Aulacomya maoriana (Iredale, 1915)
Length 60mm, Width 30mm
Ribbed Mussel, Marine, Native - Endemic
Three Kings Islands (shells), southern Bay of Plenty (small shells attached to beached algal holdfasts), south-eastern North Island, and South, Stewart, Snares, Auckland, Campbell, Antipodes, Bounty and Chatham Islands

Modiolus areolatus (A.A. Gould, 1850)
Length 115mm, Width 70mm
Marine, Native - Non-endemic
King Bank and Three Kings, North, South, Stewart, Snares, Auckland, Campbell, Antipodes, Bounty and Chatham Islands, from 0-485m

Modiolus auriculatus F. Krauss, 1848
Marine, Native - Non-endemic
SW Pacific, Lord Howe Island, Norfolk and Kermadec Islands, from 0m