Barythaerus biconvexus (Powell, 1927) Width 2.9mm, Height 2mm Marine, Native - Endemic Southern South Island and Stewart Island. From approx. 20-180 metres F |
Barythaerus cuneatus (Powell, 1937) Width 5.5mm, Height 3.7mm Marine, Native - Endemic Middlesex and King Banks, Three Kings Islands and off Cape Reinga. From approx. 50-800 metres A |