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Taxonomy
Family:
TRIVIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Cypraeoidea (Superfamily)
> Triviidae (Family)
> Ellatrivia (Genus)
> merces (Species)
Genus Synonyms:
=Austrotrivia Fehse, 2002
=Fossatrivia Schilder, 1939
=Trivia J.E. Gray, 1837
=Niveria Jousseaume, 1884
Synonymised Names:
=Cypraea australis Lamarck, 1822
=Ellatrivia memorata (Finlay, 1926)
=Ellatrivia merces addenda Iredale, 1931
=Trivia merces (Iredale, 1924)
=Triviella maoriensis Mestayer, 1927
=Triviella memorata Finlay, 1926
=Triviella merces Iredale, 1924
Images: Ellatrivia merces (Iredale, 1924)
In beach drift, Taupiri Bay, Northland, NZ. 15mm
In a sheltered gut at extreme low tide, Northland, NZ. 13mm
On orange sponge in about 5 metres, Parengarenga Harbour, Far North, NZ
Parengarenga Harbour, Far North, NZ
Holotype of Triviella memorata Finlay, collected Ahipara, Far North, NZ (MA70775). © Auckland Museum (CC-BY)
Taxonomy
Family:
TRIVIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> Littorinimorpha (Order)
> Cypraeoidea (Superfamily)
> Triviidae (Family)
> Ellatrivia (Genus)
> merces (Species)
Genus Synonyms:
=Austrotrivia Fehse, 2002
=Fossatrivia Schilder, 1939
=Trivia J.E. Gray, 1837
=Niveria Jousseaume, 1884
Synonymised Names:
=Cypraea australis Lamarck, 1822
=Ellatrivia memorata (Finlay, 1926)
=Ellatrivia merces addenda Iredale, 1931
=Trivia merces (Iredale, 1924)
=Triviella maoriensis Mestayer, 1927
=Triviella memorata Finlay, 1926
=Triviella merces Iredale, 1924
Details: Ellatrivia merces (Iredale, 1924)
Size/Grows to:
Length 16mm, Width 11mm
Distribution:
Northland to Bay of Plenty and Mahia Peninsula. Also found as far south as Castlepoint. Also recently recorded from the Chatham Islands
Geographical Range:
ACM
Notes:
Bean Cowrie, Marine
Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.152)
  • Cernohorsky, W.O. 1971 Fossil and recent Cypraeacea (Mollusca: Gastropoda) of New Zealand with descriptions of new species, Records of the Auckland Institute and Museum, 8 (p.113)
  • Finlay, H. 1926 A Further Commentary on New Zealand Molluscan Systematics, Transactions and Proceedings of the Royal Society of New Zealand, 57 (p.396)

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
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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