Species List for Genus: Janthina
Mollusca (Phylum) > Gastropoda (Class) > Caenogastropoda (Subclass) > Ptenoglossa (Order) > Epitonioidea (Superfamily) > Epitoniidae (Family) > Janthina (Genus)
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Genus: Janthina
Janthina janthina (Linnaeus, 1758)
(=violacea Röding)
Height 38mm, Width 40mm, Violet Snail, Marine, Pelagic, feeds mainly on colonial cnidarians (Physalia, Velella, Porpita)
World wide ACFM
Janthina exigua (Lamarck, 1822)
Height 23mm, Width 21mm, Violet Snail, Marine, Pelagic, feeds mainly on colonial cnidarians (Physalia, Velella, Porpita). Strong and widely spaced growth ridges
Commonly washed ashore on west coast beaches ACFM
Janthina globosa Swainson, 1826
Height 32mm, Width 26mm, Violet Snail, Marine, Pelagic, feeds mainly on colonial cnidarians (Physalia, Velella, Porpita)
Occasionally washed ashore on Northland east coast beaches, down to Awhitu Peninsula on the west coast, and eastern Bay of Plenty A
Janthina umbilicata d'Orbigny, 1840
Height 16mm, Width 15mm, Marine, Pelagic, feeds mainly on colonial cnidarians (Physalia, Velella, Porpita). Fine and closely spaced growth ridges
Kermadec Islands and Northern NZ KA
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 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
E =
Endemic
I =
Introduced
R =
Recent
Sf =
Subfossil
Fo =
Fossil