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Microvoluta australis Angas, 1877 Description: Shell with spire straight sided or slightly convex, whorls rounded, aperture half total shell length. Spiral sculpture absent, or a few fine grooves below the suture, rarely thickening to one stronger groove, or fine spiral grooves over the whole surface. Axial sculpture absent. Columella with four strong plaits, the upper 2 or 3 of the same size, those below weaker. Outer lip simple, convex, sinuous in profile, not lirate internally. Colour uniformly fawn to dark brown, or fawn with irregular axial zigzag brown lines, these often thickening to brown patches in the middle of the whorls. Size: Up to 11 mm in length. Distribution: Endemic to Australia; Cape Moreton, Queensland, to southern Tasmania. Habitat: Known from 10-212 metres. Common. Synonyms: Voluta minima Sowerby, 1877; Microvoluta purpureostoma Hedley & May, 1908 Figs. 1,2: Off Twofold Bay, NSW (C.369228, both specimens) |
