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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 - Veneroida - Family: Cyamiidae

Cyamiidae

 

Genus: Cyamiomactra

 
Width 4.5mm, Height 3mm
Southern South Island and Subantarctic Islands [FMAnE.]
 

Genus: Kidderia

 
Kidderia acrobeles (Suter, 1913)
Width 4mm, Height 3mm
Off Stewart, Snares and Antipodes Islands [FAnE.]
 
Kidderia aupouria Powell, 1933
Length 2.7mm, Height 1.7mm
North Island. Far North, in shell sand [AE.]
 
Kidderia bicolor (Martens, 1885)
Length 5mm, Height 3.7mm
Macquarie Islands. Also South Georgia, Kerguelen and Heard Islands. Intertidal under stones and among seaweed [AnE.]
 
Kidderia campbellica Odhner, 1924
Length 7mm, Height 4.5mm
Campbell and Antipodes Islands [AnE.]
 
Kidderia fiordlandica Fleming, 1948
Width 2.3mm, Height 1.5mm
South Island. Fiordland, Stewart Island and Chatham Islands [FME.]
 
Kidderia marshalli Fleming, 1948
Length 4.5mm, Height 2.7mm
South Island, Fiordland and Auckland Islands [FAnE.]
 
Kidderia oblonga (E.A.Smith, 1899)
Length 8mm, Height 4mm
Macquarie Island [An]
 
Kidderia rakiura Powell, 1939
Length 8.5mm, Height 5mm
Stewart and Chatham Islands [FME.]
 
Kidderia subquadrata (Pelseneer, 1903)
Width 3.5mm, Height 2mm
Macquarie Island. Attached to algae in rock pools [An]
 

Genus: Kidderia (Costokidderia)

 
Width 7mm, Height 4mm
Off Auckland Islands, Campbell and Antipodes Islands [AnE.]
 
Length 3.8mm, Height 2.8mm
Throughout NZ and Chatham Islands [ACFM]
 

Genus: Legrandina

 
Width 2mm, Height 1.7mm
Auckland and Campbell Islands [AnE.]
 
Legrandina harrisonae Powell, 1935
Width 1.7mm, Height 1.5mm
Stewart Island [FE.]
 
Legrandina turneri Powell, 1939
Width 2.8mm, Height 2.4mm
Southern South Island, Stewart and Chatham Islands, 0-20 fathoms [FME.]
 

Genus: Perrierina

 
Perrierina georgiana Fleming, 1948
Length 1.4mm, Height 1.3mm
South Island. Fiordland [FE.]
 
Perrierina insulana Powell, 1933
Length 1.9mm, Height 1.6mm
Stewart, Snares and Chatham Islands [FMAnE.]
 
Perrierina matai Fleming, 1948
Length 1.5mm, Height 1.3mm
South Island. Fiordland [FE.]
 
Perrierina mestayerae Powell, 1933
Length 2mm, Height 1.5mm
Off Otago and Snares Islands [FAnE.]
 
Perrierina perstriata Fleming, 1948
Width 2.6mm, Height 2.1mm
South Island. Fiordland [FE.]
 
Length 1.8mm, Height 1.4mm
Mernoo Bank, east of Cook Strait [CE.]
 
Perrierina substriata Powell, 1935
Width 2.7mm, Height 2.2mm
Off Three Kings Islands. In fish stomachs [AE.]
 
Perrierina taxodonta Bernard, 1897
Width 3.5mm, Height 2.5mm
South Island. Off eastern Otago, Foveaux Strait and Stewart Island [FE.]