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ORBITESTELLIDAE


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Obitestella wareni Ponder, 1990

Description: Shell minute, spire sunken. Protoconch of about 1 whorls with raised spiral ridge on dorsal surface. Dorsal surface of teleoconch whorls convex, with flattening on outer edge beside a weak upper peripheral cord. Lower peripheral cord weak or absent. Base convex with widely open umbilicus. Whole shell surface with widely but irregularly spaced oblique axial folds, continuing from dorsal surface across periphery to base. Shell transparent, colourless or fawn, becoming opaque white with age.

Size: Up to 0.8 mm in diameter.

Distribution: Known from Port Stephens, NSW, southwards to Jervis Bay, NSW.

Habitat: Specimens are from rock and algal washings from the intertidal zone. Uncommon.

Comparison: See O. bastowi.

Figs. 13: Shelly Beach, Manly, NSW (C.159086, PARATYPE).

 

Copyright Des Beechey 2016