brown, purplish-brown to black.

[2] Specimens collected from Piha in the 1960s were uniformly white, with no black.

[1] The holotype was collected by Ponder himself on 1 January 1964, at Goat Island Bay (modern-day Cape Rodney-Okakari Point Marine Reserve) in the Auckland Region.