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Mollusca (Phylum) > Gastropoda (Class) > Heterobranchia (Subclass) > Rissoelloidea (Superfamily) > Rissoellidae (Family)
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Rissoellidae

  • Rissoella (Rissoella) elongatospira Ponder, 1966
    Height 1.4mm, Width 0.8mm, Marine, Endemic. Common on low tidal seaweed
    North, South, Stewart and Chatham Islands ACFMAnE.
  • Rissoella (Rissoella) flemingi Ponder, 1968
    Height 1.7mm, Width 1.1mm, Marine, Endemic
    Cook Strait south to Stewart Island, Chatham and Southern Islands CFMAnE.
  • Rissoella (Zelaxitas) cystophora (Finlay, 1924)
    Height 1.1mm, Width 0.8mm, Marine, Endemic
    East coast of North, South, Stewart and Chatham Islands, mostly on large brown algae ACFME.
  • Rissoella (Zelaxitas) micra (Finlay, 1924)
    Height 0.6mm, Width 0.7mm, Marine, Endemic
    North and South Island. Fiordland, Stewart, Campbell and Chatham Islands ACFMAnE.
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 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
R =
Recent
Sf =
Subfossil
Fo =
Fossil