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Species List for Genus: Cylichna
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Mollusca (Phylum) > Gastropoda (Class) > Heterobranchia (Subclass) > Euthyneura (Infraclass) > Tectipleura (Subterclass) > Cephalaspidea (Order) > Cylichnoidea (Superfamily) > Cylichnidae (Family) > Cylichna (Genus)
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  • Genus: Cylichna

  • Cylichna bulloidea Dell, 1956
    Height 4.3mm, Width 2.5mm
    Marine, Native - Endemic
    Lower North Island and Chatham Rise to Chatham Islands, 280-600 metres
    CM
  • Cylichna thetidis Hedley, 1903
    Height 11mm, Width 4mm
    Marine, Shell narrow, elongate-cylindrical, white under a pale yellow periostracum. Columella thickened, with a single strong fold
    Northland to Bay of Plenty and occasional occurences as far south as Wellington. Also New South Wales, Australia
    KA
  • Cylichna zealandica T.W. Kirk, 1880
    Height 13mm, Width 5.5mm
    Marine, Native - Endemic, Closely resembling thetidis, but has a sudden narrowing of the shell at the apex, and the columellar fold is very slight to obsolete
    North Island down to Cook Strait. In shell sand and dredged to at least 60 metres
    AC
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