Neritimorpha
Family: Helicinidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Alcadia guadeloupensis | (Sowerby, 1842) | ? | Guadeloupe, Lesser Antilles | Extant? | Access | |
| Aphanoconia corrugata | (Pease, 1865) | ? | Raiatea & Tahaa, Society Islands | Missing | Access | |
| Aphanoconia exigua | (Hombron & Jacquinot, 1848) | ? | Tahiti, Huahine, Maupiti, Society Islands | Extinct | Access | |
| Aphanoconia faba | (Garrett, 1884) | ? | Moorea and Raiatea, Society Islands | Extinct | Access | |
| Aphanoconia kuesteriana | (L. Pfeiffer, 1848) | ? | Tahiti & Bora Bora, Society Islands, French Polynesia | Extinct | Access | |
| Aphanoconia minuta | (Sowerby, 1842) | ? | Tahiti & Moorea, Society Islands | Extinct | Access | |
| Aphanoconia rusticana | Wagner, 1910 | ? | Bora Bora, Society Islands | Extinct | Access | |
| Nesiocina abdoui | Richling & Bouchet, 2013 | ? | Agakauitai, Akamaru, Aukena, Mangareva & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina gambierensis | Richling & Bouchet, 2013 | ? | Akamaru, Mangareva & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina grohi | Richling & Bouchet, 2013 | ? | Akamaru, Aukena, Mangareva & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina mangarevae | Richling & Bouchet, 2013 | ? | Mangareva & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina pauciplicata | Richling & Bouchet, 2013 | ? | Aukena & Mangareva, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina pazi | (Crosse, 1865) | ? | Agakauitai, Akamaru, Aukena, Kamaka & Mangareva, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina superoperculata | Richling & Bouchet, 2013 | ? | Akamaru, Aukena, Mangareva & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina trilamellata | Richling & Bouchet, 2013 | ? | Akamaru, Aukena, Mangareva & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Nesiocina unilamellata | Richling & Bouchet, 2013 | ? | Akamaru & Taravai, Gambier Islands, French Polynesia | Extinct | Access | |
| Ogasawarana arata | (Pilsbry, 1902) | ? | Hahajima Island, Bonin Islands (=Ogasawara Islands), Japan | Missing | Access | |
| Ogasawarana capsula | Pilsbry, 1902 | ? | Hahajima Island, Bonin Islands (=Ogasawara Islands), Japan | Missing | Access | |
| Ogasawarana chichijimana | (Kuroda, 1956) | ? | Chichijima, Bonin Islands (=Ogasawara Islands), Japan | Missing | Access | |
| Ogasawarana discrepans | (Pilsbry, 1902) | ? | Ogasawara Islands, Japan | Missing | Access | |
| Ogasawarana habei | Minato, 1980 | c.100yBP? | Ogasawara Islands, Japan | Missing | Access | |
| Ogasawarana hirasei | Pilsbry, 1902 | - | Hahajima, Ogasawara Islands (=Bonin Islands), Japan | Rediscovered | Access | |
| Ogasawarana metamorpha | (Kuroda, 1956) | - | Ogasawara Islands, Japan | Rediscovered | Access | |
| Ogasawarana nitida | Minato, 1980 | ? | Japan | Missing | Access | |
| Ogasawarana obtusa | Chiba, Sasaki, Suzuki & Horikoshi, 2008 | ? | Chichijima, Ogasawara Islands, Japan | Missing | Access | |
| Ogasawarana rex | (Wagner, 1909) | ? | Ogasawara Islands, Japan | Missing | Access | |
| Ogasawarana yoshiwarana | Pilsbry, 1902 | - | Hahajima, Ogasawara Islands (=Bonin Islands), Japan | Rediscovered | Access | |
|
Orobophana berniceia
|
(Pilsbry and Cooke, 1908) | ? | Kauai, Hawaiian Islands, USA | Extinct | Access | |
| Orobophana carinacosta | Preece, 1998 | Henderson Island orobophana snail | ? | Henderson Island, Pitcairn group, South Pacific | Extinct | Access |
| Orobophana juddii | (Pilsbry and Cooke, 1908) | ? | Kauai & Oahu, Hawaiian Islands, USA | Extinct | Access | |
| Orobophana stokesii praemagna | Neal, 1934 | ? | Kauai, Hawaiian Islands, USA | Extinct? | Access | |
| Orobophana stokesii stokesii | Neal, 1934 | ? | Kauai, Hawaiian Islands, USA | Extinct? | Access | |
| Orobophana uberta borealis | Neal, 1934 | ? | Oahu, Hawaiian Islands, USA | Extinct? | Access | |
| Orobophana uberta bryani form "A" | - | ? | Oahu, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Orobophana uberta exanima | Neal, 1934 | ? | Oahu, Hawaiian Islands, USA | Extinct | Access | |
| Orobophana uberta uberta | Gould, 1847 | ? | O’ahu, Hawaiian Islands | Extinct | Access | |
|
Pleuropoma hendersoni
|
Preece, 1998 | Henderson Island pleuropoma snail | ? | Henderson Island, Pitcairn group, South Pacific | Extinct | Access |
| Pleuropoma laciniosa kaaensis | Neal, 1934 | ? | Lanai, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma laciniosa kaaensis form "a" | - | ? | Lanai, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Pleuropoma laciniosa kahoolaweensis | Neal, 1934 | ? | Kahoolawe, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma laciniosa kiekieensis | Neal, 1934 | ? | Nihau, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma laciniosa konaensis form "a" | - | ? | Hawaii, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Pleuropoma laciniosa konaensis form "b" | - | ? | Hawaii, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Pleuropoma laciniosa konaensis form "c" | - | ? | Hawaii, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Pleuropoma laciniosa konaensis form "d" | - | ? | Hawaii, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Pleuropoma laciniosa matutina | Neal, 1934 | ? | Kauai, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma laciniosa moomomiensis | Neal, 1934 | ? | Molokai, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma laciniosa perparva | Neal, 1934 | ? | Oahu, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma laciniosa piliformis form "a" | - | ? | Lanai, Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Pleuropoma niihauensis | Neal, 1934 | ? | Niihau, Hawaiian Islands, USA | Extinct? | Access | |
| Pleuropoma subsculpta | Neal, 1934 | ? | Oahu, Hawaiian Islands, USA | Extinct? | Access | |
| Pseudotrochatella undulata | (Morelet, 1878) | ? | Mauritius | Extinct? | Access |
Family: Hydrocenidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Monterissa gowerensis | Iredale, 1944 | (rediscovered) | Lord Howe Island, New South Wales, Australia | Rediscovered | Access |
Family: Neritidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Neritina tiassalensis | Binder, 1955 | pre-1980's | Bandama River, Côte d'Ivoire (=Ivory Coast) | Missing | Access |