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Turbonilla hedleyi (Laseron, 1951)

Description: Shell medium size, very elongate and slender, up to 10 whorls. Protoconch coiled (Type B), of about 2 whorls, set on teleoconch with axis inclined at about 110 to teleoconch axis. Teleoconch whorls weakly convex, sculptured with about 20 strong axial folds, on last whorl terminating level with top of aperture; spiral sculpture of numerous weak threads. Aperture teardrop-shaped, columella without plaits. Shell translucent, colourless to mid brown, sometimes with a pale brown band around middle of whorls, becoming opaque with age.

Size: Up to 7 mm in length.

Distribution: Endemic to Australia: Port Stephens, NSW, southwards to Twofold Bay, NSW.

Habitat: Known from beach washup and subtidally down to 53 m. Moderately common.

Comparison: Similar to Turbonilla fusca but more slender with less convex whorls.

Fig. 1: Twofold Bay, NSW (C.340965); Dried animal inside shell.


Copyright Des Beechey 2016