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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 - Veneroida - Family: Ungulinidae

Ungulinidae

 

Genus: Zemysia

 
Zemysia rakiura Powell, 1939
Width 11mm, Height 9mm, Endemic
Lower South Island, Stewart, Chatham and southern Islands [FMAnE.]
 
Endemic
Kermadec Islands [K.E.]
 
Zemysia zelandica (Gray, 1835)
Width 25mm, Height 24mm
North, South and Chatham Islands. From shallow water to about 90 metres [ACFM]

Genus: Zemysina

 
Zemysina globus (Finlay, 1926)
Height 26mm, Width 28mm, Thickness 20mm, Endemic
North, South, Stewart, Bounty, Auckland and Chatham Islands. In shallow water to about 90 metres [ACFMAnE.]
 
Zemysina striatula (Finlay, 1926)
Width 19mm, Height 17mm, Endemic
North, South and Chatham Islands. From low tide to over 75 metres [ACME.]