Biplex australasia Perry, 1811 Mayena australasia australasia (Perry, 1811) Mayena australasia benthicola Iredale, 1929 Mayena australasia blacki Powell, 1954 Mayena australasia vossi Powell, 1952 Mayena euclia Cotton, 1945 Mayena kurtzei Cotton, 1957 Mayena zelandica Finlay, 1926 Ranella leucostoma Lamarck, 1822 Ranella australasia is a species of large predatory sea snail, a marine gastropod mollusk in the family Ranellidae, the triton snails, triton shells or tritons.

[1] THis species is endemic to Australia and occurs off New South Wales, South Australia, Tasmania, Victoria and Western Australia

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