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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 - Caenogastropoda - Sorbeoconcha - Turritellidae: Turritellinae
Turritellidae: Turritellinae
 
Genus: Maoricolpusmap >
Maoricolpus finlayi Powell, 1940
Height 14mm, Width 5mm, Endemic
Far North and Three Kings area [A]
Maoricolpus roseus (Quoy & Gaimard, 1834) (=manukauensis Powell)
Height 94mm, Width 28mm, Endemic
North, South, Stewart and Chatham Islands. Introduced to Tasmania, Australia [ACFM]
Genus: Stiracolpusmap >
Stiracolpus ahiparanus (Powell, 1927)
Height 36mm, Width 8mm, Endemic
Ahipara and Auckland west coast, North Island. Below low tide to 60 metres [AC]
Stiracolpus pagoda (Reeve, 1849) (=ascensus Marwick, =blacki Marwick, =delli Marwick, =knoxi Marwick, =maorius Powell, =mixtus Finlay, =powelli Marwick, =tardior Marwick)
Height 41mm, Width 9mm, Endemic
Three Kings Islands, North, South and Chatham Islands [ACFM]
Stiracolpus symmetricus (Hutton, 1873)
Height 22mm, Width 7mm, Endemic. Always white
Otago, Foveaux Strait and Stewart Island [F]
Genus: Zeacolpusmap >
Zeacolpus vittatus (Hutton, 1873)
Height 98mm, Width 23mm, Endemic
North Island and northern South Island. From low tide to over 180 metres [AC]