Tawera marionae Finlay, 1928 Width 33mm, Height 28mm Marine, Endemic Off Otago and Chatham Islands FME. |
Tawera phenax (Finlay, 1930) Width 58mm, Height 52mm Marine, Endemic South Island, off Taiaroa Head, Otago. Snares and Auckland Islands. Dredged around 90-100 metres FAnE. |
Tawera rosa Powell, 1955 Width 48mm, Height 42mm Marine, Endemic, Finer sculpture than T. sphaericula, and less inflated Auckland Islands AnE. |
Tawera sphaericula (Deshayes, 1853) Width 36mm, Height 35mm Marine, Endemic, Coarse concentric ridges. Bluntly rounded beaks, very thick and solid Auckland Islands, dredged 15-65 metres AnE. |
Tawera spissa (Deshayes, 1835) Width 34mm, Height 27mm Marine, Common on sandy beaches. Highly variable patterns, usually zigzags or streaks North, South, Stewart and Chatham Islands ACFM |