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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
E =
Endemic
I =
Introduced
Bivalvia - Autobranchia - Arcoida - Family: Phylobryidae

Phylobryidae

 

Genus: Adacnarca

 
Adacnarca harrisonae (Powell, 1927)
Length 1.5mm, Height 1.1mm, Endemic
South Island. South West Otago to Stewart Island [FAnE.]
 
Adacnarca ornata (Crozier, 1966)
Length 1.8mm, Height 2mm, Endemic
North of Three Kings Island, trawled in 800 metres [AE.]
 
Adacnarca pileopsis (Powell, 1927)
Length 1.3mm, Height 0.8mm, Endemic
South Island. Off South West Otago 310 metres [FE.]
 
Adacnarca trapezina (Bernard, 1897)
Length 1.5mm, Height 1.1mm, Endemic
North Island, Wellington area. South, Stewart Island and Bounty Islands [CFAnE.]
 

Genus: Aupouria

 
Aupouria parvula Powell, 1937
Width 1.6mm, Height 1.5mm, Endemic
Off Three Kings Islands. Trawled in about 260 metres [AE.]
 

Genus: Cosa

 
Cosa costata (Bernard, 1896)
Width 2.5mm, Height 3.2mm, Endemic
Throughout southern NZ and islands. Shallow water to about 180 metres [CFMAnE.]
 
Cosa dispar Powell, 1937
Endemic
Off Three Kings Islands, trawled [AE.]
 
Cosa filholi (Bernard, 1897)
Width 2.5mm, Height 3.2mm, Endemic
Cook Strait, South, Stewart and Chatham Islands [CFMAnE.]
 
Cosa laevicostata Powell, 1933
Width 1.8mm, Height 2.3mm, Endemic
Far North, in shell sand [AE.]
 
Cosa serratocostata Powell, 1933
Width 2.3mm, Height 2.8mm, Endemic
Off Three Kings Islands, 475 metres. Far North and Northland, in shell sand [AE.]
 

Genus: Cratis

 
Cratis delicatula Powell, 1937
Width 2.4mm, Height 3mm, Endemic
Off Three Kings Islands to East Cape, and Kermadec Ridge [AE.]
 
Cratis retiaria Powell, 1937
Width 2.5mm, Height 3mm, Endemic
Off Three Kings Islands, trawled in 260 metres [AE.]
 

Genus: Lissarca

 
Lissarca aucklandica E.A.Smith, 1902
Length 5mm, Height 3.8mm, Endemic
Auckland and Campbell Islands [AnE.]
 
Lissarca benthicola (Dell, 1956)
Length 4.8mm, Height 6.7mm, Endemic
South Island. Off eastern Otago, 475-640 metres [FE.]
Lissarca exilis Suter, 1913
Length 3.2mm, Height 2.2mm, Endemic
Off Stewart and Snares Islands [FAnE.]
 
Lissarca pisum Suter, 1913
Length 3.5mm, Height 2.8mm, Endemic
Off Bounty and Antipodes Islands, from low tide to 90 metres [AnE.]
 
Lissarca stationis Fleming, 1948
Length 1.6mm, Height 1.3mm, Endemic
South Island. Fiordland [FE.]
 
Lissarca stewartiana Powell, 1935
Length 2.1mm, Height 1.5mm, Endemic
Stewart Island, in shell sand [FE.]
 

Genus: Philobrya

 
Philobrya acutangula (Powell, 1935)
Width 2.8mm, Height 3.2mm, Endemic
Three Kings Islands. Northland to Mahia [ACE.]
 
Philobrya hamiltoni (Hedley, 1916)
Width 4.5mm, Height 6mm, Endemic
Macquarie Island, below low tide [AnE.]
 
Philobrya meleagrina (Bernard, 1896)
Width 2.5mm, Height 2.5mm, Endemic
Southern part of South Island, Stewart, Snares and Chatham Islands [FME.]
 
Philobrya modiolus Suter, 1913
Width 3mm, Height 3mm, Endemic
Chatham, Bounty, Snares and Antipodes Islands. Below low tide to about 90 metres [MAnE.]
 
Philobrya munita (Finlay, 1930)
Width 3.2mm, Height 4.2mm, Endemic
Northland to East Cape and Mahia. Under stones at low tide [ACE.]
 
Philobrya pinctada (Finlay, 1930)
Width 4.2mm, Height 5.6mm, Endemic
North and South Islands. Off Three Kings Islands to Otago [ACFE.]
 
Width 4.4mm, Height 6mm, Endemic
Off eastern Otago and Chatham Islands [FME.]

Genus: Verticipronus

 
Verticipronus mytilus Hedley, 1904
Width 3.5mm, Height 5.5mm, Endemic
Lower North Island and South Island. Stewart, Chathams, Snares, Bounty, Antipodes and Auckland Islands [CFMAnE.]