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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: Borsoniidae

Borsoniidae

 

Genus: Apaturris

 
Apaturris expeditionis (Oliver, 1915)
Kermadec Islands [K.E.]
 

Genus: Awateria

 
Awateria optabilis (Murdoch & Suter, 1906)
Height 44mm, Width 19mm
Off North Island east coast, recorded from Great Barrier Island to Kaikoura [AE.]

Genus: Bathytoma

 
Bathytoma murdochi Finlay, 1930 (=finlay Powell)
Height 20mm, Width 9mm
Northland east coast to Mahia, trawled around 65-450 metres [AE.]

Genus: Bathytoma (Riuguhdrilla)

 
Height 40mm, Width 17mm
Off North Island and Chatham Rise. Trawled from around 400-1300 metres [ACFME.]

Genus: Maoritomella

 
Maoritomella albula (Hutton, 1873)
Height 9mm, Width 3.7mm
North, South and Stewart Island [ACFE.]
Maoritomella ischna (Watson, 1881)
Height 8.5mm, Width 2.25mm
East of East Cape, 1280 metres [AE.]
 
Maoritomella multiplex (Webster, 1906)
Height 5.5mm, Width 2.5mm
Trawled off North Island [AE.]
 
Height 10.5mm, Width 4mm
Off Hawkes Bay, North Island, 180 metres [CE.]
 

Genus: Phenatoma

 
Phenatoma rosea (Quoy & Gaimard, 1833)
Height 32mm, Width 11mm
North, South and Chatham Islands [ACFME.]
Phenatoma zelandica (E.A.Smith, 1877)
Height 25mm, Width 10mm
North and South Islands, as far south as Otago Heads [ACFE.]
 

Genus: Zemacies

 
Zemacies excelsa Sysoev & Bouchet, 2001
Kermadec Islands [K.]