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Molluscs of Tasmania

Ranellidae – Cymatiinae: Sassia (Austrotriton) bassi (Angas, 1869) (‘Bassian rock-whelk’)

Synonym(s): bassi Angas, 1869.
Typical shell-length 35 mm. Lives subtidally amongst rocks and seaweed. Native. Endemic to southeastern Australia (TAS, VIC and SA). In Tasmanian waters, this species is frequent in the N and NE; rare or absent further S.


Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Superfamily: Tonnoidea
Family: Ranellidae
Subfamily: Cymatiinae
Genus: Sassia

Localities for Sassia bassi

Beechford: foreshore
Black River Beach: northern end
Black River Beach: southern end
Bridport: beach
Bridport: East Sandy Point
Burnie: Blythe Heads & estuary
Cape Portland: Lanoma Point
Cape Portland: Petal Point
Clarke Island: Black Point
Clayton: foreshore
Clifton Beach (unlocalised)
Coles Bay (unlocalised)
Croppies Beach: northern end
Denison Beach: Porch Rocks
Devonport: Bluff Beach
Douglas River: beach
Eaglehawk Neck: eastern side
East Devonport: Moorland Beach
East Devonport: Moorland Point
East Devonport: Pardoe Beach
East Devonport: Pardoe Point
East Ulverstone
East Ulverstone: Buttons Beach
Edgcumbe Beach
Flinders Island: Fotheringate Beach: southern end
Flinders Island: Northeast River: mouth
Flinders Island: Patriarch Beach
Flinders Island: Patriarch Inlet
Friendly Beaches
Georges Bay: St Helens (unlocalised)
Goat Island: foreshore of island and nearby mainland
Greens Beach: main beach
Hellyer Beach
King Island: City of Melbourne Bay
King Island: Lavinia Beach: beach nr Lake Martha Lavinia
King Island: Naracoopa: foreshore
King Island: Red Hut Point
King Island: Seal Bay: Black Point
King Island: Seal Point
King Island (unlocalised)
King Island: Yellow Rock Beach
Lauderdale: Roches Beach
Leith: foreshore
Leith: Lillico Beach
Little Musselroe Bay: Tree Point area
Little Peggs Beach
Low Head (unlocalised)
Maria Island: Trigonia Corner
Mayfield Beach to Mayfield Point
Mercury Passage: ACMA Asterias survey Stn 06
Narawntapu: Griffiths Point
North West coast of Tasmania (unlocalised)
Peggs Beach (unlocalised)
Peggs Beach: western end
Penguin: Lonah & Lodders Point
Pipers Head
Port Latta: Cowrie Point
Recherche Bay
Robbins Island: East Beach
Rocky Cape: Burgess Cove
Rocky Cape: Castle Rock Bay
Rocky Cape: foreshore N of Picnic Beach
Rocky Cape: Forwards Beach
Rocky Cape: Picnic Beach & rocks to S
Rocky Cape (unlocalised)
Shearwater: Freers Beach
Sisters Beach
Smithton: Duck Bay: Picnic Point
Somerset: foreshore
South Bruny Island: Mickeys Bay
Stanley: Anthony Beach
Stanley: foreshore
Stanley: Godfreys Beach
Stanley: Halfmoon Bay
Stanley: Tatlows Beach
Swansea: Spiky Beach
Tamar River: Kelso: foreshore
Tasmania (unlocalised)
The Gardens: Taylors Beach
Turners Beach
Waterhouse Island
West Ulverstone: Picnic Point: beach to W
Woolnorth: Woolnorth Point
Wynyard (unlocalised)

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