Cassidae: Semicassis (Antephalium) semigranosa (Lamarck, 1822) (‘half-grained helmet’)

Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Littorinimorpha
Superfamily: Tonnoidea
Family: Cassidae
Subfamily: Cassinae
Genus: Semicassis

Bangor: Two Mile Beach
Bangor: Watsons Bay
Bay of Fires: Break Yoke Beach to Pebbly Beach
Beaumaris: Shelly Point
Bellingham
Bicheno: Courland Bay
Bicheno: Diamond Island
Bicheno: Redbill Beach
Binalong Bay: beach
Binalong Bay: gulches
Blackman Bay: Little Chinaman Bay
Blackmans Bay
Black River Beach
Black River Beach: northern end
Black River Beach: southern end
Boat Harbour
Boat Harbour: beach
Boltons Beach
Bridport: beach
Bridport (unlocalised)
Bruny Island: E coast (unlocalised)
Bruny Island: Neck Beach
Bruny Island (unlocalised)
Burnie: Blythe Heads & estuary
Calverts Beach & Goats Bluff
Cape Portland: Lanoma Point
Cape Portland: Lemons Beach
Cape Portland: Petal Point
Carlton Beach: Spectacle Island
Carlton: Park Beach
Clayton: foreshore
Clifton Beach: western end
Cox Bight (unlocalised)
Cremorne: foreshore
Croppies Beach: northern end
Davey River: Carvers Point
Denison Beach: Porch Rocks
Denison Beach (unlocalised)
Devonport: Bluff Beach
Devonport: Coles Beach
Devonport: Mersey River
Devonport: Paradise Cove (unlocalised)
Devonport (unlocalised)
Dianas Beach (unlocalised)
Dover: Roaring Bay Beach
Eaglehawk Neck: eastern side
Earlham: foreshore
East Devonport: beach & breakwater
East Devonport: Moorland Beach
East Devonport: Moorland Point
East Devonport: Pardoe Beach: The Water Rat
Eastern Frederick Henry Bay: ACMA Asterias survey Stn 16
East Ulverstone
East Ulverstone: Buttons Beach
E coast of Tasmania (unlocalised)
Flinders Island: Fotheringate Bay
Flinders Island: Fotheringate Beach: southern end
Flinders Island: Killiecrankie: foreshore
Flinders Island: Northeast River: mouth
Flinders Island: Palana Beach
Flinders Island: Patriarch Beach
Frederick Henry Bay: Sloping Island
Freycinet Peninsula: Cooks Beach
Freycinet Peninsula: Hazards Beach
Freycinet Peninsula: The Hazards
Freycinet Peninsula (unlocalised)
Freycinet Peninsula: Wineglass Bay
Friendly Beaches
Georges Bay: Blanche Point
Goat Island: foreshore of island and nearby mainland
Great Musselroe Bay
Great Oyster Bay
Greens Beach: main beach
Greens Beach: Nudists Beach
Hawley Beach: foreshore towards Point Sorell
Hellyer Beach
Hunter Island: Cave Bay
Ida Bay (unlocalised)
King Island: Colliers Beach
King Island: Lavinia Beach: beach nr Lake Martha Lavinia
King Island: Naracoopa: foreshore
King Island: Sea Elephant Bay: Cowper Point
King Island (unlocalised)
King Island: Yellow Rock Beach
Kingston Beach
Lauderdale: Bambra Reef
Lauderdale: Roches Beach
Lauderdale: Seven Mile Beach
Leith: foreshore
Leith: Lillico Beach
Little Peggs Beach
Louisa Bay
Low Head (unlocalised)
Maria Island: Bloodstone Beach
Maria Island: Darlington Bay
Maria Island: Four Mile Beach
Maria Island: Gulls Nest Point
Maria Island: Hopground Beach
Maria Island: Howells Point & Painted Cliffs
Maria Island: Return Point
Maria Island: Riedlé Bay: McRaes Isthmus
Maria Island: Shoal Bay: McRaes Isthmus
Maria Island: Trigonia Corner
Marion Bay: Bream Creek foreshore
Marion Bay: northern beaches
Marion Bay (unlocalised)
Mayfield Beach to Mayfield Point
Mayfield Point to Little Christmas Island
Mercury Passage: Darlington Bay
Narawntapu: Badger Beach
Narawntapu: Badger Head
Narawntapu: Bakers Beach
Narawntapu: Griffiths Point
Narawntapu: Little Badger Head
New Harbour
Nine Mile Beach & Dolphin Sands
North Bruny Island: Bull Bay
North Bruny Island: Great Bay: Smoothys Point
North Bruny Island: Miles Beach
North Bruny Island: Nebraska Beach
North Bruny Island (unlocalised)
North coast of Tasmania (unlocalised)
Northdown Beach
Nubeena: Roaring Beach
Nubeena: White Beach
Orford: East Shelly Beach
Orford: Spring Beach
Orford (unlocalised)
Peggs Beach: eastern end
Peggs Beach (unlocalised)
Peggs Beach: western end
Penguin: Lonah & Lodders Point
Pipers Head
Pirates Bay (unlocalised)
Planters Beach to Fishers Point
Point Sorell and foreshore to SW
Point Sorell: Margaret Rocks
Port Davey: Bond Bay
Port Davey: Spain Bay
Port Latta: Cowrie Point
Port Sorell (unlocalised)
Primrose Beach to Carlton Bluff
Primrose Sands
Randalls Bay
Ransons Beach
Rheban Beach
Robbins Island: Ransonnet Bay
Rocky Cape: Burgess Cove
Rocky Cape: Castle Rock Bay
Rocky Cape: foreshore N of Picnic Beach
Rocky Cape: Forwards Beach
Rocky Cape: Mary Anne Cove area
Rocky Cape: Picnic Beach & rocks to S
Rocky Cape (unlocalised)
Schouten Island: Moreys Bay
Schouten Island: Sandspit Point
Shearwater: Freers Beach
Sisters Beach
Sloping Main Beach
Somerset: foreshore
South Arm: Fort Beach
South Arm: Hope Beach: southern end
South Bruny Island: Adventure Bay: Two Tree Point
South Bruny Island: Butlers Beach
South Bruny Island: Cloudy Beaches: eastern beach
South Bruny Island: Cloudy Beaches: western beach
South Bruny Island: Hopwood Beach
South Croppies Point
Southport
Southport Bluff: beach
Southport: Roaring Beach
Stanley: Anthony Beach
Stanley: Circular Head
Stanley: East Inlet
Stanley: foreshore
Stanley: Godfreys Beach
Stanley: Green Hills: West Inlet entrance
Stanley: Tatlows Beach
Stanley (unlocalised)
Stanley: West Inlet
Swansea: Coswell Beach
Swansea: Cressy Beach
Swansea: Jubilee Beach
Swansea: Kelvedon Beach
Swansea: Kelvedon Beach: Shelly Point
Swansea: Kennedia Beach
Swansea: Lisdillon Beach
Swansea: Meredith River: mouth
Swansea: Spiky Beach
Swansea (unlocalised)
Swanwick: foreshore
Tamar River: Kelso: foreshore
Taroona: Alum Cliffs
Taroona Beach
Taroona: Dixons Beach
Taroona: Hinsby Beach
Tasmania (unlocalised)
The Gardens: Cosy Corner
The Gardens: Seatons Cove
The Gardens: Swimcart Beach
The Gardens: Taylors Beach
Three Hummock Island: East Telegraph Beach
Three Hummock Island: Sandy Spit
Three Hummock Island: West Telegraph Beach
Trial Harbour
Trial Harbour area
Turners Beach
Verona Sands
Walker Island
Waterhouse Island
West Ulverstone: foreshore