Gregariella barbata (Reeve, 1858) Length 11mm, Width 5mm Marine North, South and Chatham Islands. Also Western Australia to New South Wales KACM |
Musculus impactus (Hermann, 1782) Length 47mm, Width 28mm Nesting Mussel, Marine North, South, Stewart and Chatham Islands. In clumps under rocks below low tide ACFM |