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Oceanida tumerae (Laseron, 1955)

Description: Shell relatively small, long and slender, axis of first few whorls inclined to that of  rest of shell. Whorls weakly convex, suture well defined. Scars from position of outer lip 2 per whorl, aligned from whorl to whorl, often missing on individual whorls. Aperture long and narrow, more than one-quarter of shell length; outer lip strongly convex in profile, meeting suture at 45 degrees. Shell colourless transparent or white translucent.

Size: Up to 4.2 mm in length.

Distribution: Endemic to Australia. Known from Port Stephens, NSW, southwards to Sydney.

Habitat: All available specimens are from beach washup or dredgings down to 15 m. Host unknown. Uncommon.

Comparison: This is wider and shorted than Eulima spp. but not as wide as Melanella spp. with a protoconch of medium size for the genus.

Fig. 1: Port Stephens, NSW (C.103031 SYNTYPE)


Copyright Des Beechey 2015