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Taxonomy
Family:
EPITONIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> [unassigned] Caenogastropoda (Order)
> Epitonioidea (Superfamily)
> Epitoniidae (Family)
> Janthina (Genus)
> umbilicata (Species)
Synonymised Names:
=Ianthina (Iodina) megastoma A. Adams, 1861
=Janthina globosa Blainville, 1822
=Janthina nitida A. Adams, 1861
Images: Janthina umbilicata d'Orbigny, 1840
From Tom Bowling Bay, Far North, NZ. 16mm
From Tom Bowling Bay, Far North, NZ. 16mm
From Tom Bowling Bay, Far North, NZ. 16mm
From Tom Bowling Bay, Far North, NZ. Close-up of sculpture. 16mm
Washed up on ocean beach, Far North, NZ. 15mm
Taxonomy
Family:
EPITONIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> [unassigned] Caenogastropoda (Order)
> Epitonioidea (Superfamily)
> Epitoniidae (Family)
> Janthina (Genus)
> umbilicata (Species)
Synonymised Names:
=Ianthina (Iodina) megastoma A. Adams, 1861
=Janthina globosa Blainville, 1822
=Janthina nitida A. Adams, 1861
Details: Janthina umbilicata d'Orbigny, 1840
Size/Grows to:
Height 20mm, Width 17mm
Distribution:
Kermadec Islands and Northern NZ
Geographical Range:
KA
Notes:
Marine, Pelagic, feeds mainly on colonial cnidarians (Physalia, Velella, Porpita). Fine and closely spaced growth ridges
Distribution Map
 
References and Publications
  • Beu, A.G. 2017 Evolution of Janthina and Recluzia (Mollusca: Gastropoda: Epitoniidae), Records of the Australian Museum, 63(3) (p.196)
  • Oliver, W.R.B. 1915 The Mollusca of the Kermadec Islands, Transactions and Proceedings of the New Zealand Institute, 47 (p.525)

*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
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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