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

Trituba (Granulotriforis) blacki (Marshall, 1977)

Classification:Gastropoda - Caenogastropoda - Ptenoglossa
Family:NEWTONIELLIDAE
Size/Grows to:Height 23.0mm, Diameter 4.5mm
Distribution:Three Kings Islands, 102-805 metres
Geographical Range:AE.
References and Publications:
  • Marshall, B.A. 1980: The systematic position of Triforis Deshayes (Mollusca: Gastropoda), New Zealand Journal of Zoology, 7(1) (p.87)
  • Marshall, B.A. May/1977: The Recent New Zealand species of Triforis (Gastropoda: Triforidae), New Zealand Journal of Zoology, 4(2) (p.107)