NZ Mollusca

Tritia ephamilla (Watson, 1882)

Tritia ephamilla
Trawled in 900 metres of water off Cape Kidnappers, 17mm
Classification: Gastropoda - Caenogastropoda - Neogastropoda
Family: NASSARIIDAE
Synonyms: (=Cryptonassarius Cernohorsky, =Nassarius Duméril)
Size/Grows to: Height 22mm, Width 12mm
Distribution: North, South and Chatham Islands. Trawled from 400 to 1800 metres. Also New South Wales along the eastern coast of Australia to Victoria, South Australia and Tasmania [A.C.F.M.]
Some known Localities
  • West Norfolk Ridge, NW of Cape Reinga
  • Kermadec Ridge, 1022-1058 metres *2
  • South Cavalli Seamount, ENE of North Cape, 850-840 metres *2
  • SW of Great Island, Three Kings Islands, 440 metres
  • Brothers volcano, S Kermadec Ridge, 1400-1600 metres
  • Kermadec Ridge, Rumble II West Seamount, 1287-1378 metres
  • Off Hokianga, 657 metres *2
  • Rumble III submarine volcano, S Kermadec Ridge, 700-845 metres *2
  • E of Great Barrier Island, Hauraki Gulf, 630-645 metres
  • Southern Kermadec Ridge, Clark Seamount, chimney field, north cone *2
  • Mercury Knoll, E of Mercury Islands, 990-1100 metres *2
  • Mercury Knoll, E of Mercury Islands, 975-1190 metres *2
  • E of Aldermen Islands, Bay of Plenty, 366-549 metres
  • NE of East Cape
  • SW of Manukau Harbour
  • NE off East Cape, 1280 metres, (holotype)
  • E of Mahia Peninsula
  • E of Cape Kidnappers, 785-882 metres
  • Challenger Plateau, NW South Island, 750 metres
  • SE of Cape Kidnappers, 900 metres *2
  • Off Flat Point, W margin of Hikurangi Trench, 1642-1692 metres, (type of dissimilis Watson, 1886)
  • Challenger Plateau, NW South Island, 570-572 metres
  • Challenger Plateau, off Westport, 1029 metres *2
  • Challenger Plateau, NW South Island, 1029 metres *2
  • ENE of Castlepoint
  • Challenger Plateau, off Westport, NW South Island, 1005-1009 metres *2
  • Off Westport, 695 metres
  • Hikurangi Trench, off Castlepoint, 2200-2328 metres *2
  • NW of Westport
  • Eastern approaches to Cook Strait, 1006 metres
  • Off Palliser Bay, Cook Strait, 1006 metres
  • Off Palliser Bay, Cook Strait
  • 41 km SE of Cape Campbell, 434-446-metres
  • SE of Cape Campbell, 939-1019 metres
  • SE of Cape Campbell, Marlborough, 1292-1395 metres *2
  • Off Greymouth, 750 metres
  • Off Clarence River mouth, Marlborough, 1054-1163 metres
  • E of Greymouth
  • S side of Hikurangi Trench, Chatham Rise, 1568 metres *2
  • S of Kaikoura Peninsula, 640 metres
  • Northern Mernoo Slope, Chatham Rise, 999-984 metres
  • Head of Hikurangi Trench, N Chatham Rise, 1723-1549 metres *2
  • Chatham Rise, 922-1013 metres *2
  • NE of Mernoo Bank, Chatham Rise, 683-703 metres
  • Chatham Rise, 402 metres
  • Chatham Rise, 585 metres
  • Off Milford Sound, Fiordland, 610 metres
  • SE of Pitt Island, Chatham Islands, 604 metres *2
  • Thompson Basin floor, Thompson Sound, 350 metres
  • Thompson Basin floor, Thompson Sound, 350 metres
  • Thompson Basin floor, Thompson Sound, 340-362 metres *2
  • Seymour Basin, Doubtful Sound entrance, 117-128 metres *2
  • Bradshaw Basin Floor, Bradshaw Sound, 415 metres *2
  • Doubtful Sound, Utah Basin floor, 400 metres
  • Karitane Canyon, off Taiaroa Head, 530-585 metres *2
  • Taiaroa Canyon, off E Otago Peninsula, 549 metres
  • Papanui Canyon, NE of Taiaroa Head, Otago, 660 metres *2
  • Papanui Canyon, off Otago Peninsula, 340-620 metres
more localitiesspecies mapgenus map
References:
  • Cernohorsky, W.O. 1981: Revision of the Australian and New Zealand Tertiary and Recent species of the family Nassariidae (Mollusca: Gastropoda), Records of the Auckland Institute and Museum, 18 (p.180)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.205)

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