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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 =
Bivalvia - Heterodonta - Veneroida - Family: Neoleptonidae



Genus: Neolepton

Neolepton antipodum (Filhol, 1880)
Length 3.6mm, Width 3mm
North, South, Stewart, Chatham Islands, and southern islands, recorded from the intertidal zone (living on Corallina) down to at least 310m [K.ACFMAn]
Neolepton powelli Dell, 1964
Length 3.2mm, Height 2.7mm
Macquarie Island, 120 metres [An]
Neolepton sublaevigatum (Powell, 1937)
Length 2.8mm, Height 2.3mm, Endemic
Off Three Kings Islands, 260 metres [ACFME.]
Neolepton subobliquum (Powell, 1937)
Length 2mm, Height 1.9mm, Endemic
Off Three Kings Islands, 260 metres [AE.]
Neolepton triangulare (Dell, 1956)
Length 2.6mm, Height 2.3mm, Endemic
Chatham Rise and off Chatham Islands [ME.]

Genus: Pachykellya

Pachykellya bernardi Powell, 1927
Width 1.2mm, Height 1.4mm, Endemic
Fiordland [FE.]
Width 1mm, Height 0.8mm, Endemic
Off Puysegur Point, Fiordland, Chatham and Auckland Islands [FMAnE.]
Pachykellya edwardsi Bernard, 1897
Width 1.2mm, Height 1.5mm, Endemic
Stewart Island and Otago to Fiordland [FE.]
Pachykellya minima Powell, 1931
Width 0.9mm, Height 0.8mm, Endemic
North, South, Stewart, Chatham and southern Islands [ACFMAnE.]
Pachykellya rotunda Powell, 1927
Width 1.5mm, Height 1.2mm, Endemic
Off Puysegur Point, Fiordland. Off Snares Island [FAnE.]

Genus: Puyseguria

Puyseguria cuneata Powell, 1927
Width 1.7mm, Height 1.3mm, Endemic
Off Puysegur Point, Fiordland to Stewart Island [FE.]
Puyseguria prognata Powell, 1927
Width 1.3mm, Height 1.3mm, Endemic
Off Puysegur Point, Fiordland [FE.]
Puyseguria tani Powell, 1939
Width 1.3mm, Height 1.2mm, Endemic
Stewart Island. In shell sand [FE.]
Puyseguria wanganuica Powell, 1931