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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
Mollusca (Phylum) > Gastropoda (Class) > Caenogastropoda (Subclass) > Sorbeoconcha (Order) > Cerithioidea (Superfamily) > Cerithiidae (Family) > Bittiinae (Subfamily)
Cerithiidae: Bittiinae
 
Genus: Zebittiummap >
Zebittium editum Powell, 1930
Height 6mm, Width 2mm, Endemic
Off Thee Kings and Poor Knights Islands [A]
Zebittium exile (Hutton, 1873)
Height 5.5mm, Width 2mm, Endemic
North, South and Stewart Island [ACF]
Zebittium laevicordatum (Powell, 1937)
Height 4mm, Width 1.5mm, Endemic
Off Three Kings Islands [A]