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Diaphana brazieri Angas, 1877

Description: Shell small or minute, lightweight, apex truncate. Spire flat, or slightly elevated, or depressed with projecting protoconch; top of whorls on spire rounded, deeply grooved between whorls; last whorl shouldered. Whorls smooth below shoulder apart from weak growth lines. Aperture broad, with wide canal anteriorly, outer lip thin. Columella smooth, slightly expanded over deep umbilicus. Shell colourless transparent to opaque white.

Size: Up to 4.5 mm in length.

Distribution: Australian Museum specimens are from off Tweed Heads, NSW, southwards to Bass Strait. Burn (2006) reported it from all Australian states and New Zealand.

Habitat: Australian Museum specimens are from 9 m in Sydney Harbour down to 1600 m off Tweed Heads.

Fig. 1: Off Sow and Pigs Reef, Port Jackson, NSW, in 7 m (C.64665 LECTOTYPE). (Photo Australian Museum).

Fig. 2: Spire detail. Off Sow and Pigs Reef, Port Jackson, NSW (C.008000).


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