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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.
K=
Kermadec Islands
A=
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
C=
Cookian - Lower North Island and the northern part of the South Island
F=
Forsterian - Otago, Fiordland and Stewart Island
M=
Moriorian - Chatham Islands, Pitt Island
An=
Antipodean - Subantarctic Islands of New Zealand
FW =
Freshwater
L =
Land
E =
Endemic
I =
Introduced
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
Endemic
[E.]
 
Pleuromeris hectori Powell, 1938
Endemic
[E.]
 
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.]