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Taxonomy
Family:
EPITONIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> [unassigned] Caenogastropoda (Order)
> Epitonioidea (Superfamily)
> Epitoniidae (Family)
> Janthina (Genus)
> globosa (Species)
Synonymised Names:
=Janthina prolongata Blainville, 1822
Images: Janthina globosa Swainson, 1826
Bream Bay, Whangarei, Northland, NZ. 24mm
Bream Bay, Whangarei, Northland, NZ. 24mm
Washed up on Great Exhibition Bay, Far North, NZ. 24mm
Washed up on high tide line, Karikari Peninsula, Northland, NZ. 22mm
Taxonomy
Family:
EPITONIIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Caenogastropoda (Subclass)
> [unassigned] Caenogastropoda (Order)
> Epitonioidea (Superfamily)
> Epitoniidae (Family)
> Janthina (Genus)
> globosa (Species)
Synonymised Names:
=Janthina prolongata Blainville, 1822
Details: Janthina globosa Swainson, 1826
Size/Grows to:
Height 32mm, Width 26mm
Distribution:
Occasionally washed ashore on Northland east coast beaches, down to Awhitu Peninsula on the west coast, and eastern Bay of Plenty
Geographical Range:
A
Notes:
Violet Snail, Marine, Pelagic, feeds mainly on colonial cnidarians (Physalia, Velella, Porpita)
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.181)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.254)

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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