NZ Mollusca

Cominella (Cominista) glandiformis (Reeve, 1847)

Cominella glandiformis
Waipu, Northland, 25mm
Cominella glandiformis
(orange form) - Bay of Islands, on oysters, 22mm
Cominella glandiformis
Common on mud and sandy flats in sheltered waters
Cominella glandiformis
A group devouring a dead bivalve. Parengarenga Harbour, Far North
Classification: Mollusca - Gastropoda - Caenogastropoda - Neogastropoda - Buccinulidae - Cominella (Cominista)
Size/Grows to: Height 24mm, Width 13mm
Distribution: North, South, Stewart and Chatham Islands [A.C.F.M.]
Notes: Mud Whelk. Endemic
Some known Localities
  • Parengarenga Harbour, Far North, NZ
  • Bay of Islands, Northland, NZ
  • Tamaki Estuary, Auckland, NZ
  • Kawhia Harbour, Waikato, NZ
  • Pauatahanui Inlet, Porirua Harbour, Wellington, NZ *2
  • Chatham Islands, NZ
  • Stewart Island, NZ
  • Morley, M.S. Oct/2013: In a Whorl with Cominella glandiformis, Poirieria, 37 (p.4)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.193)
  • Bimler, A. 1976: Effects of overcrowding on floating behaviour in the mud whelk Cominella glandiformis (Mollusca: Gastropoda), New Zealand Journal of Marine and Freshwater Research, 10(4) (p.715)

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