NZ Mollusca

Cantharidus dilatatus (G.B.Sowerby II, 1870)

Cantharidus dilatatus
Taupiri Bay, Northland, in beach drift, 9mm
Classification: Gastropoda - Vetigastropoda
Synonyms: (=Mawhero Marshall, =Micrelenchus Finlay, =Plumbelenchus Finlay)
Size/Grows to: Height 8mm, Width 8mm
Distribution: North, South, Stewart and Chatham Islands. On kelp at low tide to about 5 metres [A.C.F.M.]
Notes: Endemic
Some known Localities
  • E side of North Cape, Far North, NZ
  • Matai Bay, Karikari Peninsula, Northland, NZ
  • Entrance to Kaimaumau Harbour, Rangaunu Bay, Northland, NZ *2
  • Berghens Point, Doubtless Bay, Northland, NZ *2
  • Tauranga Bay, Whangaroa, Northland, NZ
  • Cavalli Islands, Whangaroa, Northland, NZ
  • Tapeka Point, Bay of Islands, Northland, NZ
  • Russell, Bay of Islands, Northland, NZ, (holotype)
  • Taupiri Bay, Northland, NZ
  • Bland Bay, Northland, NZ
  • Henry Island, Whangaruru, Northland, NZ *2
  • Tutukaka Harbour, Whangarei, Northland, NZ
  • Tutukaka Harbour, Whangarei, Northland, NZ
  • Smuggler's Bay, Whangarei Heads, Northland, NZ
  • Off Te Hue Point, Little Barrier Island, Hauraki Gulf, NZ *2
  • Jackson Bay, Cape Colville, Hauraki Gulf, NZ *2
  • Waiti Bay, Waiheke Island, Auckland, NZ
  • Rangitoto Reef, Auckland, NZ
  • Takapuna Beach, Auckland, NZ
  • Motuihe Island, Hauraki Gulf, NZ *2
  • Near Purangi River mouth, Cooks Bay, Whitianga, Coromandel, NZ *2
  • Whangamata, Coromandel, NZ
  • Off White Island, 73-59 metres, Bay of Plenty, NZ
  • Lottin Point, East Cape, NZ
  • Waihau Bay, East Cape, NZ
  • North Rock, Mount Maunganui, Bay of Plenty, NZ
  • Omaio Bay, Te Kaha, Bay of Plenty, NZ
  • Boulder Bay, Moutohora (Whale) Island, Bay of Plenty, NZ *2
  • Otarawairere Bay, Ohope, Bay of Plenty, NZ *2
  • Mahia Peninsula, Hawkes Bay, NZ
  • Auroa Point, Mahia Peninsula, Hawkes Bay, NZ
  • Between Mahia & Auroa Point, Mahia Peninsula, Hawkes Bay, NZ *2
  • Kapiti Island, NZ
  • Castlepoint, Wairarapa, NZ
  • S of Turner's Bay, Admiralty Bay, Marlborough Sounds, NZ *2
  • Waitui Bay, 15 metres, Pelorus Sound, Marlborough Sounds, NZ
  • Karehana Bay, Plimmerton, Wellington, NZ *2
  • Titahi Bay, Porirua, Wellington, NZ
  • Brothers Island, Cook Strait, NZ *2
  • Cable Bay, NE of Nelson, NZ
  • Breaker Bay, Wellington, NZ
  • Lyall Bay, Wellington, NZ *2
  • Island Bay, Wellington, NZ
  • Red Rocks, Wellington, NZ
  • Wairepo flat, Kaikoura Peninsula, Canterbury, NZ
  • Observation Point, Kaikoura, Canterbury, NZ *2
  • Point Kean, Kaikoura, Canterbury, NZ
  • South Bay, Kaikoura Peninsula, Canterbury, NZ
  • E of Purau Bay, Lyttelton Harbour, Canterbury, NZ *2
  • Kaingaroa Beach, Chatham Islands, NZ
  • Ellice Point, NW of Waitangi, Chatham Islands, NZ *2
  • Owenga, Chatham Islands, NZ
  • Cape Wanbrow, Oamaru, Otago, NZ
  • Doubtful Sound, Off Shelter Island No. 2, 27 metres, Fiordland, NZ *2
  • Sunday Cove, Breaksea Sound, Fiordland, NZ
  • Off Long Island, Dusky Sound, 44 metres, Fiordland, NZ *2
  • Portobello Marine Station, Otago Harbour, NZ
  • Waipapa Point, Southland, NZ
  • Horseshoe Bay, Paterson Inlet, Stewart Island, NZ
  • Halfmoon Bay, Stewart Island, NZ
  • Mason Bay, Stewart Island, NZ
  • Port Adventure, Stewart Island, NZ
  • Easy Harbour, Stewart Island, NZ
  • North Arm, 37-46 metres, Port Pegasus, Stewart Island, NZ *2
more localities
  • Marshall, B.A. 1998: The New Zealand Recent species of Cantharidus Montfort, 1810 and Micrelenchus Finlay, 1926 (Mollusca: Gastropoda: Trochidae), Molluscan Research, 19 (p.132)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.56)

Note: Localities are approximate, and represent only some of the known localities for the species.

*2 © Museum of New Zealand Te Papa Tongarewa CC BY-NC-ND