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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:
Off south of the South Island and Snares Islands
Geographical Range:
FAnE.
Notes:
Marine, 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)

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