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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
Gastropoda (Phylum) > Mollusca (Subphylum) > Caenogastropoda (Subclass) > Littorinimorpha (Order) > Truncatelloidea (Superfamily) > Assimineidae (Family)
Assimineidae
 
Genus: Assimineamap >
Assiminea vulgaris (Webster, 1905)
Height 3.5mm, Width 2mm, Endemic
Northland to Auckland. Splash zone and high tide [K.A]
Genus: Suterillamap >
Suterilla climoi Fukuda, Ponder & Marshall, 2006 (=neozelanica Brook & Marshall not Murdoch)
Endemic. Under stones on boulder beaches
Three Kings Islands, and upper North Island
Suterilla imperforata Fukuda, Ponder & Marshall, 2006
Height 2.5mm, Width 2mm, Endemic
North Island. Waihau Bay, SW of Cape Runaway. Among supralittoral stones with decaying algae [A]
Suterilla neozelanica (Murdoch, 1988)
Height 2.75mm, Width 2.3mm, Endemic
Three Kings Islands, Northland to Napier and Chatham Islands. In splash zone [ACM]