Cantharidus antipodum (Hombron & Jacquinot, 1854)
Width 12mm, Height 10mm
Marine, Native - Endemic, Intertidal, under kelp holdfasts
Southern South Island as far north as Oamaru, and Stewart, Snares, Auckland, Campbell, Antipodes, Bounty and Chatham Islands, from 0-33m

Cantharidus capillaceus (Philippi, 1848)
Height 28mm, Width 20mm
Marine, Native - Non-endemic
Macquarie Island and southern New Zealand. Auckland, Campbell, Bounty and Antipodes Islands, from 0-26m

Cantharidus dilatatus (G.B. Sowerby II, 1870)
Height 9mm, Width 8mm
Marine, Native - Endemic, On kelp from low tide
North-eastern and south-western North Island, and South, Stewart and Chatham Islands, from 0-73m

Cantharidus festivus (B.A. Marshall, 1998)
Height 6.2mm
Marine, Native - Endemic
Three Kings Islands and off Cape Reinga, from 14-88m

Cantharidus fulminatus (Hutton, 1873)
Width 8mm, Height 8mm
Marine, Native - Endemic, Intertidal to shallow water
Chatham Islands, from 0-20m

Cantharidus opalus (Martyn, 1784)
Height 53mm, Width 39mm
Opal Top Shell, Marine, Native - Endemic, Littoral to moderate depths
Three Kings, North, South, Stewart, Snares and Chatham Islands, from 0-121m

Cantharidus puysegurensis (Powell, 1939)
Width 5.5mm, Height 5.0mm
Marine, Native - Endemic
South Island, from 0-48m

Cantharidus turneri (Powell, 1939)
Width 9mm, Height 8mm
Marine, Native - Endemic, On seaweed covered rocks
Southland, Stewart Island, Snares, Auckland and Campbell Islands, from 0m

Micrelenchus burchorum B.A. Marshall, 1998
Height 26mm, Width 16mm
Marine, Native - Endemic, On algae
King Bank and Three Kings Islands, from 6-805m

Micrelenchus huttonii (E.A. Smith, 1876)
Height 11.5mm
Marine, Native - Endemic, Inhabits sheltered waters, especially Zostera, sea-grass, on tidal flats and sheltered rock pools
North, South and Stewart Islands, from 0-13m

Micrelenchus purpureus (Gmelin, 1791)
Height 35mm, Width 21mm
Marine, Native - Endemic, On seaweed from low tide
North Island, and South Island as far south as Dunedin, from 0-121m

Micrelenchus sanguineus (Gray, 1843)
Height 8mm, Width 7mm
Marine, Native - Endemic, Intertidal
North, South and Stewart Island, from 0-13m

Micrelenchus tenebrosus A. Adams, 1853
Height 11mm, Width 10mm
Marine, Native - Endemic, Coastal, open water on seaweed and under kelp holdfasts
North Island living as far north as East Cape, and South and Stewart Islands, from 0-446m

Micrelenchus tessellatus (A. Adams, 1851)
Height 9mm, Width 8mm
Marine, Native - Endemic, Intertidal
North, South, Stewart and Chatham Islands, from 0-59m

Roseaplagis artizona A. Adams, 1853
Height 8mm, Width 6mm
Marine, Native - Endemic
Southern North Island as far north as New Plymouth, and South and Stewart Islands, from 0-585m

Roseaplagis caelatus Hutton, 1884
Height 6mm, Width 5mm
Marine, Native - Endemic
Otago to Stewart Island, Auckland and Snares Islands, from 15-620m

Roseaplagis mortenseni (Odhner, 1924)
Height 7mm, Width 6mm
Marine, Native - Endemic
Southern South Island as far north as Oamaru, and Stewart, Snares, Auckland, Campbell, Antipodes, Bounty and Chatham Islands, Macquarie Ridge and Mernoo Bank, from 8-640m

Roseaplagis rufozona A. Adams, 1853
Height 8mm, Width 7mm
Marine, Native - Endemic
Three Kings Islands, north-eastern and south-western North Island, and far northern South Island, from 0-550m

Fossarina rimata (Hutton, 1884)
Width 5mm, Height 4mm
Marine, Native - Endemic, Intertidal
Three Kings Islands, and north-eastern North Island as far south as Mahia, from 0-50m

Kaiparathina fasciata B.A. Marshall, 1993
Marine, Native - Endemic
Wanganella Bank, southern Norfolk Ridge, from 133m

Diloma aethiops (Gmelin, 1791)
Width 38mm, Height 35mm
Marine, Native - Endemic, Intertidal
North, South, Stewart and Chatham Islands, from 0m

Diloma aridum (Finlay, 1926)
Height 19mm, Width 17mm
Marine, Native - Endemic, On sheltered mid-tidal rocks
North, South, Stewart, Auckland and Chatham Islands, from 0m

Diloma bicanaliculatum (Dunker, 1845)
Width 18mm, Height 17mm
Marine, Native - Endemic, Under stones at low tide
Three Kings, North, South, Stewart and Chatham Islands, from 0m

Diloma coracinum (Philippi, 1851)
Width 12mm, Height 12mm
Marine, Native - Endemic, Intertidal
North Island and western South Island, from 0m

Diloma durvillaea Spencer, Marshall & Waters, 2009
Width 13mm, Height 12mm
Marine, Native - Endemic, Under holdfasts & on blades of Durvillaea antarctica & adjacent rocks near low tide level
Eastern South Island as far north as Lyttelton Harbour, and Stewart and Auckland Islands, from 0m

Diloma nigerrimum (Gmelin, 1791)
Height 30mm, Width 26mm
Marine, On kelp at mid/high tide
Three Kings, North, South, Stewart, Snares, Auckland and Chatham Islands, from 0m

Diloma subrostratum (Gray, 1835)
Width 30mm, Height 30mm
Mudflat Top Shell, Marine, Native - Endemic, Intertidal
North, South and Stewart Islands, from 0m

Diloma zelandicum (Quoy & Gaimard, 1834)
Width 32mm, Height 24mm
Marine, Native - Endemic, Intertidal
North, South and Stewart Islands, from 0m

Stomatella oliveri (Iredale, 1912)
Length 11.75mm, Width 6.5mm, Height 3.5mm
Marine, Native - Endemic, Living among rocks near low water
Kermadec Islands, from 0-84m

Clanculus atypicus Iredale, 1912
Width 9.5mm, Height 8mm
Marine, Native - Endemic, Low tide under stones
Kermadec Islands, from 0-15m

Clanculus peccatus (Finlay, 1926)
Height 12mm, Width 12mm
Marine, Native - Endemic, In beach drift, and below low tide
Middlesex and King Banks, Three Kings Islands, and northern North Island, as far south as Ahipara on the west coast and as far south-east as Ranfurly Bank on the east coast, from 0-805m

Clanculus persicus Habe & Shikama, 1964
Width 25mm
Marine, Native - Non-endemic
Southern Japan and northern New Zealand. Kermadec Ridge and Cavalli Seamount, from 220-630m

Coelotrochus carinatus (B.A. Marshall, 1998)
Width 4.3mm, Height 3.8mm
Marine, Native - Endemic
Middlesex and King banks, Three Kings Islands, off Cape Reinga and off White Island, from 14-228m

Coelotrochus carmesinus (Webster, 1908)
Width 8mm, Height 6mm
Marine, Native - Endemic
Northern North Island as far south-east as Ranfurly Bank, from 0-188m

Coelotrochus chathamensis (Hutton, 1873)
Width 9mm, Height 7mm
Marine, Native - Endemic
Southern North Island as far north as Titahi Bay, and South, Stewart, Snares, Auckland, Campbell, Antipodes, Bounty and Chatham Islands, from 0-560m

Coelotrochus davegibbsi B.A. Marshall, 1998
Width 6.5mm
Marine, Native - Endemic
King Bank, Three Kings Islands, and north-eastern North Island as far south as Poor Knights Islands, from 4-123m

Coelotrochus oppressus (Hutton, 1878)
Width 6mm, Height 5.5mm
Marine, Native - Endemic
Three Kings Islands, and northern North Island as far south as Ahipara on the west coast and Mahia Peninsula on the east coast, from 0-88m

Coelotrochus polychromus B.A. Marshall, 1998
Width 5.9mm
Marine, Native - Endemic
Three Kings Islands and off Cape Reinga, from 14-88m

Coelotrochus rex (B.A. Marshall, 1998)
Width 5.8mm, Height 4.3mm
Marine, Native - Endemic
Middlesex Bank and Three Kings Islands, from 102-440m

Coelotrochus tiaratus (Quoy & Gaimard, 1834)
Width 18mm, Height 15mm
Marine, Recent, Fossil, Native - Endemic
North, South and Stewart Islands, from 0-450m

Coelotrochus viridis (Gmelin, 1791)
Width 30mm, Height 25mm
Marine, Recent, Fossil, Native - Endemic
North, South, Stewart and Chatham Islands, from 0-79m

Trochus camelophorus Webster, 1906
Width 13mm, Height 11mm
Marine, Native - Endemic
King Bank, Three Kings Islands, and north-eastern North Island as far south-east as Ranfurly Bank, from 0-188m

Antisolarium egenum (A.A. Gould, 1849)
Width 7.5mm, Height 5.5mm
Marine, Recent, Fossil, Native - Endemic
North, South, Stewart and Chatham Islands, from 0-549m

Talopena incerta Iredale, 1912
Marine, Native - Endemic
Kermadec Islands, from 0-82m

Zethalia zelandica (Hombron & Jacquinot, 1855)
Width 26mm, Height 15mm
Wheel Shell, Marine, Native - Endemic, Lower littoral to sublittoral
Northern and south-western North Island, northern and southern South Island, and Stewart Island, from 0-121m