Quick Search
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 =
N =
North Island
S =
South Island
E =
I =
Bivalvia - Autobranchia - Arcoida - Family: Phylobryidae



Genus: Adacnarca

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

Genus: Aupouria

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

Genus: Cosa

Cosa costata (Bernard, 1896)
Width 2.5mm, Height 3.2mm
Throughout southern NZ and islands. Shallow water to about 180 metres [CFMAnE.]
Cosa dispar Powell, 1937
Off Three Kings Islands, trawled [AE.]
Cosa filholi (Bernard, 1897)
Width 2.5mm, Height 3.2mm
Cook Strait, South, Stewart and Chatham Islands [CFMAnE.]
Cosa laevicostata Powell, 1933
Width 1.8mm, Height 2.3mm
Far North, in shell sand [AE.]
Cosa serratocostata Powell, 1933
Width 2.3mm, Height 2.8mm
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
Off Three Kings Islands to East Cape, and Kermadec Ridge [AE.]
Cratis retiaria Powell, 1937
Width 2.5mm, Height 3mm
Off Three Kings Islands, trawled in 260 metres [AE.]

Genus: Lissarca

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

Genus: Philobrya

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

Genus: Verticipronus

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