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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
Gastropoda - Caenogastropoda - Hypsogastropoda - Family: Rissoidae

Rissoidae: Rissoinae

 

Genus: Alvania

 
Alvania kermadecensis (Oliver, 1915)
Kermadec Islands [K.E.]
 

Genus: Alvania (Linemera)

 
Height 2mm, Width 1.4mm
Taiaroa Canyon, off Otago Peninsula, 550 metres [FE.]
Height 2.05mm, Width 1.25mm
Off Three Kings Islands [AE.]
 
Height 2.15mm, Width 1.2mm
Off Bounty Islands [AnE.]
Height 2.6mm, Width 1.6mm
Off Otago Heads. Off Snares, Auckland and Campbell Islands [FAnE.]
 
Height 3.5mm, Width 1.7mm
Off Northland offshore Islands [AE.]
 
Height 3.0, mm, Width 1.6mm
Off Oamaru [FE.]
 
Height 1.8mm, Width 1.05mm
Off Chatham and Bounty Islands [MAnE.]
 
Alvania (Linemera) pingue (Webster, 1906)
Height 2mm, Width 1.25mm
Northland. Off Great Barrier Island, 200 metres [AE.]
 
Height 2.3mm, Width 1.3mm
Off Three Kings Islands to Northland [AE.]
 
Height 2.4mm, Width 1.3mm
Off Chatham Islands, trawled in approximately 240 metres [ME.]
Height 3.0mm, Width 1.5mm
Off Lyttelton and off Chatham Rise [CME.]
 

Genus: Attenuata

 
Attenuata affinis (Powell, 1940)
Height 2.05mm, Width 1.09mm
Off North Cape [AE.]
 
Height 2.2mm, Width 1.1mm
Off Chatham Islands [ME.]
Attenuata bollonsi (Powell, 1930)
Height 2.5mm, Width 1.3mm
Off Three Kings Islands to Northland [AE.]
 
Attenuata cochlearella (Powell, 1937)
Height 1.9mm, Width 0.9mm
Off Three Kings Islands and Northland [AE.]
 
Attenuata contigua (Powell, 1940)
Height 1.58mm, Width 0.7mm
Off Three Kings Islands [AE.]
 
Attenuata finlayi (Powell, 1930)
Height 2.2mm, Width 1.05mm
Northland to Mahia [ACE.]
 
Attenuata hinemoa (Fleming, 1948)
Height 2.2mm, Width 1.0mm
Southland [FE.]
 
Attenuata manawatawhia (Powell, 1937)
Height 2.1mm, Width 1.25mm
Off Three Kings Islands [AE.]
 
Attenuata merelina (Dell, 1956)
Height 2.7mm, Width 1.6mm
Off eastern Otago [FE.]
 
Attenuata regis (Powell, 1940)
Height 2.5mm, Width 1.0mm
Northland. From Bay of Islands to Three Kings Islands [AE.]
 

Genus: Manzonia (Simulamerelina)

 
Height 2.9mm, Width 1.25mm
Northland east coast [AE.]
 
Kermadec Islands [K.]
 

Genus: Merelina

 
Merelina cochleata Powell, 1937
Height 1.6mm, Width 0.87mm
Off Three Kings Islands [AE.]
 
Merelina compacta Powell, 1927
Height 1.35mm, Width 0.65mm
Off Northland [AE.]
 
Merelina coronata (Powell, 1926)
Height 3.0mm, Width 1.5mm
Off Three Kings Islands to Northland and W Bay of Plenty [AE.]
Merelina crassissima Powell, 1937
Height 1.5mm, Width 1.0mm
Off Three Kings Islands [AE.]
 
Merelina crispulata Powell, 1937
Height 1.65mm, Width 0.9mm
Off Three Kings Islands [AE.]
 
Merelina crosseaformis (Powell, 1926)
Height 3.0mm, Width 1.25mm
Northland to East Cape [AE.]
 
Merelina foliata (Suter, 1908)
Height 2.0mm, Width 0.8mm
Off Fiordland, Stewart Island, Snares, Chatham and Antipodes Islands [FMAnE.]
 
Merelina harrisonae Powell, 1939
Height 3.4mm, Width 1.55mm
Mahia Peninsula to Stewart Island [CFE.]
 
Merelina lacunosa (Powell, 1940)
Height 2.2mm, Width 1.0mm
Northland [AE.]
 
Merelina lyalliana (Suter, 1898)
Height 2.9mm, Width 1.1mm
North and upper South Island [ACE.]
 
Merelina manawatawhia Powell, 1937
Height 1.75mm, Width 0.98mm
Off Three Kings Islands [AE.]
 
Merelina maoriana Powell, 1939
Height 3.0mm, Width 1.3mm
North, South and Chatham Islands [ACFME.]
Merelina paupereques Powell, 1937
Height 2.1mm, Width 1.4mm
Off Three Kings Islands and Poor Knights Islands [AE.]
 
Merelina plaga Finlay, 1927
Width 1.3mm, Height 3mm
Mahia and Southern Islands. Snares, Auckland, Campbell and Antipodes Islands [CAnE.]
 
Merelina rubiginosa Ponder, 1967
Height 2.16mm, Width 1.0mm
Northland [AE.]
 
Merelina superba Powell, 1927
Height 3.6mm, Width 1.4mm
Northland to Bay of Plenty [AE.]
 
Merelina taupoensis Powell, 1939
Height 2.8mm, Width 1.2mm
Northland to Mania Peninsula [ACE.]
 
Merelina tricarinata (Powell, 1937)
Height 1.4mm, Width 0.8mm
Off Three Kings Islands [AE.]
 
Height 4.4mm, Width 1.7mm
Chatham Islands [ME.]
 

Genus: Onoba

 
Onoba alpha (Powell, 1955)
Height 1.9mm, Width 1.17mm
Off Snares and Antipodes Islands [FAnE.]
 
Onoba aupouria (Powell, 1940)
Height 1.25mm, Width 1.75mm
Between Spirits Bay and Three Kings Islands [AE.]
 
Onoba beta (Powell, 1955)
Height 2.0mm, Width 1.16mm
Off Snares Islands [FE.]
 
Onoba candidissima (Webster, 1905)
Height 2.0mm, Width 1.0mm
Northland to Mahia [ACE.]
 
Onoba delicatula (Powell, 1933)
Height 1.9mm, Width 1mm
Auckland Islands. In beach drift and dredged to over 25 metres [AnE.]
 
Onoba delta (Powell, 1955)
Height 3.05mm, Width 1.8mm
Off Snares Islands [AnE.]
 
Onoba edita (Powell, 1939)
Height 3.0mm, Width 1.3mm
Stewart Island and Fiordland [FE.]
 
Onoba fallai (Powell, 1955)
Height 2.25mm, Width 1.1mm
Auckland, Campbell and Antipodes Islands [AnE.]
 
Onoba foveauxiana (Suter, 1898)
Height 2.5mm, Width 1.5mm
Otago and Stewart Island [FAnE.]
 
Onoba fumata (Suter, 1898)
Height 2.0mm, Width 1.0mm
North, South, Chathams and Auckland Islands [ACFMAnE.]
 
Onoba gamma (Powell, 1955)
Height 2.6mm, Width 1.5mm
Off Snares Islands [FAnE.]
 
Onoba inornata (Powell, 1933)
Height 1.92mm, Width 0.9mm
Wellington, South Island, Snares and Chatham Islands [CFMAnE.]
 
Onoba insculpta (Murdoch, 1905)
Height 2.5mm, Width 1.3mm
Wellington, Foveaux Strait, Stewart Island, Snares, Auckland and Bounty Islands [CFAnE.]
 
Onoba iredalei (Powell, 1937)
Height 2.0mm, Width 1.5mm
Off Three Kings Islands [AE.]
 
Onoba kermadecensis (Powell, 1927)
Kermadec Islands [K.E.]
 
Onoba morioria Powell, 1933
Height 1.9mm, Width 1.0mm
Chatham Islands [ME.]
 
Onoba obliquata (Powell, 1940)
Height 1.4mm, Width 0.6mm
Far North [AE.]
 
Onoba oliveri (Powell, 1955)
Height 2.4mm, Width 1.65mm
Campbell Islands [AnE.]
 
Onoba parvula (Powell, 1931)
Height 1.3mm, Width 0.59mm
Off Awanui Heads, Northland [AE.]
 
Onoba paucicostata (Powell, 1931)
Height 2.06mm, Width 1.16mm
Off Bounty Islands [AnE.]
 
Onoba sorenseni (Powell, 1955)
Height 2.5mm, Width 1.5mm
Campbell, Auckland and Antipodes Islands [AnE.]
 
Onoba tenuistriata (Powell, 1933)
Height 2.0mm, Width 1.25mm
Off Auckland Islands [AnE.]
 

Genus: Onoba (Manawatawhia)

 
Height 1.8 mm, Width 0.7mm
Off Three Kings Islands [AE.]
 

Genus: Onoba (Ovirissoa)

 
Onoba (Ovirissoa) delli (Ponder, 1968)
Height 1.8mm, Width 0.9mm
Lower North Island. In shell sand [CE.]
 
Height 2.85mm, Width 1.7mm
Off Three Kings Islands [AE.]
 
Height 3.1mm, Width 2.15mm
Northland [AE.]
 
Onoba (Ovirissoa) exuta (Powell, 1937)
Height 2.65mm, Width 1.6mm
Off Three Kings Islands [AE.]
 
Height 2.2mm, Width 1.0mm
South of South Island and Stewart Island [FMAnE.]
 
Height 2.4mm, Width 1.4mm
Off Poor Knights Islands and Northland [AE.]
 
Height 2.0mm, Width 0.9mm
Off Puysegur Point, Fiordland [FE.]
 

Genus: Powellisetia

 
Powellisetia australis (Watson, 1886) (=Ovirissa nivosa of authors not Powell)
Height 2.5mm, Width 1.45mm
Sub-Antarctic Islands, deep [An]
 
Powellisetia bilirata Ponder, 1965
Height 1.05mm, Width 0.675mm
Northland [AE.]
 
Powellisetia cf. deserta (E.A.Smith, 1907) (=Eatoniella kerguelensis Tomlin)
Macquarie Island. Sub-Antarctic Islands, deep [AnE.]
 
Height 1.29mm, Width 1.09mm
Northland [AE.]
 
Powellisetia gradata (Suter, 1908)
Height 1.65mm, Width 1.1mm
Off Otago, Stewart, Snares and Bounty Islands [FAnE.]
 
Powellisetia lineata (Smith, 1962)
Height 1.41mm, Width 0.96mm
Stewart Island. Low tide [FE.]
 
Powellisetia microstriata (Murdoch, 1905)
Height 2.07mm, Width 1.11mm
Deep water off South Island, Snares and Bounty Islands [FAnE.]
 
Height 1.8mm, Width 1.3mm
Off south of the South Island and Snares Islands [FAnE.]
 
Height 1.35mm, Width 0.88mm
Off Three Kings Islands to Mayor Island, Bay of Plenty [AE.]
 
Powellisetia retusa (Powell, 1927)
Height 1.8mm, Width 1.0mm
South of South Island, Stewart, Snares, Auckland, Bounty and Chatham Islands [FMAnE.]
 
Powellisetia subgradata (Powell, 1937)
Height 1.7mm, Width 1.1mm
Off Three Kings Islands to Mayor Island, Bay of Plenty [AE.]
 
Powellisetia subtenuis (Powell, 1937)
Height 1.2mm, Width 0.8mm
Throughout NZ [ACFMAnE.]
 
Height 1.25mm, Width 0.75mm
South of South Island. Stewart and Bounty Islands [FAnE.]
 
Powellisetia unicarinata (Powell, 1930)
Height 1.19mm, Width 0.59mm
Northland to Bay of Plenty [AE.]
 

Genus: Pusillina (Haurakia)

 
Height 1.9mm, Width 1.25mm
Off Three Kings Islands [AE.]
 
Height 2.45mm, Width 1.55mm
Off Stewart Island, Snares and Auckland Islands [FAnE.]
 
Height 2.9mm, Width 1.6mm
Off Three Kings Islands [AE.]
 
Height 2.5mm, Width 1.5mm
Throughout NZ and Chatham Islands [ACFME.]
 
Height 2.5mm, Width 1.25mm
Southern part of South Island, Stewart and Snares Islands [FAnE.]
 
Height 1.75mm, Width 1.1mm
Throughout NZ and Chatham Islands [ACFME.]
 
Height 1.8mm, Width 1.2mm
Northland to Mayor Island, Bay of Plenty [AE.]
 
Height 2.05mm, Width 1.34mm
Off Auckland Islands [FAnE.]
 
Height 1.59mm, Width 0.92mm
Northland to Cape Kidnappers [ACE.]
 
Height 2.6mm, Width 1.8mm
Taiaroa Canyon, off Otago Peninsula [FE.]
 
Height 1.6mm, Width 1.1mm
Off Three Kings Islands [AE.]
 
Pusillina (Haurakia) semireticulata (Murdoch & Suter, 1906)
Height 3.3mm, Width 1.7mm
Off Northland to Bay of Plenty [AE.]
 
Height 1.0mm, Width 0.6mm
Far North [AE.]
 
Height 2.3mm, Width 1.4mm
Off Eastern Otago [FE.]
 
Kermadec Islands [K.E.]
 

Genus: Rissoa

 
Rissoa cylindrella Odhner, 1924
Height 2.5mm, Width 1.1mm
Far North [AE.]
 

Genus: Striatestea

 
Height 1.4mm, Width 0.6mm
South of Bounty Islands [AnE.]
 
Striatestea eulima Powell, 1940
Height 1.45mm, Width 0.5mm
Far North [AE.]
 
Striatestea poutama Ponder, 1967
Height 1.51mm, Width 0.63mm
Stewart Island. Poutama Island, South Cape [FE.]
 

Rissoidae: Lironobinae

 

Genus: Lironoba

 
Lironoba anomala Powell, 1940
Height 1.4mm, Width 0.9mm
Far North [AE.]
 
Lironoba elegans Smith, 1962
Height 1.66mm, Width 0.92mm
Stewart Island. Off Poutama Island, South Cape [FE.]
 
Lironoba matai Dell, 1952
Height 1.18mm, Width 0.72mm
Mernoo Bank, NE of Banks Peninsula [CE.]
 
Lironoba suteri (Hedley, 1904)
Height 1.8mm, Width 1.4mm
Foveaux Strait, Stewart Island, Snares and Auckland Island [FAnE.]