Acar plicata (Deshayes, 1817)
Marine, Native - Non-endemic
Kermadec Islands, from 0-219m

Acar sandersonae Powell, 1933
Length 30mm, Height 17mm
Marine, Native - Endemic, Under stones from low tide
Three Kings Islands, north-western, eastern and south-western North Island, Chatham Islands and Mernoo Bank, from 0-604m

Acar sociella (Brookes, 1926)
Length 5mm, Height 2.5mm
Marine, Native - Endemic
Three Kings Islands, northern North Island as far south as New Plymouth on the west coast and Mahia Peninsula on the east coast, from 0-710m

Anadara trapezia (Deshayes, 1839)
Length 100mm, Height 66mm
Marine, Recent, Subfossil, Fossil
Far North. Spirits Bay. Kohukohu, Hokianga Harbour, and Auckland as subfossil. Also Western Australia to Queensland and Tasmania, Australia, subfossil to recent

Barbatia novaezealandiae (E.A. Smith, 1915)
Length 78mm, Height 42mm
Ark Shell, Marine, Native - Endemic
Middlesex and King Banks, Three Kings Islands, North Island, far northern and southern South Island, Stewart, Snares and Chatham Islands. Under stones from low tide, from 0-508m

Barbatia trapezina (Lamarck, 1819)
Marine, Native - Non-endemic
Kermadec Islands, from 0-15m

Bathyarca corpulenta (E.A. Smith, 1885)
Height 28.8mm, Width 24.0mm
Marine, Native - Non-endemic
Kermadec Trench. Atlantic, Pacific and Antarctic Oceans, from 4410m

Bathyarca cybaea Hedley, 1906
Length 4mm, Height 3mm
Marine, Native - Endemic
North and South Island, Challenger Plateau, Auckland and Antipodes Islands and Chatham Rise, from 37-1000m

Bentharca asperula (Dall, 1881)
Marine, Native - Non-endemic
Kermadec Trench. Worldwide, Eastern Pacific, from 4540m

Calloarca nuttingi Dall, Bartsch & Rehder, 1938
Marine, Native - Non-endemic
Kermadec Islands, from 0-195m

Hawaiarca alia Dall, Bartsch & Rehder, 1938
Marine, Native - Non-endemic
Middlesex and King Banks, and Three Kings and Kermadec Islands, Cape Reinga and north-eastern North Island and far south as East Cape, from 49-622m