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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.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
FW =
L =
E =
I =
Gastropoda - Caenogastropoda - Ptenoglossa - Family: Newtoniellidae

Newtoniellidae: Newtoniellinae


Genus: Cerithiella

Height 7mm, Diameter 1.9mm, Endemic
Off Chatham Islands [FME.]
Cerithiella stiria (Webster, 1906)
Height 9mm, Diameter 2.0mm, Endemic
Off Northland east coast to Bay of Plenty. West Norfolk Ridge and Kermadec Islands [K.AE.]

Genus: Trituba (Granulotriforis)

Height 9.1mm, Diameter 2.2mm, Endemic
Three Kings Islands, 622-805 metres [AE.]
Height 23.0mm, Diameter 4.5mm, Endemic
Three Kings Islands, 102-805 metres [AE.]
Height 8.7mm, Diameter 2.1mm, Endemic
Three Kings Islands, 805 metres [AE.]
Height 5.35mm, Diameter 1.3mm, Endemic
Three Kings Islands, 252-805 metres [AE.]

Genus: Trituba (Paramendax)

Height 5.15mm, Width 1.3mm, Endemic
Off Three Kings Islands and Bay of Islands, 46-805 metres [AE.]
Height 8.6mm, Diameter 1.6mm, Endemic
Off Three Kings Islands [AE.]

Newtoniellidae: Adelacerithiinae


Genus: Adelacerithium

Adelacerithium mirabile Marshall, 1984
Height 15mm, Endemic
Ranfurly Bank, off East Cape [AE.]

Newtoniellidae: Eumetulinae


Genus: Ataxocerithium

Ataxocerithium huttoni (Crossmann, 1895)
Height 12mm, Width 6mm, Endemic
Off Three Kings Islands to Cook Strait, Otago and off Campbell Islands [ACFE.]

Genus: Eumetula

Height 3mm, Diameter 1.0mm, Endemic
Off Macquarie Island [AnE.]

Genus: Eumetula (Altispecula)

Height 6mm, Width 1.8mm, Endemic
Off Bounty Islands [AnE.]