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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 - Vetigastropoda - Seguenziidae: Asthelysinae
Seguenziidae: Asthelysinae
 
Genus: Asthelysmap >
Asthelys cf. simplex (Watson, 1879)
Width 3.8mm, Height 3.8mm, Endemic
Tasman Basin, off Westport, 4419-4421 metres [C]
Genus: Thelyssinamap >
Thelyssina sterrha Marshall, 1983
Width 3.4mm, Height 3.05mm, Endemic
Off Three Kings Islands, 805 metres [A]