Species Images
A pelagic species washed up after rough weather. 16mm
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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.
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

Janthina exigua (Lamarck, 1822)

Classification:Gastropoda - Caenogastropoda - Ptenoglossa
Family:JANTHINIDAE
Size/Grows to:Height 23mm, Width 21mm
Distribution:Pelagic. Commonly washed ashore on west coast beaches
Geographical Range:ACFM
Notes:
Violet Snail. Strong and widely spaced growth ridges
References and Publications:
  • Beu, A.G. 2017: Evolution of Janthina and Recluzia (Mollusca: Gastropoda: Epitoniidae), Records of the Australian Museum, 63(3) (p.191)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.254)

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