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Dentalium grahami Lamprell & Healy, 1998

Description: Shape shell well curved, more so towards apex. Weight solid. Aperture diameter up to 4.8 mm. Apex diameter 1.2 mm. Sculpture at the apex of 1718, narrow, rounded ribs which become obsolete at about half to two-thirds of shell length; interstices flat, approximately twice the width of the ribs. Transverse sculpture ribs and interstices crossed by dense, transverse striae and growth lines. Aperture circular. Colour pale olive-green.

Size: Up to 73 mm in length.

Distribution: Global distribution unknown. Assumed to be endemic to Australia with a distribution from Keppel Bay, Qld, southwards to Yamba, NSW.

Habitat: Trawled in sandy mud from 2880 m depth (Lamprell & Healy, 1998). Uncommon.

Comparison: This species is distinguished by its relatively large size, numerous longitudinal ribs and olive-green colour.

Fig. 1: Off Wooli, NSW, in 73 m (C.304985).


Copyright Des Beechey 2020