Species Images
Commonly found on mid-tidal rocks throughout the country. 31mm
Key to Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approxomation of the range of each species within New Zealand.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
FW =
L =
N =
North Island
S =
South Island
E =
I =

Nerita (Lisanerita) melanotragus E.A. Smith, 1884

Classification:Mollusca (Phylum) > Gastropoda (Class) > Neritimorpha (Subclass) > Cycloneritida (Order) > Neritoidea (Superfamily) > Neritidae (Family) > Nerita (Genus) > Lisanerita (Subgenus)
Size/Grows to:Width 35mm, Height 30mm
Synonyms:(=atramentosa of authors not Reeve)
Distribution:North Island, and northern part of South Island. Also Kermadec Islands, Tasmania and New South Wales to Western Australia. Common on mid-tidal rocks
Geographical Range:KAC
Black Nerita. Marine
References and Publications:
  • Morley, M.S. Oct/2013: The Egg Cases, Protoconchs and early whorls of Nerita melanotragus E.A Smith, 1884, Poirieria, 37 (p.30)
  • Spencer, H.G. Sep/2009: Name changes for some common intertidal snails, Poirieria, 34 (p.7)
  • Raven, J.L. May/1995: Occurrence of Nerita melanotragus round Wellington, Cookia, 7(2) (p.4)
  • Walsby, J.R., Morton, J.E. 1982: Chitons, Limpets & Topshells & Pulmonates (Amphineura, Archaeogastropoda & Pulmonata), Marine Molluscs, University of Auckland, Leigh Marine Laboratory, 1 (p.67)
  • Elliott, B.F. May/1980: Items of Interest: Nerita melanotragus, Poirieria, 10(5)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.80)

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