Stiracolpus ahiparanus (Powell, 1927) Height 36mm, Width 8mm Marine, Endemic Ahipara and Auckland west coast, North Island. Below low tide to 60 metres ACE. |
Stiracolpus pagoda (Reeve, 1849) Height 41mm, Width 9mm Marine, Endemic Three Kings Islands, North, South and Chatham Islands ACFME. |
Stiracolpus symmetricus (Hutton, 1873) Height 23mm, Width 7mm Marine, Endemic, Always white Otago, Foveaux Strait and Stewart Island FE. |