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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
Bivalvia - Protobranchia - Nuculanida - Family: Nuculanidae

Nuculanidae: Nuculaninae

 

Genus: Jupiteria

 
Jupiteria manawatawhia (Powell, 1937)
Height 2.9mm, Width 4.2mm, Thickness 2mm
Off Three Kings Islands, Ranfurly Bank, East Cape and Challenger Plateau [ACE.]
 
Jupiteria wolffi Dell, 1956
Height 5mm, Length 8mm
Off Northland, Bay of Plenty, Otago, Chatham Rise and off Chatham Islands [ACFME.]
 

Genus: Nuculana

 
Height 2.3mm, Width 4.8mm
Tasman Sea. Off West Coast North Island 980 metres [CE.]

Genus: Poroleda

 
Poroleda lanceolata (Hutton, 1885)
Length 18mm, Height 6mm
North, South, Stewart and Chatham Islands. In soft mud from 10-180 metres [ACFME.]

Genus: Saccella

 
Saccella hedleyi (Fleming, 1951) (=zealedaformis Dell)
Length 8.2mm, Height 5mm, Thickness 4mm
North Island and Chatham Rise [ACME.]
Saccella maxwelli Beu, 2006 (=bellula of authors not Adams)
Length 10mm, Height 5.2mm, Thickness 4mm
North, South, Stewart and Chatham Islands [ACFME.]

Nuculanidae: Ledellinae

 

Genus: Bathyspinula (Acutispinula)

 
Height 10.3mm, Width 18.6mm
Widely distributed in the Pacific. Kermadecs [K.A]
 
Length 3.9mm, Height 2.7mm
Kermadec Trench, 5850-5900 metres [K.E.]
 
Height 3.3mm, Width 5.6mm
Tasman Sea, 3580 metres [FE.]
 

Genus: Ledella

 
Ledella finlayi Powell, 1935
Length 4.5mm, Height 3mm
Off North Cape to Otago and Chatham Islands [ACFME.]
 
Ledella herdmani Dell, 1953
Length 2.5mm, Height 1.8mm
East Cape to Otago and Chatham Rise [ME.]
 
Ledella kermadecensis Knudsen, 1970
Length 5.4mm
Kermadec Trench, 8210-8300 metres [K.AE.]
 

Genus: Parayoldiella

 
Length 8.2mm, Height 5.1mm
Kermadec Trench off northern NZ, deep water [K.E.]