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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 strong axial folds, on last whorl terminating level with top of aperture; spiral sculpture of 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 fucus but more slender with less convex whorls.

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

 

Copyright Des Beechey 2016