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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.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
FW =
L =
N =
North Island
S =
South Island
E =
I =
Polyplacophora - Loricata - Chitonida - Family: Acanthochitonidae

Acanthochitonidae: Acanthochitoninae


Genus: Acanthochitona

Length 20mm, Width 10mm
North Island, Tauranga. Sandbank in middle of harbour [AE.]
Acanthochitona zelandica (Quoy & Gaimard, 1835)
Length 31mm, Width 20mm
North, South, Stewart and Auckland Islands. Intertidal under stones and in rock pools [ACFAnE.]

Genus: Cryptoconchus

Cryptoconchus porosus (Burow, 1815)
Length 75mm, Width 35mm
North, South, Stewart and Chatham Islands [ACFME.]

Genus: Notoplax

Notoplax aupouria Powell, 1937
Off Three Kings Islands, 92 metres [AE.]
Notoplax facilis Iredale & Hull, 1931
Length 26mm, Width 12mm
South Island. Otago, in deep rock pools [ACFE.]
Cook Strait, off Stephen Island, 200 metres living on sponge [CE.]
Notoplax mariae (Webster, 1908)
Length 35mm, Width 18mm
North, South and Stewart Island. Low tide to about 40 metres [ACFE.]
Notoplax rubiginosa (Hutton, 1872) (=oliveri Ashby)
Length 18mm, Width 10mm
North, South, Stewart and Chatham Islands. 10-80 metres [ACFME.]
Notoplax violacea (Quoy & Gaimard, 1835)
Length 60mm, Width 35mm
North, South and Chatham Islands. Low tide on under sides of boulders [ACFME.]
Notoplax websteri (Powell, 1937)
Off Three Kings Islands, 92 metres [AE.]

Genus: Pseudotonicia

Pseudotonicia cuneata (Suter, 1908)
Length 45mm, Width 22mm
North and northern part of South Island. Low tide to about 7 metres [ACE.]