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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
N =
North Island
S =
South Island
E =
Endemic
I =
Introduced
Bivalvia - Heterodonta - Carditida - Family: Carditidae

Carditidae: Carditinae

 

Genus: Cardita

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

Carditidae: Carditamerinae

 

Genus: Pleuromeris

 
Width 2.6mm, Height 2.3mm
Off Three Kings Islands, 260 metres [AE.]
 
Width 2.2mm, Height 2.2mm
Off North Cape [AE.]
 
Pleuromeris marshalli (Marwick, 1924)
Width 6mm, Height 6.5mm
South, Stewart, Chatham, Bounty and Auckland Islands [FMAnE.]
 
Width 7.5mm, Height 9mm
Northland to Bay of Plenty. Dredged to around 110 metres [AE.]
 
Pleuromeris ultima Dell, 1956
Width 8.5mm, Height 7.5mm
Off Chatham Islands 210-600 metres [ME.]
 
Pleuromeris zelandica (Deshayes, 1854)
Width 10mm, Height 9mm
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
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
Off Three Kings Islands, 260 metres [AE.]
 
Hamacuna gibbosa (Powell, 1937)
Width 2mm, Height 2.3mm
Off Three Kings Islands, 260 metres [AE.]
 
Hamacuna otagoensis (Powell, 1927)
Width 1.2mm, 1.5mm
Off Otago Heads to Foveaux Strait [FE.]
 

Genus: Purpurocardia

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