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Eatoniella depressa Ponder & Yoo, 1977

Description: Shell minute, short-spired, last whorl relatively large. Spire outline convex. Protoconch of 1 whorls. Teleoconch about 1 convex whorls. No spiral or axial sculpture. Aperture oval, flared anteriorly; outer lip straight in profile, or with 2 well-defined sinuses in mature shells (Fig. 3); inner lip broad. Umbilicus closed or narrowly open. Shell colourless or yellowish transparent or translucent, becoming opaque with age.

Size: Up to 1.1 mm in length.

Distribution: Endemic to Australia; Batemans Bay, NSW, southwards and around southern Australia to south-western WA, including Tasmania.

Habitat: Usually on algae on exposed shores (Ponder &Yoo, 1977). Moderately common.

Comparison: The very low spire and relatively large last whorl distinguishes this species within the genus. See comparison of the genus under Eatoniella atropurpurea.

Figs. 1, 2, 3: Lorne, Victoria (C.420305)


Copyright Des Beechey 2012