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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 - Trochidae: Trochinae
Trochidae: Trochinae
 
Genus: Clanculus (Clanculopsis)map >
Height 8mm, Width 9.5mm, Endemic
Kermadec Islands, low tide to 15 metres, under stones [K.]
Genus: Clanculus (Euclanculus)map >
Clanculus (Euclanculus) persica Habe & Shikama, 1964
Width 25mm
Off Choshi, Chiba Prefecture, Honshu, Japan, and off Kermadec Islands 235-280 metres [K.]
Genus: Clanculus (Paraclanculus)map >
Height 12mm, Width 12mm, Endemic
Northland to East Cape. In beach drift and below low tide to over 25 metres [A]
Genus: Coelotrochusmap >
Coelotrochus carinatus (Marshall, 1998)
Width 4.3mm, Height 3.8mm, Endemic
Off Three Kings Islands, off Cape Reinga. Off White Island [A]
Coelotrochus carmesinus (Webster, 1908)
Height 6mm, Width 8mm, Endemic
Northland to East Cape. Rare, under stones 5-20 metres, and in beach drift [A]
Coelotrochus chathamensis (Hutton, 1873) (=aucklandica E.A.Smith, =cookiana Powell, =dunedinensis Suter)
Height 7mm, Width 9mm, Endemic
Southern North Island, Stewart, Chatham and southern Islands [CFMAn]
Coelotrochus davegibbsi Marshall, 1998
Width 6.5mm, Endemic
Off Three Kings Islands 18-123 metres, and north of Cape Reinga 88 metres [A]
Coelotrochus oppressus (Hutton, 1878)
Height 5.5mm, Width 6mm, Endemic
Three Kings Islands, North Island to Mahia [AC]
Coelotrochus polychromus Marshall, 1998
Width 5.9mm, Endemic
Off Three Kings Islands, 14-88 metres [A]
Coelotrochus rex Marshall, 1998
Width 5.8mm, Height 4.3mm, Endemic
Off Three Kings Islands, 102-440 metres [A]
Coelotrochus tiaratus Quoy & Gaimard, 1834
Width 18mm, Height 15mm, Endemic
North, South and Stewart Island [ACF]
Coelotrochus viridis (Gmelin, 1791)
Width 30mm, Height 25mm, Endemic
North, South, Stewart and Chatham Islands [ACFM]
Genus: Tectusmap >
Tectus royanus (Iredale, 1912)
Height 101mm, Width 102mm, Endemic
Raoul Island, Kermadec Islands, on rocks from low water to 6-8 metres, dead specimens to 29 metres [K.]
Genus: Trochus (Camelotrochus)map >
Width 13mm, Height 11mm, Endemic
Off Three Kings Islands, Northland to East Cape. 0-228 metres and in beach drift [A]