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Cantharidella tiberiana Crosse, 1863 Description: Shell with height greater than width. Protoconch white or pink, smooth. Teleoconch whorls rounded and variously smooth or with narrow or broad spiral ribs; consistently one broad rib at periphery. Base rounded, sculptured as body whorl. Umbilicus closed; columella smooth. Outer lip thickened internally, smooth. Colour variable; background pink, fawn or olive green, white streaks descending from sutures, breaking into white spots on lower spiral ribs; peripheral rib regularly marked with white splashes; umbilicus and aperture white. Interior nacreous. Size: Up to 9 mm high, usually less than 5 mm. Distribution: Endemic to Australia; Ulladulla, NSW, to SA, including Tas. Habitat: Lives subtidally on seaweed. Mainly known from beach shells. Uncommon in NSW. Comparison: Cantharidella picturata is similar in shape and sculpture, but has an open umbilicus Figs. 1,2: Nortch coast, Tasmania (C.451581) |
