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Tiberia bifasciata (Tenison-Woods, 1876)

Description: Shell large, wide, spire straight-sided or slightly convex, up to 9 whorls, last whorl almost of total shell length. Protoconch (type B) coiled, of about 2 whorls, set on teleoconch with axis inclined at 140 to teleoconch. Teleoconch whorls straight-sided or weakly rounded, suture well defined, whorls smooth, without sculpture. Aperture wide, columella with one moderately strong plait; inner lip reflected outwards below plait. Shell white, usually with 1 or 2 brown bands developing around middle of whorls from 4th whorl; 3 bands on last whorl.

Size: Up to 8 mm in length.

Distribution: Yamba, NSW, southwards and around southern Australia to central SA, including Tas.

Habitat: Empty shells are known from beach washup and down to 66 m. Common.

Remarks: Vafiadis (2007, Fig. 2e) described the external features of the animal and figured the  head-foot.

Fig.1: Cronulla, Sydney, NSW (C.340902).


Copyright Des Beechey 2016