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Taxonomy
Family:
CYLICHNIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Cephalaspidea (Order)
> Cylichnoidea (Superfamily)
> Cylichnidae (Family)
> Cylichna (Genus)
> zealandica (Species)
Genus Synonyms:
=Bulla (Cylichna) Lovén, 1846
=Bullinella Newton, 1891
=Cylichna (Acrostemma) Cossmann, 1889
=Cylichna (Cylichnopsis) Cossmann, 1904
=Cylichnella (Bullinella) Newton, 1891
=Cylindrella Swainson, 1840
=Eocylichna Kuroda & Habe, 1952
Images: Cylichna zealandica T.W. Kirk, 1880
In beach drift, Waitangi, Bay of Islands, NZ. 8.5mm. © rights reserved
Syntype, collected NZ - no other data (M.001095). © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)
Taxonomy
Family:
CYLICHNIDAE
Full Classification:
Mollusca (Phylum)
> Gastropoda (Class)
> Heterobranchia (Subclass)
> Euthyneura (Infraclass)
> Tectipleura (Subterclass)
> Cephalaspidea (Order)
> Cylichnoidea (Superfamily)
> Cylichnidae (Family)
> Cylichna (Genus)
> zealandica (Species)
Genus Synonyms:
=Bulla (Cylichna) Lovén, 1846
=Bullinella Newton, 1891
=Cylichna (Acrostemma) Cossmann, 1889
=Cylichna (Cylichnopsis) Cossmann, 1904
=Cylichnella (Bullinella) Newton, 1891
=Cylindrella Swainson, 1840
=Eocylichna Kuroda & Habe, 1952
Details: Cylichna zealandica T.W. Kirk, 1880
Size/Grows to:
Height 13mm, Width 5.5mm
Distribution:
Kermadec Islands, Middlesex and King Banks, Three Kings Islands, north-eastern and south-western North Island, and northern South Island, from 0-805m
Type Data:
  • Waikanae Beach, NZ, (holotype)
Notes:
Marine, Native - Endemic
Description:
Closely resembling thetidis, but has a sudden narrowing of the shell at the apex, and the columellar fold is very slight to obsolete

Distribution Map
 
References and Publications
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.271)
  • Kirk, T.W. 1880 Descriptions of new marine shells., Transactions of the New Zealand Institute, 12 (p.307) Original Description

NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil
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