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Taxonomy
Family:
RISSOIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Rissooidea (Superfamily)
> Rissoidae (Family)
> Powellisetia (Genus)
> porcellana (Species)
Synonymised Names:
=Dardanula convexispira Powell, 1955
=Notosetia convexispira Powell, 1955
=Rissoa (Setia) porcellana Suter, 1908
=Rissoa (Setia) stewartiana Suter, 1908
=Rissoa porcellana Suter, 1908
=Rissoa stewartiana Suter, 1908
Images: Powellisetia porcellana (Suter, 1908)
Holotype of Dardanula convexispira Powell, 91 metres, off Snares Islands, NZ (MA71223). © Auckland Museum (CC-BY)
Taxonomy
Family:
RISSOIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Rissooidea (Superfamily)
> Rissoidae (Family)
> Powellisetia (Genus)
> porcellana (Species)
Synonymised Names:
=Dardanula convexispira Powell, 1955
=Notosetia convexispira Powell, 1955
=Rissoa (Setia) porcellana Suter, 1908
=Rissoa (Setia) stewartiana Suter, 1908
=Rissoa porcellana Suter, 1908
=Rissoa stewartiana Suter, 1908
Details: Powellisetia porcellana (Suter, 1908)
Size/Grows to:
Height 1.8mm, Width 1.3mm
Distribution:
Southern South Island as far north as Milford Sound, and Stewart, Snares, Auckland, Antipodes and Bounty Islands
Notes:
Marine, Native - Endemic
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.99)
  • Ponder, W.F. 1965 A revision of the New Zealand recent species previously known as Notosetia Iredale, 1915 (Rissoidae, Gastropoda), Records of the Auckland Institute and Museum, 6(2) (p.104)
  • Suter, H. 1908 Additions to the marine molluscan fauna of New Zealand, with descriptions of new species, Proceedings of the Malacological Society of London, 8 (p.30) Original Description

*98 © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)

NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil