Species Images
Bluff, at half tide under overhanging rocks. 22mm
In shallow cave at low tide, Far North, NZ. 15mm
In shallow cave at low tide, Far North, NZ. 15mm
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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 =
N =
North Island
S =
South Island
E =
I =

Trimusculus conica (Angas, 1867)

Classification:Mollusca (Phylum) > Gastropoda (Class) > Heterobranchia (Subclass) > Ellobiida (Order) > Ellobioidea (Superfamily) > Trimusculidae (Family) > Trimusculus (Genus)
Size/Grows to:Length 25mm, Width 22mm, Height 15mm
Synonyms:(=Gadinalea Iredale, =Gadinia Gray,1824)
(=nivea Hutton)
Distribution:Throughout NZ including Stewart and Chatham Islands. Also eastern and southern Australia, and Kermadecs
Geographical Range:KACFM
References and Publications:
  • 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.232)
  • Walsby, J.R., Morton, J.E. 1982: Chitons, Limpets & Topshells & Pulmonates (Amphineura, Archaeogastropoda & Pulmonata), Marine Molluscs, University of Auckland, Leigh Marine Laboratory, 1 (p.82)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.291)

Note: Localities are approximate, and represent only some of the known localities for the species.

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