Relichna aupouria (Powell, 1937)
Height 5.5mm, Width 2.5mm
Marine, Native - Endemic
Middlesex Bank, Three Kings Islands, and northern Northland, from 120-440m

Relichna murdochi (Suter, 1913)
Height 4.4mm, Width 2.2mm
Marine, Native - Endemic
Northern and south-western North Island, and western South Island, from 55-872m

Relichna pachys (R.B. Watson, 1883)
Height 5.8mm, Width 3.5mm
Marine, Native - Non-endemic
South-western Pacific. Eastern North Island, eastern South Island and Chatham Rise, from 293-1000m

Retusa opima (Finlay, 1926)
Height 3.3mm, Width 1.8mm
Marine, Native - Endemic
The Aldermen Islands, Lyall Bay, Fiordland, and Stewart Island, from 0-64m

Retusa oruaensis (Webster, 1908)
Height 4mm, Width 2mm
Marine, Native - Endemic
Middlesex Bank, Three Kings Islands, and North, South and Chatham Islands, from 0-660m

Retusa striata (Hutton, 1873)
Height 3mm, Width 2.5mm
Marine, Native - Endemic
Three Kings Islands, northern and southern North Island (Spirits Bay and Wellington), southern South Island, and Stewart, Snares, Auckland, Campbell, Antipodes, Bounty and Chatham Islands, from 0-549m