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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
Gastropoda - Neritimorpha - (Neritimorpha) - Family: Neritidae

Neritidae

 

Genus: Nerita (Lisanerita)

 
Nerita (Lisanerita) melanotragus E.A.Smith, 1884 (=atramentosa of authors not Reeve)
Width 33mm, Height 29mm, Black Nerita
North Island, and northern part of South Island. Also Kermadec Islands, Tasmania and New South Wales to Western Australia. Common on mid-tidal rocks [K.AC]

Genus: Nerita (Ritena)

 
Nerita (Ritena) plicata Linnaeus, 1758
Height 25mm, Width 25mm
Indo-West Pacific. Australia, Kermadec Islands [K.]