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Pyrgulina ceria (Laseron, 1951)

Description: Shell with spire nearly straight-sided, up to 5 teleoconch whorls, last whorl half of shell length. Protoconch infolded, type C. Whorls angled, sculptured with widely spaced axial folds with threads in the interspaces. Aperture length 1 times the width; columella with weak plait. Shell white, covered by thick brown periostracum which peels off with age.

Size: Up to 4.5 mm in length.

Distribution: The Australian Museum holds specimens from Port Stephens, NSW, southwards to Port Hacking, Sydney.

Habitat: Specimens are from beach washup and from dredgings down to 15 m. Most are from within estuaries. There are quite a few lots from sand flats at Cabbage Tree Basin, Port Hacking. Uncommon.

Fig. 1: Cabbage Tree Basin, Port Hacking, NSW (C.341526) Periostracum is peeling off.


Copyright Des Beechey 2017