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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
Gastropoda - Caenogastropoda - Neogastropoda - Family: Ptychatractidae

Ptychatractidae

 

Genus: Ceratoxancus

 
Ceratoxancus elongatus Sakurai, 1958
Kermadec Islands [K.]
 
Ceratoxancus leios Kantor & Bouchet, 1997
Kermadec Islands [K.]
 

Genus: Metzgeria

 
Metzgeria problematica (Ponder, 1968)
Height 32mm, Width 12mm
Off Otago, trawled around 120 metres [FE.]
Metzgeria shirleyi Cernohorsky, 1980
Height 52mm, Width 24mm
Off Mayor and Aldermen Islands, Bay of Plenty, Trawled 357-666 metres [AE.]