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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: Littorinidae

Littorinidae: Littorininae

 

Genus: Austrolittorina

 
Austrolittorina antipodum (Philippi, 1847)
Height 19mm, Width 12mm, Blue Periwinkle
North, South, Stewart and Chatham Islands [K.ACFME.]
Austrolittorina cincta (Quoy & Gaimard, 1833)
Height 24mm, Width 13mm, Periwinkle
North, South, Stewart, Chatham, Snares and Auckland Islands [ACFMAnE.]

Genus: Echinolittorina (Granulilittorina)

 
Echinolittorina (Granulilittorina) cinerea (Pease, 1869) (=novaezelandiae Brook & B.Marshall not Reeve, =feejeensis Oliver not Reeve)
Kermadec Islands [K.]
 
Echinolittorina (Granulilittorina) feejeensis (Reeve, 1857) (=millegrana Brook & B.Marshall not Philippi)
Length 10mm
SE Asia, Fiji, Kermadec Islands [K.]
 

Littorinidae: Lacuninae

 

Genus: Risellopsis

 
Risellopsis varia (Hutton, 1873)
Width 8mm, Height 6mm
Throughout North, South, Stewart and Chatham Islands [ACFME.]
 

Littorinidae: Laevilitorininae

 

Genus: Laevilitorina

 
Laevilitorina antipodum (Filhol, 1880)
Height 4.5mm, Width 3mm
Campbell Islands [AnE.]
 
Height 5mm, Width 3.5mm
Antipodes Islands [AnE.]
 
Height 5.7mm, Width 3.1mm
Kerguelen and Macquarie Islands [AnE.]
 

Genus: Laevilitorina (Macquariella)

 
Height 1.4mm, Width 1.75mm
Stewart, Chatham and Auckland Islands [CAnE.]
 
Height 2.5mm, Width 2mm
Antipodes Islands [AnE.]
 
Height 3mm, Width 3mm
Macquarie Island [E.]
 
Height 3mm, Width 3mm
Macquarie Island [AnE.]
 

Genus: Laevilitorina (Rissolittorina)

 
Height 2.0mm, Width 1.2mm
Off Northland [AE.]