Amphithalamus erosus (Odhner, 1924) Height 1.5mm, Width 0.8mm Marine, Endemic Off Three Kings Islands and Northland AE. |
Amphithalamus falsestea (Ponder, 1968) Width 10.6mm, Height 2.15mm Marine, Endemic North Island. Under stones near low tide ACE. |
Amphithalamus incidatus maoria (Ponder, 1968) Height 1.56mm, Width 0.91mm Marine, Endemic North Island ACE. |
Amphithalamus latisulcus (Ponder, 1968) Height 1.34mm, Width 0.76mm Marine, Endemic Northland to Banks Peninsula. On soft coralline, rock pools at low tide ACE. |
Amphithalamus semen (Odhner, 1924) Height 1.5mm, Width 1.7mm Marine, Endemic Northland to Banks Peninsula, on coralline algae ACME. |