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.E.]
Some known Localities
  • E side of North Cape
  • Matai Bay, Karikari Peninsula, Northland
  • Entrance to Kaimaumau Harbour, Rangaunu Bay *2
  • Berghens Point, Doubtless Bay, Northland *2
  • Tauranga Bay, Whangaroa, Northland
  • Cavalli Islands, Whangaroa, Northland
  • Tapeka Point, Bay of Islands, Northland
  • Russell, Bay of Islands, Northland, (holotype)
  • Taupiri Bay, Northland
  • Bland Bay, Northland
  • Henry Island, Whangaruru *2
  • Tutukaka Harbour, Whangarei
  • Tutukaka Harbour, Whangarei
  • Smuggler's Bay, Whangarei Heads
  • Off Te Hue Point, Little Barrier Island, Hauraki Gulf *2
  • Jackson Bay, Cape Colville *2
  • Waiti Bay, Waiheke Island, Auckland
  • Rangitoto Reef, Auckland
  • Takapuna Beach, Auckland
  • Motuihe Island, Hauraki Gulf *2
  • Near Purangi River mouth, Cooks Bay, Whitianga *2
  • Whangamata, Coromandel
  • Off White Island, Bay of Plenty, 73-59 metres
  • Lottin Point, East Cape
  • Waihau Bay, East Cape
  • North Rock, Mount Maunganui
  • Omaio Bay, Te Kaha
  • Boulder Bay, Moutohora (Whale) Island, Bay of Plenty *2
  • Otarawairere Bay, Ohope *2
  • Mahia Peninsula, Hawkes Bay
  • Auroa Point, Mahia Peninsula, Hawkes Bay
  • Between Mahia & Auroa Point, Mahia Peninsula *2
  • Kapiti Island, Wellington
  • Castlepoint, Wairarapa
  • S of Turner's Bay, Admiralty Bay, Marlborough Sounds *2
  • Waitui Bay, Pelorus Sound, 15 metres
  • Karehana Bay, Plimmerton, N of Wellington *2
  • Titahi Bay, Porirua, Wellington
  • Brothers Island, Cook Strait *2
  • Cable Bay, NE of Nelson
  • Breaker Bay, Wellington
  • Lyall Bay, Wellington *2
  • Island Bay, Wellington
  • Red Rocks, Wellington
  • Wairepo flat, Kaikoura Peninsula
  • Observation Point, Kaikoura *2
  • Point Kean, Kaikoura
  • South Bay, Kaikoura Peninsula
  • E of Purau Bay, Lyttelton Harbour *2
  • Kaingaroa Beach, Chatham Islands
  • Ellice Point, NW of Waitangi, Chatham Islands *2
  • Owenga, Chatham Islands
  • Cape Wanbrow, Oamaru
  • Doubtful Sound, Off Shelter Island No. 2, 27 metres *2
  • Sunday Cove, Breaksea Sound, Fiordland
  • Off Long Island, Dusky Sound, Fiordland, 44 metres *2
  • Portobello, Marine Station, Otago Harbour
  • Waipapa Point, Southland
  • Horseshoe Bay, Paterson Inlet, Stewart Island
  • Halfmoon Bay, Stewart Island
  • Mason Bay, Stewart Island
  • Port Adventure, Stewart Island
  • Easy Harbour, Stewart Island
  • North Arm, Port Pegasus, Stewart Island, 37-46 metres *2
more localitiesspecies mapgenus map
References:
  • 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