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Pisinna varicifera relata (Cotton, 1944)

Description: Shell small, solid, spire tall, variable in outline from almost straight to moderately rounded. Protoconch of 1 - 1 whorls, sculptured with spiral rows of minute pits, with distinct junction with teleoconch. Teleoconch up to 4 whorls; whorls rounded with simple sutures (Fig. 1) or with suture turreted at top of whorl and grooved at bottom (Fig. 2). Whorls sculptured with fine, oblique axial ribs, usually stronger on last whorl. Aperture oval, outer lip with broad, low varix externally. Colour yellowish-brown of pinkish fading to fawn or white in dead shells.

Size: Up to 4.6 mm in length.

Distribution: Endemic to Australia: central NSW, southwards and around southern Australia to south-western WA, including Tasmania.

Habitat: On the continental shelf, 13-365 m (Ponder & Yoo, 1976). Common.

Comparison: See Comparison of Pisinna species

Synonymy: Eusetia laterna Cotton, 1952 is a previously recognised synonym.

Remarks: The nominate subspecies Pisinna varicifera varicifera (Tenison-Woods, 1877) is a fossil from Table Cape, Tasmania.

Fig.1: 5003-1 Off Sydney, 150 m (C.411029)

Fig. 2: 5005-1 5-8 miles off Port Kembla, NSW, 115-137 m (C.16313)


Copyright Des Beechey 2010. Modified 2014