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Key to Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approxomation of the range of each species within New Zealand.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
FW =
L =
E =
I =
Bivalvia - Heterodonta - Carditida - Family: Carditidae

Carditidae: Carditinae


Genus: Cardita

Cardita distorta Reeve, 1843 (=aoteana Finlay)
Length 32mm, Width 21mm, Endemic
North, South, Stewart and Chatham Islands. From low tide to about 180 metres [ACFMAnE.]

Carditidae: Carditamerinae


Genus: Pleuromeris

Width 2.6mm, Height 2.3mm, Endemic
Off Three Kings Islands, and isolated records off Northland [AE.]
Pleuromeris finlayi Powell, 1938
Pleuromeris hectori Powell, 1938
Width 2.2mm, Height 2.2mm, Endemic
Off Northland to East Cape [AE.]
Pleuromeris marshalli (Marwick, 1924)
Width 6mm, Height 6.5mm, Endemic
South, Stewart, Chatham, Bounty and Auckland Islands [FMAnE.]
Width 7.5mm, Height 9mm, Endemic
Northland to Bay of Plenty. Dredged to around 110 metres [AE.]
Pleuromeris ultima Dell, 1956
Width 8.5mm, Height 7.5mm, Endemic
Off Chatham Islands 210-600 metres [ME.]
Pleuromeris zelandica (Deshayes, 1854)
Width 10mm, Height 9mm, Endemic
North, South and Stewart Island. Below low tide to over 200 metres [ACFE.]

Carditidae: Thecalinae


Genus: Powellina

Powellina brookesi Finlay, 1926
Width 13mm, Height 7mm, Endemic
Northland to Bay of Plenty and East Cape. Under stones at low tide [AE.]

Carditidae: Venericardiinae


Genus: Hamacuna

Hamacuna aupouria (Powell, 1937)
Width 2.1mm, Height 2.3mm, Endemic
Off Three Kings Islands, 260 metres [AE.]
Hamacuna gibbosa (Powell, 1937)
Width 2mm, Height 2.3mm, Endemic
Off Three Kings Islands, 260 metres [AE.]
Hamacuna otagoensis (Powell, 1927)
Width 1.2mm, 1.5mm, Endemic
Off Otago Heads to Foveaux Strait [FE.]

Genus: Purpurocardia

Purpurocardia purpurata (Deshayes, 1854)
Width 45mm, Height 40mm, Endemic
North, South, Stewart, Chatham and Auckland Islands [ACFMAnE.]
Purpurocardia reinga (Powell, 1933)
Width 30mm, Height 22mm, Endemic
North Island, Far North [AE.]