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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 =
E =
I =
Gastropoda - Caenogastropoda - Hypsogastropoda - Family: Triviidae

Triviidae: Triviinae


Genus: Ellatrivia

Ellatrivia merces (Iredale, 1924)
Length 16mm, Width 11mm, Bean Cowrie
Northland to Bay of Plenty and Mahia Peninsula. Also found as far south as Castlepoint. Also recently recorded from the Chatham Islands [ACM]

Genus: Semitrivia

Semitrivia pellucidula (Reeve, 1846) (=Trivirostra pellucidula Brook & Marshall not Reeve)
Length 10.5mm
Kermadec Islands [K.]

Genus: Trivellona

Trivellona valerieae (Hart, 1996)
Length 15mm
Kermadec Ridge, Norfolk Ridge, Three Kings Ridge and off East Cape, 356-1000 metres [K.A]

Genus: Trivia (Trivirostra)

Length 11mm
Widely distributed throughout the tropical Indo-West Pacific region. Australia and Kermadec Islands. Off Northland east coast [K.A]

Triviidae: Eratoinae


Genus: Notoficula

Height 13mm, Width 9mm, Endemic
South Island, off Taiaroa Head [FE.]

Genus: Proterato

Proterato lachryma (Gray, 1832)
Length 7mm
Eastern Australia, Torres Strait, Queensland to south-western WA, and the Kermadec Islands [K.]