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Taxonomy
Family: Subfamily:
NATICIDAE: POLINICINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Naticoidea (Superfamily)
> Naticidae (Family)
> Polinicinae (Subfamily)
> Polinices (Genus)
> tawhitirahia (Species)
Images: Polinices tawhitirahia Powell, 1965
From off Northland, NZ. 26mm
From off Northland, NZ. 26mm
In shell drift, Far North, NZ. 30mm
Holotype, collected Feb 1965, 37 metres, Poor Knights Islands, Northland, NZ (MA71242). © Auckland Museum (CC-BY)
Holotype, collected Feb 1965, 37 metres, Poor Knights Islands, Northland, NZ (MA71242). © Auckland Museum (CC-BY)
Holotype, collected Feb 1965, 37 metres, Poor Knights Islands, Northland, NZ (MA71242). © Auckland Museum (CC-BY)
Taxonomy
Family: Subfamily:
NATICIDAE: POLINICINAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Naticoidea (Superfamily)
> Naticidae (Family)
> Polinicinae (Subfamily)
> Polinices (Genus)
> tawhitirahia (Species)
Details: Polinices tawhitirahia Powell, 1965
Size/Grows to:
Height 36mm, Width 32mm
Distribution:
Northland to Poor Knights Islands. Also Norfolk Islands
Geographical Range:
KA
Notes:
Marine, Heavy shell with thick callus that completely fills umbilicus. Colourless periostracum, fewer protoconch whorls than P. putealis, and a broader first protoconch whorl
Distribution Map
 
References and Publications
  • Marshall, B.A. 2001 Polinices update 2, Australasian Shell News, 112 (p.7)
  • Brook, F.J., Marshall, B.A. 1998 The coastal molluscan fauna of the northern Kermadec Islands, southwest Pacific Ocean, Journal of the Royal Society of New Zealand, 28 (p.220)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.155)
  • Powell, A.W.B. 1976 On the considerable influx of warm water molluscs that have invaded northern New Zealand waters within recent years, Records of the Auckland Institute and Museum, 13 (p.147)
  • Sep/1967 Polinices tawhitirahia, Poirieria, 4(2)
  • Powell, A.W.B. 1967 New Zealand Molluscan Systematics with Descriptions of New Species: Part 6, Records of the Auckland Institute and Museum, 6(3) (p.185)
  • Powell, A.W.B. 1965 New Zealand Molluscan Systematics with Descriptions of New Species: Part 5, Records of the Auckland Institute and Museum, 6(2) (p.163) Original Description

Key to Geographical Ranges
NZ Map showing 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 approximation 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
N =
North Island
S =
South Island
E =
Endemic
I =
Introduced
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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