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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
R =
Recent
Sf =
Subfossil
Fo =
Fossil
Gastropoda (Phylum) > Mollusca (Subphylum) > Heterobranchia (Subclass) > Stylommatophora (Order) > Rhytidoidea (Superfamily) > Rhytididae (Family)
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Rhytididae
 
Genus: Amborhytidamap >
Amborhytida dunniae (Gray, 1840)
Length 30mm, Height 14mm, Land, North Island, Endemic
North Island. Auckland to Awanui L.N.E.
Amborhytida duplicata (Suter, 1904)
Length 26mm, Height 15mm, Land, North Island, Recent, Subfossil, Endemic. Subfossil and recent
North Cape block to Cape Maria van Diemen L.N.R.Sf.E.
Amborhytida forsythi (Powell, 1952)
Length 14mm, Height 7mm, Land, North Island, Endemic
North Island. Waipoua Forest, Kaitaia to Whangarei area L.N.E.
Amborhytida pycrofti (Powell, 1932)
Length 25mm, Height 12mm, Land, North Island, Endemic
Poor Knights Islands L.N.E.
Amborhytida tarangaensis (Powell, 1930)
Length 31mm, Height 19mm, Land, North Island, Endemic
Northland. Hen and Chickens Islands L.N.E.
Genus: Delosmap >
Delos coresia (Gray, 1850)
Length 4mm, Height 1.7mm, Land, North Island, Endemic
Northland to central North Island L.N.E.
Delos jeffreysiana (Pfeiffer, 1853)
Length 7mm, Height 3mm, Land, North Island, Endemic
Northland Peninsula and offshore Islands. Three Kings, Poor Knights, Great Barrier Island L.N.E.
Delos regia Climo, 1973
Length 4.2mm, Land, Endemic
Three Kings Islands L.E.
Delos striata Climo, 1973
Length 4mm, Height 1.5mm, Land, Endemic
Three Kings Islands L.E.
Genus: Delouagapiamap >
Delouagapia cordelia (Hutton, 1883)
Length 8mm, Height 4.5mm, Land, North Island, Endemic
Northland Peninsula L.N.E.
Delouagapia tasmani Goulstone & Brook, 1999
Height 7.7mm, Width 13mm, Land, Endemic
Three Kings Islands L.E.
Genus: Paryphantamap >
Paryphanta busbyi (Gray, 1840)
Length 79mm, Height 44mm, Kauri Snail Pupurangi. Land, North Island, Endemic
Northland Peninsula, Awanui to Warkworth L.N.E.
Paryphanta watti Powell, 1946
Length 62mm, Height 23mm, Kauri Snail Pupurangi. Land, North Island, Recent, Subfossil, Endemic
Far North. Cape Maria van Diemen to North Cape block L.N.R.Sf.E.
Genus: Powelliphantamap >
Powelliphanta annectens (Powell, 1936)
Length 69mm, Height 38mm, Kauri Snail. Land, South Island, Endemic
South Island. Karamea to Gunner Downs L.S.E.
Powelliphanta augusta Walker, Trewick & Barker, 2008
Length 44mm, Height 27mm, Kauri Snail. Land, South Island, Endemic
South Island. Mount Augustus ridgeline northeast of Westport L.S.E.
Length 32mm, Height 16mm, Kauri Snail. Land, South Island, Endemic
South Island. Fiordland L.S.E.
Powelliphanta fletcheri (Powell, 1938)
Length 36mm, Height 20mm, Kauri Snail. Land, South Island, Endemic
South Island. Mt.Tuhua, Westland L.S.E.
Powelliphanta gagei (Powell, 1938)
Length 42mm, Height 24mm, Kauri Snail. Land, South Island, Endemic
South Island. Greymouth L.S.E.
Powelliphanta gilliesi (E.A. Smith, 1880)
Length 48mm, Height 24mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 50mm, Height 28mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 56mm, Height 32mm, Kauri Snail. Land, South Island, Endemic
South Island. North-West Nelson L.S.E.
Length 48mm, Height 28mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 48mm, Height 25mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 45mm, Height 24mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 54mm, Height 27mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 52mm, Height 28mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 47mm, Height 25mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Powelliphanta hochstetteri (Pfeiffer, 1862)
Length 74mm, Height 35mm, Kauri Snail. Land, South Island, Endemic
South Island. West Nelson L.S.E.
Length 74mm, Height 35mm, Kauri Snail. Land, South Island, Endemic
South Island. Tasman Mountains, Nelson L.S.E.
Length 67mm, Height 32mm, Kauri Snail. Land, South Island, Endemic
South Island. Eastern Marlborough Sounds L.S.E.
Height 63mm, Width 30mm, Kauri Snail. Land, South Island, Endemic
South Island. Nelson L.S.E.
Length 70mm, Height 39mm, Kauri Snail. Land, South Island, Endemic
South Island. Western Marlborough Sounds L.S.E.
Powelliphanta lignaria (Hutton, 1888)
Length 65mm, Height 38mm, Kauri Snail. Land, South Island, Endemic
South Island. Mokihinui River L.S.E.
Length 45mm, Height 25mm, Kauri Snail. Land, South Island, Endemic
South Island. Mokihinui River area L.S.E.
Length 57mm, Height 35mm, Kauri Snail. Land, South Island, Endemic
South Island. Seddonville to Karamea, Northern Westland L.S.E.
Length 51mm, Height 42mm, Kauri Snail. Land, South Island, Endemic
South Island. Karamea, Northern Westland L.S.E.
Length 42mm, Height 28mm, Kauri Snail. Land, South Island, Endemic
South Island. Seddonville, Northern Westland L.S.E.
Length 47mm, Height 29mm, Kauri Snail. Land, South Island, Endemic
South Island. Seddonville, Northern Westland L.S.E.
Length 50mm, Height 29mm, Kauri Snail. Land, South Island, Endemic
South Island. Seddonville, Northern Westland L.S.E.
Powelliphanta marchanti (Powell, 1932)
Length 54mm, Height 30mm, Kauri Snail. Land, North Island, Endemic
North Island. Taihape to Taranaki, Ruahine Range, East Cape L.N.E.
Length 36mm, Height 21mm, Kauri Snail. Land, South Island, Endemic
South Island. Near Westport, Westland L.S.E.
Powelliphanta rossiana (Powell, 1930)
Length 38mm, Height 25mm, Kauri Snail. Land, South Island, Endemic
South Island. Ross, Westland L.S.E.
Powelliphanta spedeni (Powell, 1932)
Length 39mm, Height 25mm, Kauri Snail. Land, South Island, Endemic
South Island. Near Mataura River, Southland L.S.E.
Length 39mm, Height 25mm, Kauri Snail. Land, South Island, Endemic
South Island. Billow Mountains, Otago L.S.E.
Powelliphanta superba (Powell, 1930)
Length 80mm, Height 40mm, Kauri Snail. Land, South Island, Endemic
South Island. North West Nelson L.S.E.
Length 64mm, Height 31mm, Kauri Snail. Land, South Island, Endemic
South Island. Gouland Downs, North West Nelson L.S.E.
Length 61mm, Height 36mm, Kauri Snail. Land, South Island, Endemic
South Island. Gouland Downs, West Nelson L.S.E.
Length 90mm, Height 38mm, Kauri Snail. Land, South Island, Endemic
South Island. Near Kahurangi Point, West Nelson L.S.E.
Length 76mm, Height 36mm, Kauri Snail. Land, South Island, Endemic
South Island. Gouland Downs, North West Nelson L.S.E.
Powelliphanta traversi (Powell, 1930)
Length 54mm, Height 27mm, Kauri Snail. Land, North Island, Endemic
North Island. Horowhenua coastal plain to Manawatu River L.N.E.
Width 54mm, Height 27mm, Kauri Snail. Land, North Island, Endemic
Lower North Island. Horowhenua Plains L.N.E.
Width 53mm, Height 27mm, Kauri Snail. Land, North Island, Endemic
Lower North Island. Levin L.N.E.
Width 45mm, Height 26mm, Kauri Snail. Land, North Island, Endemic
Lower North Island. Tararua Ranges L.N.E.
Length 50mm, Height 26mm, Kauri Snail. Land, North Island, Endemic
North Island. Near Otaki L.N.E.
Width 53mm, Height 25mm, Kauri Snail. Land, North Island, Endemic
Lower North Island. Tararua Ranges and Shannon Heights L.N.E.
Genus: Prolesophantamap >
Width 3mm, Land, Endemic
North Island. Desert Road, Waiouru L.E.
Genus: Rhytidamap >
Rhytida australis Hutton, 1883
Length 13mm, Height 8mm, Land, South Island, Recent, Subfossil, Endemic
Stewart Island and nearby islands L.S.R.Sf.E.
Rhytida citrina Hutton, 1883
Length 22mm, Height 12mm, Land, South Island, Endemic
South Island. Greymouth L.S.E.
Rhytida greenwoodi (Gray, 1950)
Length 27mm, Height 17mm, Land, North Island, Endemic
North Island. Auckland, Waikato and Coromandel area L.N.E.
Length 26mm, Height 13mm, Land, South Island, Endemic
South Island. Takaka, Nelson L.S.E.
Rhytida meesoni Suter, 1891
Length 12mm, Height 6mm, Land, South Island, Endemic
South Island. Nelson to Marlborough L.S.E.
Rhytida oconnori Powell, 1946
Length 33mm, Height 19mm, Land, South Island, Endemic
South Island. North West Nelson L.S.E.
Rhytida otagoensis Powell, 1930
Length 18mm, Height 10mm, Land, South Island, Endemic
South Island. Southland L.S.E.
Rhytida patula Hutton, 1883
Length 28mm, Height 12mm, Land, South Island, Endemic
South Island. Greymouth to Karamea L.S.E.
Rhytida perampla (Powell, 1946)
Length 15mm, Height 8mm, Land, South Island, Endemic
South Island. Takaka to West Nelson, and down to Mokihinui River L.S.E.
Rhytida stephenensis Powell, 1930
Length 34mm, Height 19mm, Land, South Island, Endemic
Stephen Island, Cook Strait L.S.E.
Genus: Rhytidarexmap >
Rhytidarex buddlei (Powell, 1948)
Length 68mm, Height 29mm, Land, Endemic
Three Kings Islands L.E.
Rhytidarex johnsoni (Powell, 1948)
Length 22mm, Height 12mm, Land, Endemic
Three Kings Islands L.E.
Genus: Schizoglossamap >
Schizoglossa gigantea Powell, 1930
Length 32mm, Width 19mm, Height 6mm, Land, North Island, Subfossil, Endemic. Subfossil and recent. Similar shape to S.novoseelandica, but much larger
Gisborne, Hawkes Bay subfossil. Living in bush East Cape L.N.Sf.E.
Schizoglossa major Powell, 1938
Length 49mm, Width 35mm, Height 8mm, Land, North Island, Endemic. Subrecent. Larger than S.worthyae, and more roundly ovate
Waikato L.N.E.
Schizoglossa novoseelandica (Pfeiffer, 1862)
Length 20mm, Width 12mm, Height 6mm, Land, North Island, Endemic
North Island. Wanganui to Te Awamutu L.N.E.
Length 20mm, Width 13mm, Height 6mm, Land, North Island, Endemic
Great Barrier Island, Hauraki Gulf L.N.E.
Schizoglossa worthyae Powell, 1949
Length 32mm, Width 22mm, Height 7mm, Land, North Island, Endemic
North Island. Paeroa and south Auckland to Whangarei and Hokianga L.N.E.
Genus: Wainuiamap >
Wainuia clarki (Powell, 1936)
Length 26mm, Height 18mm, Land, North Island, Endemic
North Island. Lake Taupo L.N.E.
Wainuia edwardi (Suter, 1899) (=fallai Powell)
Length 37mm, Height 24mm, Land, South Island, Endemic
South Island. North Canterbury to Kaikoura L.S.E.
Wainuia nasuta (Powell, 1946)
Length 27mm, Height 17mm, Land, South Island, Endemic
D'Urville Island, Cook Strait L.S.E.
Wainuia urnula (Pfeiffer, 1855)
Length 28mm, Height 19mm, Land, North Island, Endemic
North Island. Wellington to Ruahine Range L.N.E.