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4788-1.jpg (79404 bytes)


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Seguenzia sp.

Description: Shell higher than wide, spire outline almost straight, aperture elaborately flared. Protoconch smooth, with well-defined junction to teleoconch. Teleoconch up to 6 whorls. Spire whorls with strong keel in middle and another at bottom, concave above and below middle keel. Axial sculpture of crisp curved ribs, sinuous on top half of whorls and directed forward on bottom half. Very fine spirals threads between axial ribs. Base with about 4 spiral cords and fine radial threads. Umbilicus open, narrow. Aperture elaborately flared with deep sinus below suture (Fig. 2); inner lip thickened, reflected to partly close umbilicus, with a projection centrally (Fig. 1). Colour translucent white or opaque fawn.

Size: Up to 4.1 mm high, 3.0 mm wide.

Distribution: Specimens available from off Cairns, Queensland, southwards to Ulladulla, NSW

Habitat: From 750-1470 m depth; 8 lots held by the Australian Museum.

Remarks: This appears to be an unnamed species.

Figs. 1,2,3: 4788-4790 East of Broken Bay, NSW, in 822-877 m (C.310353)


Copyright Des Beechey 2009