- nida, Cylichna nida McNeil, 1984 † - (CYLICHNIDAE) (FOSSIL)
- Nidarica, Genus Nidarica Cox, 1961 (CARDIIDA (unassigned)) (FOSSIL)
- nidarosiensis, Xylophaga nidarosiensis L.N. Santhakumaran, 1980 - (XYLOPHAGAIDAE)
- nidhoeggi, Spiroecus nidhoeggi McNamara, 1978 † - (LOXONEMATIDAE) (FOSSIL)
- nidicostata, Brachypodella nidicostata G.C. Spence, 1920 - (UROCOPTIDAE)
- nidorum, Sabinella nidorum H.A. Pilsbry, 1956 - syn of: Sabinella troglodytes (K.H.J. Thiele, 1925) - (EULIMIDAE)
- nidulina, Patella nidulina É.A.A. Locard, 1896 - (PATELLIDAE)
- nidulina rufescens, Patella nidulina rufescens É.A.A. Locard, 1896 - (PATELLIDAE)
- niecaensis, Pupa niecaensis K.H. Barnard, 1963 - (ACTEONIDAE)
- niederhoeferi, Phasmoconus niederhoeferi E. Monnier, L. Limpalaër & F.Jr. Lorenz, 2012 - (CONIDAE)
- niedzwiedzkii, Exotornoceras niedzwiedzkii (Dybczynski, 1913 †) - (POSTTORNOCERATIDAE) (FOSSIL)
- nielamuensis, Multisulcites nielamuensis Liang, 1983 † - (PROCARNITIDAE) (FOSSIL)
- nielsenae, Kioconus nielsenae (J.A. Marsh, 1962) - (CONIDAE)
- nielsenae reductaspiralis, Conus nielsenae reductaspiralis J.G. Walls, 1979 - syn of: Kioconus reductaspiralis (J.G. Walls, 1979) - (CONIDAE)
- nielsenae typhon, Conus nielsenae typhon R.N. Kilburn, 1975 - syn of: Kioconus typhon (R.N. Kilburn, 1975) - (CONIDAE)
- nielseni, Cystiscus nielseni C.F. Laseron, 1948 - syn of: Cystiscus minutissimus (J.E. Tenison-Woods, 1876) - (CYSTISCIDAE)
- nielseni, Graptacme nielseni (K.L. Lamprell & J.M. Healy, 1998) - (DENTALIIDAE)
- nielseni, Glyptophiceras nielseni Spath, 1935 † - syn of: Hypophiceras gracile (Spath, 1930 †) - (KASHMIRITIDAE) (FOSSIL)
- nielseni, Laevidentalium nielseni K.L. Lamprell & J.M. Healy, 1998 - syn of: Graptacme nielseni (K.L. Lamprell & J.M. Healy, 1998) - (LAEVIDENTALIIDAE)
- nielseni, Echinolittorina nielseni J.F. Araya & D.G. Reid, 2016 † - (LITTORINIDAE) (FOSSIL)
- nielseni, Groenlandites nielseni Kummel, 1953 † - (LONGOBARDITIDAE) (FOSSIL)
- nielseni, Marginella nielseni C.F. Laseron, 1948 - syn of: Cystiscus minutissimus (J.E. Tenison-Woods, 1876) - (MARGINELLIDAE)
- nielseni, Patinigera nielseni DeVries, 2007 † - (NACELLIDAE) (FOSSIL)
- nielseni, Octopoteuthis nielseni (G.C. Robson, 1948) - (OCTOPOTEUTHIDAE)
- nielseni, Diminovula nielseni C.N. Cate, 1976 - (OVULIDAE)
- nielseni, Rissoina nielseni (C.F. Laseron, 1950) - (RISSOINIDAE)
- nielseni, Cymbiola complexa nielseni D.F. McMichael, 1963 - (VOLUTIDAE)
- nielseni, Tompophiceras nielseni (Spath, 1935 †) - (XENODISCIDAE) (FOSSIL)
- nielseni, Yoldiella nielseni Schnetler, 2001 † - (YOLDIIDAE) (FOSSIL)
- Nielsenoceras, Genus Nielsenoceras Furnish , 1966 (PARACELTITIDAE) (FOSSIL)
- nielsi, Epifungium nielsi E. Gittenberger & A. Gittenberger, 2005 - (EPITONIIDAE)
- Nienhuisiella, Genus Nienhuisiella F.L. Giusti & G. Manganelli, 1987 (HYGROMIIDAE)
- nienkeae, Fulvia nienkeae J.J. Ter Poorten, 2012 - (CARDIIDAE)
- nieortsmindensis, Anahamulina nieortsmindensis (Eristavi, 1955 †) - (ANAHAMULINIDAE) (FOSSIL)
- nieri, Himalayites nieri (Pictet, 1867 †) - (HIMALAYITIDAE) (FOSSIL)
- Nierstraszella, Genus Nierstraszella H.F. Nierstrasz, 1905 (NIERSTRASZELLIDAE)
- NIERSTRASZELLIDAE Sirenko, 1992 - Family (POLYPLACOPHORA-NEOLORICATA-LEPIDOPLEURIDA-LEPIDOPLEURINA)
- nierstraszi, Acanthochitona nierstraszi (E.R. Sykes, 1907) - (ACANTHOCHITONIDAE)
- nierstraszi, Gregorioiscala nierstraszi (M.M. Schepman, 1909) - (EPITONIIDAE)
- nierstraszi, Epitonium nierstraszi M.M. Schepman, 1909 - syn of: Gregorioiscala nierstraszi (M.M. Schepman, 1909) - (EPITONIIDAE)
- nierstraszi, Marshallena nierstraszi (M.M. Schepman, 1913) - (HORAICLAVIDAE)
- nierstraszi, Leptochiton nierstraszi (E.H.J. Leloup, 1981) - (LEPTOCHITONIDAE)
- nierstraszi, Hapalochlaena nierstraszi (W. Adam, 1938) - (OCTOPODIDAE)
- nierstraszi, Proneomenia nierstraszi H.A. Stork in H.F. Nierstrasz & H.A. Stork, 1940 - syn of: Anamenia gorgonophila (A. Kowalevsky, 1880) - (PRONEOMENIIDAE)
- nierstraszi, Hypomenia nierstraszi L.E.A. van Lummel, 1930 - (PRUVOTINIDAE)
- nierstraszi, Anamenia nierstraszi H.A. Stork, 1940 - syn of: Anamenia gorgonophila (A. Kowalevsky, 1880) - (STROPHOMENIIDAE)
- Nierstraszia, Genus Nierstraszia H. Heath, 1918 (LEPIDOMENIIDAE)
- nierstrasziana, Rhyssoplax nierstrasziana P. Kaas, 1957 - (CHITONIDAE)
- nierstrazi, Gregorioiscala nierstrazi (M.M. Schepman, 1909) - syn of: Gregorioiscala nierstraszi (M.M. Schepman, 1909) - (EPITONIIDAE)
- nieseni, Thordisa nieseni G.L. Chan & T.M. Gosliner, 2007 - (DISCODORIDIDAE)
- nieszkowskii, Ectomaria nieszkowskii (A. Schmidt, 1858 †) - (LOPHOSPIRIDAE) (FOSSIL)
- nieszkowskii, Murchisonia nieszkowskii A. Schmidt, 1858 † - syn of: Ectomaria nieszkowskii (A. Schmidt, 1858 †) - (MURCHISONIIDAE) (FOSSIL)
- niethammeri, Siciliaria gibbula niethammeri (B. Rensch, 1934) - (CLAUSILIIDAE)
- nietneri, Tortulosa nietneri (G. Nevill, 1871) - (PUPINIDAE)
- nietneri caperata, Tortulosa nietneri caperata (J. Collett, 1899) - (PUPINIDAE)
- nietneri unicolor, Tortulosa nietneri unicolor (J. Collett, 1899) - (PUPINIDAE)
- nieulandei, Colina nieulandei Renard, 1994 † - (CERITHIIDAE) (FOSSIL)
- nieulandei, Ireneia nieulandei Janssen, 1995 † - (CUVIERINIDAE) (FOSSIL)
- nieulandei, Stazzania fragilis nieulandei D. Fehse, 1988 † - (MARGINELLIDAE) (FOSSIL)
- nieuwenhuisi, Schepmania nieuwenhuisi (M.M. Schepman, 1898) - (UNIONIDAE)
- nifat, Buccinum nifat J.G. Bruguière, 1789 - syn of: Pusionella nifat (J.G. Bruguière, 1789) - (BUCCINIDAE)
- nifat, Pusionella nifat (J.G. Bruguière, 1789) - (CLAVATULIDAE)
- nifat, Pusionella nifat L.C. Kiener, 1840 - syn of: Pusionella nifat angulosa H. Strebel, 1914 - (CLAVATULIDAE)
- nifat angulosa, Pusionella nifat angulosa H. Strebel, 1914 - (CLAVATULIDAE)
- nifat major, Pusionella nifat major H. Strebel, 1914 - (CLAVATULIDAE)
- nifat scalarinus, Pusionella nifat scalarinus (J.B.P.A. Lamarck, 1816) - (CLAVATULIDAE)
- nifella, Mauritia nifella G.R. Sulliotti, 1924 - syn of: Mauritia scurra (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- nifikelia, Gulella nifikelia K.C. Emberton, 2001 - (STREPTAXIDAE)
- nigella, Mauritia nigella G.R. Sulliotti, 1924 - syn of: Mauritia scurra (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- nigella, Leucozonia nigella O.A.L. Mörch, 1852 - syn of: Leucozonia ocellata (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- nigella, Nassa nigella L.A. Reeve, 1854 - syn of: Nassarius nigellus (L.A. Reeve, 1854) - (NASSARIIDAE)
- nigella, Pinna nigella A. De Gregorio, 1885 - syn of: Pinna nobilis C. Linnaeus, 1758 - (PINNIDAE)
- nigella, Elliptio nigella I. Lea, 1852 - (UNIONIDAE)
- nigellus, Nassarius nigellus (L.A. Reeve, 1854) - (NASSARIIDAE)
- nigellus nuttalli, Nassarius nigellus nuttalli N.H. Ludbrook, 1978 † - syn of: Nassarius nuttalli (N.H. Ludbrook, 1978 †) - (NASSARIIDAE) (FOSSIL)
- niger, Amphithalamus niger E. Rolán, 1991 - (ANABATHRIDAE)
- niger, Hesperarion niger (J.G. Cooper, 1872) - (ARIOLIMACIDAE)
- niger, Belemnites niger Lister, 1678 † - (BELEMNITELLIDAE) (FOSSIL)
- niger, Pachnodus niger (H. Dufo, 1840) - (CERASTUIDAE)
- niger, Enoplochiton niger (Barnes, 1824) - (CHITONIDAE)
- niger, Mauritia eglantina niger (P.L. Duclos, 1833) - (CYPRAEIDAE)
- niger, Latirus niger N.H. Odhner, 1917 - (FASCIOLARIIDAE)
- niger, Otohoplites waltoni niger T.L. Casey † - (HOPLITIDAE) (FOSSIL)
- niger, Austropyrgus niger (J.R.C. Quoy & J.P. Gaimard, 1834) - (HYDROBIIDAE)
- niger, Limax niger H.R. Simroth, 1901 - syn of: Eumilax brandti (E.C. Von Martens, 1880) - (LIMACIDAE)
- niger, Ercolania niger H.M. Lemche, 1935 - syn of: Ercolania nigra (H.M. Lemche, 1935) - (LIMAPONTIIDAE)
- niger, Musculus niger Gray, 1824 - (MYTILIDAE)
- niger, Brachidontes niger (J.F. Gmelin, 1791) - (MYTILIDAE)
- niger, Lithodomus niger D'Orbigny, 1853 - syn of: Lithophaga nigra d'Orbigny, 1845 - (MYTILIDAE)
- niger, Octopus niger C.S. Rafinesque, 1814 - syn of: Octopus vulgaris G.L.C.F.D. Cuvier, 1797 - (OCTOPODIDAE)
- niger, Octopus niger A. Risso, 1854 - syn of: Octopus vulgaris G.L.C.F.D. Cuvier, 1797 - (OCTOPODIDAE)
- niger, Supplanaxis niger (J.R.C. Quoy & J.P. Gaimard, 1833) - (PLANAXIDAE)
- niger, Sinuites niger E.F.R.K. Koken, 1897 † - (SINUITIDAE) (FOSSIL)
- niger, Prisogaster niger (W. Wood, 1828) - (TURBINIDAE)
- niger, Unio niger L. de Joannis, 1859 - syn of: Unio tumidus A. Retzius, 1788 - (UNIONIDAE)
- niger, Zonitarion niger H.A. Pilsbry, 1919 - (UROCYCLIDAE)
- niger obesus, Musculus niger obesus W.H. Dall, 1916 - syn of: Musculus svecicus (O. Fabricius, 1788) - (MYTILIDAE)
- niger protractus, Musculus niger protractus W.H. Dall, 1916 - syn of: Musculus svecicus (O. Fabricius, 1788) - (MYTILIDAE)
- Nigerapana, Genus Nigerapana Adegoke, 1977 (NEOGASTROPODA (unassigned)) (FOSSIL)
- Nigericeras, Genus Nigericeras Schneegans , 1943 (ACANTHOCERATIDAE) (FOSSIL)
- nigeriense, Pseudovascoceras nigeriense (Woods, 1911 †) - (ACANTHOCERATIDAE) (FOSSIL)
- nigeriense, Vascoceras nigeriense Woods, 1911 † - syn of: Pseudovascoceras nigeriense (Woods, 1911 †) - (VASCOCERATIDAE) (FOSSIL)
- nigeriense, Tugurium nigeriense R.B. Newton, 1922 † - (XENOPHORIDAE) (FOSSIL)
- nigeriensis, Anadara nigeriensis R.B. Newton, 1922 † - syn of: Protonoetia nigeriensis (R.B. Newton, 1922 †) - (ARCIDAE) (FOSSIL)
- nigeriensis, Genota nigeriensis J.L. Vera-Peláez, 2004 - syn of: Genota nicklesi J. Knudsen, 1952 - (BORSONIIDAE)
- nigeriensis, Metengonoceras nigeriensis Furon, 1935 † - syn of: Metengonoceras dumbli (Cragin, 1893 †) - (ENGONOCERATIDAE) (FOSSIL)
- nigeriensis, Acrilla nigeriensis F.E. Eames, 1957 † - (EPITONIIDAE) (FOSSIL)
- nigeriensis, Mazzalina nigeriensis (R.B. Newton, 1922 †) - (FASCIOLARIIDAE) (FOSSIL)
- nigeriensis, Glycymeris nigeriensis R.B. Newton, 1922 † - (GLYCYMERIDIDAE) (FOSSIL)
- nigeriensis, Aspatharia nigeriensis J. Daget, 1962 - syn of: Aspatharia dahomeyensis (I. Lea, 1859) - (IRIDINIDAE)
- nigeriensis, Jania nigeriensis (R.B. Newton, 1922 †) - (MURICIDAE) (FOSSIL)
- nigeriensis, Modiolatus nigeriensis (M. Nicklés, 1955) - (MYTILIDAE)
- nigeriensis, Protonoetia nigeriensis (R.B. Newton, 1922 †) - (NOETIIDAE) (FOSSIL)
- nigeriensis, Ovula nigeriensis R.B. Newton, 1922 † - (OVULIDAE) (FOSSIL)
- nigeriensis, Pseudotissotia nigeriensis Woods, 1911 † - (PSEUDOTISSOTIIDAE) (FOSSIL)
- nigeriensis, Rissoina nigeriensis O.S. Adegoke, 1977 † - (RISSOINIDAE) (FOSSIL)
- nigeriensis, Pterotegulaedon nigeriensis (D. Mongin, 1968 †) - (TEGULAEDONTIDAE) (FOSSIL)
- nigeriensis, Peronaea nigeriensis R.B. Newton, 1922 † - (TELLINIDAE) (FOSSIL)
- nigeriensis, Eopleurotoma nigeriensis R.B. Newton, 1922 † - (TURRIDAE) (FOSSIL)
- nigeriensis, Hyriopsis nigeriensis D. Mongin, 1968 † - syn of: Pterotegulaedon nigeriensis (D. Mongin, 1968 †) - (UNIONIDAE) (FOSSIL)
- nigeriensis, Paravascoceras nigeriensis Woods, 1911 † - syn of: Pseudovascoceras nigeriense (Woods, 1911 †) - (VASCOCERATIDAE) (FOSSIL)
- nigeriensis bicarinata, Pseudotissotia nigeriensis bicarinata Barber, 1957 † - (PSEUDOTISSOTIIDAE) (FOSSIL)
- nigeriensis plana, Pseudotissotia nigeriensis plana Barber, 1957 † - (PSEUDOTISSOTIIDAE) (FOSSIL)
- nigeriensis tortuosa, Hyriopsis nigeriensis tortuosa D. Mongin, 1968 † - syn of: Pterotegulaedon tortuosa (D. Mongin, 1968 †) - (UNIONIDAE) (FOSSIL)
- nigeriensis tricarinata, Pseudotissotia nigeriensis tricarinata Reyment, 1954 † - (PSEUDOTISSOTIIDAE) (FOSSIL)
- nigerina, Crenavolva nigerina H. Dufo, 1840 - syn of: Crenavolva striatula (G.B. I Sowerby, 1828) - (OVULIDAE)
- Nigerithium, Genus Nigerithium Adegoke, 1977 (CAENOGASTROPODA (unassigned)) (FOSSIL)
- nigerrima, Aegires gardineri nigerrima N. Yonow, 1994 - (AEGIRIDAE)
- nigerrima, Nerita nigerrima J.H. Chemnitz - (NERITIDAE)
- nigerrima, Nembrotha nigerrima L.S.R. Bergh, 1877 - (POLYCERIDAE)
- nigerrima, Crassispira nigerrima (G.B. I Sowerby, 1834) - (PSEUDOMELATOMIDAE)
- nigerrima, Siphonaria nigerrima E.A. Smith, 1903 - (SIPHONARIIDAE)
- nigerrima, Diloma nigerrima (J.F. Gmelin, 1791) - (TROCHIDAE)
- nigerrima digna, Diloma nigerrima digna H.J. Finlay, 1926 - (TROCHIDAE)
- nigerrima kubaryana, Nembrotha nigerrima kubaryana L.S.R. Bergh, 1877 - syn of: Nembrotha kubaryana L.S.R. Bergh, 1877 - (POLYCERIDAE)
- nigerrimus, Limax nigerrimus H.R. Simroth, 1901 - (LIMACIDAE)
- nigerrimus, Omphalius nigerrimus (J.F. Gmelin, 1791) - (TEGULIDAE)
- nigerrimus, Turbo nigerrimus J.F. Gmelin, 1791 - syn of: Diloma nigerrima (J.F. Gmelin, 1791) - (TURBINIDAE)
- nigerrimus, Unio nigerrimus I. Lea, 1852 - syn of: Villosa lienosa (T.A. Conrad, 1834) - (UNIONIDAE)
- nigieriensis, Mazzalina nigieriensis (R.B. Newton, 1922 †) - (FASCIOLARIIDAE) (FOSSIL)
- nigmatullini, Kondakovia nigmatullini V.V. Laptikhovsky, A.I. Arkhipkin & K.S. Bolstad, 2009 - (ONYCHOTEUTHIDAE)
- nigra, Achatinella nigra W. Newcomb - syn of: Amastra nigra W. Newcomb, 1855 - (ACHATINELLIDAE)
- nigra, Hallaxa nigra J.J. Risbec, 1928 - syn of: Hallaxa fuscescens (W.H. Pease, 1871) - (ACTINOCYCLIDAE)
- nigra, Amastra nigra W. Newcomb, 1855 - (AMASTRIDAE)
- nigra, Aplysia nigra D'Orbigny, 1837 - (APLYSIIDAE)
- nigra, Aplysia nigra F.W. Hutton - syn of: Aplysia juliana J.R.C. Quoy & J.P. Gaimard, 1832 - (APLYSIIDAE)
- nigra, Arca nigra É. Lamy, 1907 - syn of: Didimacar nigra (É. Lamy, 1907) - (ARCIDAE)
- nigra, Chrysallis rollei nigra (P. Bartsch, 1932) - (BRADYBAENIDAE)
- nigra, Kora nigra L.R.L. Simone, 2015 - (BULIMULIDAE)
- nigra, Cyerce nigra L.S.R. Bergh, 1871 - (CALIPHYLLIDAE)
- nigra, Pachnodus nigra (H. Dufo, 1840) - syn of: Pachnodus niger (H. Dufo, 1840) - (CERASTUIDAE)
- nigra, Acanthopleura nigra (D.W. Barnes, 1824) - (CHITONIDAE)
- nigra, Watasella nigra M. Sasaki, 1920 - syn of: Vampyroteuthis infernalis C. Chun, 1903 - (CIRROTEUTHIDAE)
- nigra, Itala nigra A. Issel, 1866 - syn of: Charpentieria itala nigra (A. Issel, 1866) - (CLAUSILIIDAE)
- nigra, Hemiphaedusa similaris nigra (H. Minato & A. Tada, 1977) - (CLAUSILIIDAE)
- nigra, Hemiphaedusa odontochila nigra H.A. Pilsbry, 1901 - (CLAUSILIIDAE)
- nigra, Charpentieria itala nigra (A. Issel, 1866) - (CLAUSILIIDAE)
- nigra, Zierliana nigra J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Vexillum oleaceum (L.A. Reeve, 1844) - (COSTELLARIIDAE)
- nigra, Vexillum nigra P.M. Pallary, 1900 - syn of: Pusia ebenus (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- nigra, Pusia nigra P. Dautzenberg & J.L. Bouge, 1923 - syn of: Pusia luculentum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- nigra, Vexillum vulpecula nigra (C. Linnaeus, 1758) - (COSTELLARIIDAE)
- nigra, Cymaclymenia nigra W. Korn, 1991 † - (CYMACLYMENIIDAE) (FOSSIL)
- nigra, Dendrodoris nigra (W. Stimpson, 1855) - (DENDRODORIDIDAE)
- nigra, Dendrodoris nigra C.T. Simpson, 1855 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DENDRODORIDIDAE)
- nigra, Kentrodoris nigra J.J. Risbec, 1928 - (DISCODORIDIDAE)
- nigra, Doris nigra W. Stimpson, 1855 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DORIDIDAE)
- nigra, Doto nigra C.N.E. Eliot, 1910 - syn of: Doto pinnatifida (G. Montagu, 1804) - (DOTIDAE)
- nigra, Eatoniella nigra (A.V.M.D. D'Orbigny, 1840) - (EATONIELLIDAE)
- nigra, Marinula nigra (R.A. Philippi, 1841) - (ELLOBIIDAE)
- nigra, Phidiana nigra F.M. MacFarland, 1966 - syn of: Phidiana hiltoni (O'Donoghue, 1927) - (FACELINIDAE)
- nigra, Fissurella nigra R.P. Lesson, 1831 - (FISSURELLIDAE)
- nigra, Mourlonia nigra E.F.R.K. Koken, 1889 † - (GOSSELETINIDAE) (FOSSIL)
- nigra, Helicarion nigra J.R.C. Quoy & J.P. Gaimard, 1832 - (HELICARIONIDAE)
- nigra, Aplysiopsis nigra (K. Baba, 1949) - (HERMAEIDAE)
- nigra, Buchema nigra P.J. Fallon, 2010 - (HORAICLAVIDAE)
- nigra, Fluvidona nigra J.R.C. Quoy & J.P. Gaimard, 1834 - (HYDROBIIDAE)
- nigra, Discula nigra T.D.A. Cockerell, 1922 - syn of: Discula attrita (R.T. Lowe, 1831) - (HYGROMIIDAE)
- nigra, Ercolania nigra (H.M. Lemche, 1935) - (LIMAPONTIIDAE)
- nigra, Alderiopsis nigra (K. Baba, 1937) - (LIMAPONTIIDAE)
- nigra, Limapontia nigra G. Johnston, 1836 - syn of: Limapontia capitata (O.F. Müller, 1774) - (LIMAPONTIIDAE)
- nigra, Volutella nigra G. Perry, 1811 - syn of: Vasum turbinellus (C. Linnaeus, 1758) - (MARGINELLIDAE)
- nigra, Melanopsis doriae nigra H.E.J. Biggs, 1934 - (MELANOPSIDAE)
- nigra, Tandonia nigra (L. Pfeiffer, 1894) - (MILACIDAE)
- nigra, Mitra nigra (J.F. Gmelin, 1791) - (MITRIDAE)
- nigra, Mitra nigra J.R.C. Quoy & J.P. Gaimard, 1833 - syn of: Vexillum oleaceum (L.A. Reeve, 1844) - (MITRIDAE)
- nigra, Mitra nigra L.A. Reeve, 1844 - syn of: Mitra carbonaria W.J. Swainson, 1822 - (MITRIDAE)
- nigra, Hormotoma nigra Longst, 1924 † - (MURCHISONIIDAE) (FOSSIL)
- nigra, Lithophaga nigra d'Orbigny, 1845 - (MYTILIDAE)
- nigra, Musculus nigra J.E. Gray, 1824 - syn of: Musculus niger Gray, 1824 - (MYTILIDAE)
- nigra, Hebra nigra J.B. Hombron & C.H. Jacquinot, 1854 - (NASSARIIDAE)
- nigra, Nassa nigra C. Rousseau, 1854 - syn of: Hebra nigra J.B. Hombron & C.H. Jacquinot, 1854 - (NASSARIIDAE)
- nigra, Nerita nigra L.W. Dillwyn, 1817 - syn of: Nerita polita C. Linnaeus, 1758 - (NERITIDAE)
- nigra, Theodoxus semiplicatus nigra E. Jekelius, 1932 † - (NERITIDAE) (FOSSIL)
- nigra, Theodoxus marteli nigra (P.M. Pallary, 1918) - (NERITIDAE)
- nigra, Didimacar nigra (É. Lamy, 1907) - (NOETIIDAE)
- nigra, Eledone nigra W.E. Hoyle, 1910 - syn of: Eledone schultzei (W.E. Hoyle, 1910) - (OCTOPODIDAE)
- nigra, Aphrodoctopus nigra W.E. Hoyle, 1910 - syn of: Eledone schultzei (W.E. Hoyle, 1910) - (OCTOPODIDAE)
- nigra, Peronia nigra J.E. Gray, 1850 - syn of: Scaphis atra (R.P. Lesson, 1831) - (ONCHIDIIDAE)
- nigra, Pasithea nigra J.G. Totten, 1834 - syn of: Bittiolum alternatum (T. Say, 1822) - (PARTULIDAE)
- nigra, Cymbula nigra J.B.P.A. Lamarck, 1819 - syn of: Cymbula safiana (J.B.P.A. Lamarck, 1819) - (PATELLIDAE)
- nigra, Patella nigra E.M. Da Costa, 1771 - syn of: Cymbula safiana (J.B.P.A. Lamarck, 1819) - (PATELLIDAE)
- nigra, Phyllidiella nigra (J.C. van Hasselt, 1824) - (PHYLLIDIIDAE)
- nigra, Phyllidia nigra W.H. Pease, 1868 - syn of: Phyllidiella rosans (L.S.R. Bergh, 1873) - (PHYLLIDIIDAE)
- nigra, Atrina nigra L.W. Dillwyn, 1817 - syn of: Atrina vexillum (I. von Born, 1778) - (PINNIDAE)
- nigra, Planaxis nigra J.R.C. Quoy & J.P. Gaimard, 1834 - syn of: Supplanaxis niger (J.R.C. Quoy & J.P. Gaimard, 1833) - (PLANAXIDAE)
- nigra, Pseudozygopleura nigra Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- nigra, Pinctada nigra (A.A. Gould, 1850) - (PTERIIDAE)
- nigra, Tancredia nigra Arkell, 1927 † - (TANCREDIIDAE) (FOSSIL)
- nigra, Nototeredo nigra H.M.D. de Blainville, 1828 - syn of: Nototeredo norvagica (L. Spengler, 1792) - (TEREDINIDAE)
- nigra, Stomatella nigra J.R.C. Quoy & J.P. Gaimard, 1834 - (TROCHIDAE)
- nigra, Vasum nigra G. Perry, 1811 - syn of: Vasum turbinellus (C. Linnaeus, 1758) - (TURBINELLIDAE)
- nigra, Prisogaster nigra W. Wood, 1828 - syn of: Prisogaster niger (W. Wood, 1828) - (TURBINIDAE)
- nigra, Decollidrillia nigra T. Habe & K. Itô, 1965 - (TURRIDAE)
- nigra, Pleurotoma nigra V.L.V. Potiez, 1838 - syn of: Bela nebula (G. Montagu, 1803) - (TURRIDAE)
- nigra, Unio nigra C.S. Rafinesque, 1819 - syn of: Elliptio crassidens J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- nigra, Coriocella nigra (H.M.D. de Blainville, 1824) - (VELUTINIDAE)
- nigra, Lamellaria nigra H.M.D. de Blainville, 1824 - syn of: Coriocella nigra (H.M.D. de Blainville, 1824) - (VELUTINIDAE)
- nigra, Vaginulus nigra D.F. Heynemann, 1885 - (VERONICELLIDAE)
- nigra brunnea, Dendrodoris nigra brunnea L.S.R. Bergh, 1890 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DENDRODORIDIDAE)
- nigra bullata, Modiola nigra bullata K.M. Derjugin, 1928 - syn of: Musculus svecicus (O. Fabricius, 1788) - (MYTILIDAE)
- nigra bullata, Musculus nigra bullata K.M. Derjugin, 1928 - syn of: Musculus svecicus (O. Fabricius, 1788) - (MYTILIDAE)
- nigra coerulea, Dendrodoris nigra coerulea L.S.R. Bergh, 1880 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DENDRODORIDIDAE)
- nigra fusca, Elliptio nigra fusca C.S. Rafinesque, 1820 - syn of: Elliptio crassidens J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- nigra luteopunctata, Dendrodoris nigra luteopunctata L.S.R. Bergh, 1905 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DENDRODORIDIDAE)
- nigra maculata, Elliptio nigra maculata C.S. Rafinesque, 1820 - syn of: Elliptio crassidens J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- nigra minor, Marinula nigra minor C. Vélain, 1877 - (ELLOBIIDAE)
- nigra nigerrima, Dendrodoris nigra nigerrima L.S.R. Bergh, 1888 - syn of: Dendrodoris nigra (W. Stimpson, 1855) - (DENDRODORIDIDAE)
- nigra pallens, Polybranchia nigra pallens R.F. Burn, 1957 - syn of: Polybranchia pallens (R.F. Burn, 1957) - (CALIPHYLLIDAE)
- nigra pallens, Cyerce nigra pallens R.F. Burn, 1957 - syn of: Polybranchia pallens (R.F. Burn, 1957) - (CALIPHYLLIDAE)
- nigrachlamydae, Arion nigrachlamydae A. Torres Mínguez, 1925 - syn of: Arion lusitanicus J.F. Mabille, 1868 - (ARIONIDAE)
- nigraerupis, Pyrgulina nigraerupis E. Saurin, 1959 - (PYRAMIDELLIDAE)
- nigrans, Nipponacmea nigrans (T. Kira, 1961) - (LOTTIIDAE)
- nigrans, Trochomorpha nigrans E.A. Smith, 1889 - (TROCHOMORPHIDAE)
- nigratus, Pachychilus nigratus (F. Poey, 1858) - (PACHYCHILIDAE)
- nigreola, Nerita nigreola P.F. Röding, 1798 - syn of: Nerita fulgurans J.F. Gmelin, 1791 - (NERITIDAE)
- nigrescens, Deroceras nigrescens H.R. Simroth, 1894 - syn of: Deroceras lombricoides P.M.A. Morelet, 1845 - (AGRIOLIMACIDAE)
- nigrescens, Lirobarleeia nigrescens P. Bartsch & H.A. Rehder, 1939 - syn of: Lirobarleeia galapagensis (P. Bartsch, 1911) - (BARLEEIIDAE)
- nigrescens, Batillaria nigrescens K.T. Menke, 1828 - syn of: Lampanella minima (J.F. Gmelin, 1791) - (BATILLARIIDAE)
- nigrescens, Helicostyla smaragdina nigrescens (C.G. Semper, 1877) - (BRADYBAENIDAE)
- nigrescens, Calycia crystallina nigrescens H.C. Fulton, 1910 - (CAMAENIDAE)
- nigrescens, Cerithium nigrescens K.T. Menke, 1828 - syn of: Lampanella minima (J.F. Gmelin, 1791) - (CERITHIIDAE)
- nigrescens, Russatus nigrescens O.F. von Möllendorff - (CHAROPIDAE)
- nigrescens, Ryssota nigrescens O.F. von Möllendorff, 1898 - (CHRONIDAE)
- nigrescens, Conus nigrescens J.G. de Barros e Cunha, 1933 - syn of: Rhombiconus imperialis (C. Linnaeus, 1758) - (CONIDAE)
- nigrescens, Conus nigrescens G.B. II Sowerby, 1860 - syn of: Conus bandanus C.H. Hwass in J.G. Bruguière, 1792 - (CONIDAE)
- nigrescens, Cypraea nigrescens J.E. Gray, 1824 - syn of: Cypraea tigris C. Linnaeus, 1758 - (CYPRAEIDAE)
- nigrescens, Murex nigrescens G.B. II Sowerby, 1841 - syn of: Vokesimurex messorius (G.B. II Sowerby, 1841) - (MURICIDAE)
- nigrescens, Natica nigrescens C.B. Adams, 1850 - syn of: Natica livida L. Pfeiffer, 1840 - (NATICIDAE)
- nigrescens, Pleurodonte nigrescens (W. Wood, 1828) - (PLEURODONTIDAE)
- nigrescens, Crassispira nigrescens (C.B. Adams, 1845) - (PSEUDOMELATOMIDAE)
- nigrescens, Leiostracus coxeiranus nigrescens (S. Moricand, 1836) - (SIMPULOPSIDAE)
- nigrescens, Strictispira nigrescens L.A. Reeve, 1845 - syn of: Strictispira paxillus (L.A. Reeve, 1845) - (STRICTISPIRIDAE)
- nigrescens, Pleurotoma nigrescens L.A. Reeve, 1845 - syn of: Strictispira paxillus (L.A. Reeve, 1845) - (TURRIDAE)
- nigrescens, Pleurotoma nigrescens C.B. Adams, 1845 - syn of: Crassispira nigrescens (C.B. Adams, 1845) - (TURRIDAE)
- nigrescens, Anoma nigrescens (C.B. Adams, 1851) - (UROCOPTIDAE)
- nigrescens leucostoma, Anoma nigrescens leucostoma H.A. Pilsbry, 1903 - syn of: Anoma nigrescens (C.B. Adams, 1851) - (UROCOPTIDAE)
- nigrescens levior, Anoma nigrescens levior H.B. Baker, 1935 - syn of: Anoma nigrescens (C.B. Adams, 1851) - (UROCOPTIDAE)
- nigriadiata, Fissurella nigriadiata L.A. Reeve, 1850 - syn of: Diodora ruppelli (G.B. I Sowerby, 1835) - (FISSURELLIDAE)
- nigricans, Achatinella byronii nigricans H.A. Pilsbry & C.M. Cooke, 1913 - (ACHATINELLIDAE)
- nigricans, Mesanella nigricans (O.F. von Möllendorff, 1900) - (BRADYBAENIDAE)
- nigricans, Clea nigricans (A. Adams, 1855) - (BUCCINIDAE)
- nigricans, Cyerce nigricans (W.H. Pease, 1866) - (CALIPHYLLIDAE)
- nigricans, Camaena nigricans O.F. von Möllendorff, 1900 - (CAMAENIDAE)
- nigricans, Clausilia nigricans R. Pulteney, 1807 - (CLAUSILIIDAE)
- nigricans, Hemizaptyx nigricans H. Nordsieck, 1998 - (CLAUSILIIDAE)
- nigricans, Clausilia nigricans W.G. Maton & T. Rackett, 1807 - syn of: Clausilia bidentata (H. Strøm, 1765) - (CLAUSILIIDAE)
- nigricans, Parvanachis nigricans (G.B. II Sowerby, 1844) - (COLUMBELLIDAE)
- nigricans, Columbella nigricans G.B. II Sowerby, 1844 - syn of: Parvanachis nigricans (G.B. II Sowerby, 1844) - (COLUMBELLIDAE)
- nigricans, Vexillum deshayesii nigricans (P. Dautzenberg & J.L. Bouge, 1933) - (COSTELLARIIDAE)
- nigricans, Mauritia nigricans J.C.H. Crosse, 1869 - syn of: Mauritia eglantina (P.L. Duclos, 1833) - (CYPRAEIDAE)
- nigricans, Dendrodoris nigricans B.C. Otto, 1823 - syn of: Dendrodoris limbata (G.L.C.F.D. Cuvier, 1804) - (DENDRODORIDIDAE)
- nigricans, Doris nigricans J. Fleming, 1820 - syn of: Acanthodoris pilosa (P.C. Abildgaard in O.F. Müller, 1789) - (DORIDIDAE)
- nigricans, Doris nigricans B.C. Otto, 1823 - syn of: Dendrodoris limbata (G.L.C.F.D. Cuvier, 1804) - (DORIDIDAE)
- nigricans, Cernuella nigricans J.R. Bourguignat in É.A.A. Locard, 1894 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- nigricans, Discula nigricans R.T. Lowe, 1855 - syn of: Discula polymorpha (R.T. Lowe, 1831) - (HYGROMIIDAE)
- nigricans, Limapontia nigricans J.L.A. Quatrefages, 1844 - syn of: Limapontia capitata (O.F. Müller, 1774) - (LIMAPONTIIDAE)
- nigricans, Milax nigricans (R.A. Philippi, 1836) - (MILACIDAE)
- nigricans, Nebularia nigricans W.H. Pease, 1865 - syn of: Nebularia luctuosa A. Adams, 1853 - (MITRIDAE)
- nigricans, Clithon squarrosum nigricans E.C. Von Martens, 1878 - (NERITIDAE)
- nigricans, Onchidella nigricans (J.R.C. Quoy & J.P. Gaimard, 1832) - (ONCHIDIIDAE)
- nigricans, Onchidium nigricans J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Onchidella nigricans (J.R.C. Quoy & J.P. Gaimard, 1832) - (ONCHIDIIDAE)
- nigricans, Acanthodoris nigricans J. Fleming, 1828 - syn of: Acanthodoris pilosa (P.C. Abildgaard in O.F. Müller, 1789) - (ONCHIDORIDIDAE)
- nigricans, Paludomus nigricans L.A. Reeve, 1847 - (PALUDOMIDAE)
- nigricans, Helisoma nigricans (J.B. von Spix, 1827) - (PLANORBIDAE)
- nigricans, Planorbis nigricans J.B. von Spix, 1827 - syn of: Biomphalaria glabrata (T. Say, 1818) - (PLANORBIDAE)
- nigricans, Australorbis nigricans A. Lutz, 1919 - syn of: Biomphalaria tenagophila (A.V.M.D. D'Orbigny, 1835) - (PLANORBIDAE)
- nigricans, Crassispira nigricans W.H. Dall, 1919 - syn of: Crassispira maura (G.B. I Sowerby, 1834) - (PSEUDOMELATOMIDAE)
- nigricans, Pseudomonotis nigricans Stefanini, 1939 † - (PSEUDOMONOTIDAE) (FOSSIL)
- nigricans, Finella nigricans P. Bartsch & H.A. Rehder, 1939 - (SCALIOLIDAE)
- nigricans, Umbospira nigricans J. Perner, 1903 † - (SINUOPEIDAE) (FOSSIL)
- nigricans, Streptostyla nigricans (L. Pfeiffer, 1845) - (SPIRAXIDAE)
- nigricans, Strombus nigricans G. Perry, 1811 - syn of: Harpago arthriticus (P.F. Röding, 1798) - (STROMBIDAE)
- nigricans, Homorus kwidschwiensis nigricans H.A. Pilsbry, 1919 - (SUBULINIDAE)
- nigricans, Vasum nigricans G. Perry, 1811 - syn of: Vasum turbinellus (C. Linnaeus, 1758) - (TURBINELLIDAE)
- nigricans, Anodon nigricans P.M. Heude, 1877 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- nigricans, Unio nigricans L.I. Fitzinger, 1833 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- nigricans, Petaloconchus nigricans (W.H. Dall, 1884) - (VERMETIDAE)
- nigricans granulata, Clea nigricans granulata E.A. Smith, 1895 - syn of: Clea nigricans (A. Adams, 1855) - (BUCCINIDAE)
- nigricans maxima, Clea nigricans maxima A. Brot, 1881 - syn of: Clea nigricans (A. Adams, 1855) - (BUCCINIDAE)
- nigricans natunensis, Clea nigricans natunensis E.A. Smith, 1895 - syn of: Clea nigricans (A. Adams, 1855) - (BUCCINIDAE)
- nigricans parva, Retifusus nigricans parva A. Adams, 1855 - syn of: Clea nigricans (A. Adams, 1855) - (BUCCINIDAE)
- nigricans parva, Clea nigricans parva E.A. Smith, 1895 - syn of: Clea nigricans (A. Adams, 1855) - (BUCCINIDAE)
- nigriceps, Chrysallis nigriceps P. Bartsch - (BRADYBAENIDAE)
- nigricingulata, Mitromorpha nigricingulata M. Chino & P. Stahlschmidt, 2009 - (MITROMORPHIDAE)
- nigricollensis, Scaphites nigricollensis Cobban, 1951 † - (SCAPHITIDAE) (FOSSIL)
- nigricolor, Gymnodoris nigricolor K. Baba, 1960 - (GYMNODORIDIDAE)
- nigricolor, Turbonilla nigricolor (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- nigricolor, Chemnitzia nigricolor S. Nomura, 1936 - syn of: Turbonilla nigricolor (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- nigricolor, Tegula nigricolor R.W. Dunker, 1860 - syn of: Tegula xanthostigma A. Adams, 1853 - (TEGULIDAE)
- nigricolora, Catriona nigricolora (K. Baba, 1955) - (FIONIDAE)
- nigricostata, Columbella nigricostata E.A. Smith, 1878 - syn of: Anachis miser (G.B. II Sowerby, 1844) - (COLUMBELLIDAE)
- nigricostata, Anachis nigricostata E.A. Smith, 1878 - syn of: Anachis miser (G.B. II Sowerby, 1844) - (COLUMBELLIDAE)
- nigricostatum, Monostiolum nigricostatum (L.A. Reeve, 1846) - (BUCCINIDAE)
- nigricostatus, Caducifer nigricostatus L.A. Reeve, 1846 - syn of: Monostiolum nigricostatum (L.A. Reeve, 1846) - (BUCCINIDAE)
- Nigriculina, syn of: Genus Potadoma W.J. Swainson, 1840 (PACHYCHILIDAE)
- nigriculum, Chondropoma nigriculum (J. Gundlach, 1860) - (POMATIIDAE)
- nigrilabris, Pomacea nigrilabris R.A. Philippi, 1851 - syn of: Pomacea sordida (W.J. Swainson, 1823) - (AMPULLARIIDAE)
- nigrilabris, Auris bilabiata nigrilabris H.A. Pilsbry, 1896 - (BULIMULIDAE)
- nigrilabris, Helix nigrilabris E.C. Von Martens, 1869 - syn of: Xanthomelon spheroidea (E.J. Le Guillou, 1845) - (HELICIDAE)
- nigrimontanus, Discus nigrimontanus H.A. Pilsbry, 1924 - (DISCIDAE)
- nigrina, Mitra nigrina J.B.P.A. Lamarck, 1811 - syn of: Vexillum subdivisum (J.F. Gmelin, 1791) - (MITRIDAE)
- nigrina, Atrina nigrina J.B.P.A. Lamarck, 1819 - syn of: Atrina vexillum (I. von Born, 1778) - (PINNIDAE)
- nigrina, Crenatula nigrina J.B.P.A. Lamarck, 1819 - syn of: Crenatula picta (J.F. Gmelin, 1791) - (PTERIIDAE)
- nigrina, Juga nigrina (I. Lea, 1856) - (SEMISULCOSPIRIDAE)
- nigrina, Melania nigrina I. Lea, 1856 - syn of: Juga nigrina (I. Lea, 1856) - (THIARIDAE)
- nigrinodosum, Cerithium nigrinodosum F. Nordsieck, 1974 - syn of: Cerithium vulgatum J.G. Bruguière, 1792 - (CERITHIIDAE)
- nigrinum, Cerithium nigrinum R.A. Philippi, 1848 - syn of: Cerithium lutosum K.T. Menke, 1828 - (CERITHIIDAE)
- nigripicta, Achatinella apexfulva nigripicta D.A. Welch, 1942 - (ACHATINELLIDAE)
- nigripunctata, Haminoea nigripunctata W.H. Pease, 1868 - syn of: Haminoea nigropunctata W.H. Pease, 1868 - (HAMINOEIDAE)
- nigrirostratus, Fusinus nigrirostratus (E.A. Smith, 1879) - (FASCIOLARIIDAE)
- nigrirostratus, Fusus nigrirostratus E.A. Smith, 1879 - syn of: Fusinus nigrirostratus (E.A. Smith, 1879) - (FASCIOLARIIDAE)
- nigrispinis, Clithon nigrispinis R.P. Lesson, 1831 - (NERITIDAE)
- nigrispinosus, Murex nigrispinosus L.A. Reeve, 1845 - syn of: Murex ternispina J.B.P.A. Lamarck, 1822 - (MURICIDAE)
- nigrisquamata, Patella nigrisquamata L.A. Reeve, 1854 - syn of: Cellana mazatlandica (G.B. II Sowerby, 1839) - (PATELLIDAE)
- nigrita, Tutufella nigrita (H. Mühlhäusser & M. Blöcher, 1979) - (BURSIDAE)
- nigrita, Amblychilepas nigrita (Sowerby, 1835) - (FISSURELLIDAE)
- nigrita, Nerita nigrita (P.F. Röding, 1798) - (NERITIDAE)
- nigrita, Cymostyla nigrita P.F. Röding, 1798 - syn of: Nerita nigrita (P.F. Röding, 1798) - (NERITIDAE)
- nigrita, Synaptocochlea nigrita H.A. Rehder, 1939 - syn of: Synaptocochlea picta (A.V.M.D. D'Orbigny, 1847) - (TROCHIDAE)
- nigritella, Pusia nigritella P. Bartsch, 1918 - syn of: Pusia exaratum (A. Adams, 1853) - (COSTELLARIIDAE)
- nigritella, Peristernia nigritella (C.M. Tapparone-Canefri, 1882) - (FASCIOLARIIDAE)
- nigritella, Mitra nigritella P. Bartsch, 1918 - syn of: Pusia exaratum (A. Adams, 1853) - (MITRIDAE)
- nigritella, Trochomorpha nigritella (L. Pfeiffer, 1845) - (TROCHOMORPHIDAE)
- Nigritella, syn of: Genus Trochomorpha J.A. Albers, 1850 (TROCHOMORPHIDAE)
- nigritus, Hexaplex nigritus (R.A. Philippi, 1845) - (MURICIDAE)
- nigritus, Murex nigritus R.A. Philippi, 1845 - syn of: Hexaplex nigritus (R.A. Philippi, 1845) - (MURICIDAE)
- nigroapicatus, Drymaeus nigroapicatus L. Pfeiffer, 1857 - (BULIMULIDAE)
- nigrobalteatum, Cerithium nigrobalteatum E.A. Smith, 1884 - syn of: Cerithium balteatum R.A. Philippi, 1848 - (CERITHIIDAE)
- nigrobranchiata, Cadlina nigrobranchiata W.B. Rudman, 1985 - (CADLINIDAE)
- nigrobrunnea, Siphonalia nigrobrunnea Y.C. Lee & C. Chen, 2010 - (BUCCINIDAE)
- nigrobrunnea, Cassidula paludosa nigrobrunnea H.A. Pilsbry & Y. Hirase, 1905 - (ELLOBIIDAE)
- nigrocapitata, Elysia nigrocapitata K. Baba, 1957 - (PLAKOBRANCHIDAE)
- nigrocera, Doriopsilla nigrocera N. Yonow, 2012 - (DENDRODORIDIDAE)
- nigrocincta, Aplysia nigrocincta E.C. Von Martens - (APLYSIIDAE)
- nigrocincta, Lienardia nigrocincta (S.M. Souverbie & R.P. Montrouzier, 1873) - (CLATHURELLIDAE)
- nigrocincta, Erronea caurica nigrocincta F.A. Schilder, 1924 - (CYPRAEIDAE)
- nigrocincta, Fissurella nigrocincta P.P. Carpenter, 1856 - (FISSURELLIDAE)
- nigrocincta, Nerita versicolor nigrocincta G.W. Nowell-Usticke, 1959 - (NERITIDAE)
- nigrocincta, Marshallora nigrocincta (Adams, 1839) - (TRIPHORIDAE)
- nigrocingulata, Pseudodaphnella tincta nigrocingulata R.P.J. Hervier, 1897 - (RAPHITOMIDAE)
- nigrocostatus, Caducifer nigrocostatus L.A. Reeve, 1846 - syn of: Monostiolum nigricostatum (L.A. Reeve, 1846) - (BUCCINIDAE)
- nigrocrocea, Persicula nigrocrocea K.H. Barnard, 1969 - syn of: Plesiocystiscus aphanospira (J.R. le B. Tomlin, 1913) - (CYSTISCIDAE)
- nigrocrocea, Cystiscus nigrocrocea K.H. Barnard, 1969 - syn of: Plesiocystiscus aphanospira (J.R. le B. Tomlin, 1913) - (CYSTISCIDAE)
- nigrocrocea, Polycera nigrocrocea K.H. Barnard, 1927 - syn of: Polycera capensis J.R.C. Quoy & J.P. Gaimard, 1824 - (POLYCERIDAE)
- nigrofasciata, Grandinenia pseudofuchsi nigrofasciata H. Nordsieck, 2012 - (CLAUSILIIDAE)
- nigrofasciata, Pusia nigrofasciata G.B. Sowerby, 1874 - syn of: Pusia luculentum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- nigrofasciata, Polymita picta nigrofasciata C. de la Torre, 1950 - (HELMINTHOGLYPTIDAE)
- nigrofasciata, Clithon squarrosum nigrofasciata E.C. Von Martens, 1878 - (NERITIDAE)
- nigrofasciatum, Clypeomorus nigrofasciatum G.B. II Sowerby, 1865 - syn of: Clypeomorus bifasciata (G.B. II Sowerby, 1855) - (CERITHIIDAE)
- nigrofasciatum, Calaperostoma nigrofasciatum (K. Miller, 1879) - (NEOCYCLOTIDAE)
- nigrofasciatus, Drymaeus nigrofasciatus (L. Pfeiffer, 1846) - (BULIMULIDAE)
- nigrofasciatus elongatulus, Drymaeus nigrofasciatus elongatulus H.A. Pilsbry, 1898 - (BULIMULIDAE)
- nigrofusca, Seila nigrofusca C.F. Laseron, 1951 - (CERITHIOPSIDAE)
- nigrofusca, Anachis nigrofusca (P.P. Carpenter, 1857) - (COLUMBELLIDAE)
- nigrofusca, Pteria nigrofusca R.W. Dunker, 1872 - syn of: Pteria colymbus (P.F. Röding, 1798) - (PTERIIDAE)
- nigrofuscus, Dolicholatirus nigrofuscus R. Tate, 1891 - syn of: Dolicholatirus spiceri (J.E. Tenison-Woods, 1876) - (FASCIOLARIIDAE)
- nigrofuscus, Monophorus nigrofuscus (A. Adams, 1854) - (TRIPHORIDAE)
- nigrofuscus, Triphora nigrofuscus A. Adams, 1854 - syn of: Monophorus nigrofuscus (A. Adams, 1854) - (TRIPHORIDAE)
- nigrogranosa, Coriophora nigrogranosa C.F. Laseron, 1958 - syn of: Bouchetriphora aspergata (C.F. Laseron, 1958) - (TRIPHORIDAE)
- nigrogularis, Drymaeus nigrogularis W.L.H. Dohrn, 1882 - (BULIMULIDAE)
- nigrogularis ribeiroi, Drymaeus nigrogularis ribeiroi H.F.A. von Ihering, 1915 - (BULIMULIDAE)
- nigrolabris, Amastra spirizona nigrolabris E.A. Smith, 1873 - (AMASTRIDAE)
- nigrolabrus, Nassarius nigrolabrus (A.E. Verrill, 1880) - (NASSARIIDAE)
- nigrolimbata, Polymita picta nigrolimbata C. de la Torre, 1950 - (HELMINTHOGLYPTIDAE)
- nigrolimbatus, Drymaeus nigrolimbatus H.A. Pilsbry, 1898 - syn of: Stenostylus nigrolimbatus (L. Pfeiffer, 1853) - (BULIMULIDAE)
- nigrolimbatus, Bulimus nigrolimbatus L. Pfeiffer, 1853 - syn of: Stenostylus nigrolimbatus (L. Pfeiffer, 1853) - (BULIMULIDAE)
- nigrolimbatus, Stenostylus nigrolimbatus (L. Pfeiffer, 1853) - (ORTHALICIDAE)
- nigrolineata, Gaeotis nigrolineata R.J. Shuttleworth, 1854 - (AMPHIBULIMIDAE)
- nigrolineata, Hypselodoris nigrolineata (C.N.E. Eliot, 1904) - (CHROMODORIDIDAE)
- nigrolineata, Lyncina lynx nigrolineata L. Bozzetti, 2014 - (CYPRAEIDAE)
- nigrolineata, Doriopsilla nigrolineata K.B. Meyer, 1977 - (DENDRODORIDIDAE)
- nigrolineata, Littorina nigrolineata R.A. Philippi, 1846 - syn of: Littorina compressa J.G. Jeffreys, 1865 - (LITTORINIDAE)
- nigrolineata, Littorina nigrolineata J.E. Gray, 1839 - syn of: Littorina saxatilis (A.G. Olivi, 1792) - (LITTORINIDAE)
- nigrolineata, Cellana nigrolineata (L.A. Reeve, 1854) - (NACELLIDAE)
- nigrolineata, Patella nigrolineata Auct. - syn of: Cellana granostriata (L.A. Reeve, 1855) - (PATELLIDAE)
- nigrolineata, Polycera nigrolineata P. Dautzenberg & P. Durouchoux, 1913 - syn of: Polycera quadrilineata (O.F. Müller, 1776) - (POLYCERIDAE)
- nigrolineata divergens, Cellana nigrolineata divergens (H.A. Pilsbry, 1891) - (NACELLIDAE)
- nigrolineatum, Phos nigrolineatum T. Habe, 1961 - syn of: Antillophos nigroliratus (T. Habe, 1961) - (NASSARIIDAE)
- nigrolineatus, Africarion nigrolineatus G.A. de Mol, 1970 - (UROCYCLIDAE)
- nigroliratus, Antillophos nigroliratus (T. Habe, 1961) - (NASSARIIDAE)
- nigromaculata, Perrinia nigromaculata (M.M. Schepman, 1908) - (CHILODONTIDAE)
- nigromaculata, Lyncina porteri nigromaculata F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- nigromaculata, Dendrodoris nigromaculata (T.D.A. Cockerell in T.D.A. Cockerell & C.N.E. Eliot, 1905) - (DENDRODORIDIDAE)
- nigromaculata, Doto nigromaculata C.N.E. Eliot, 1906 - (DOTIDAE)
- nigromaculata, Emarginula nigromaculata (K.H.J. Thiele, 1930) - (FISSURELLIDAE)
- nigromaculata, Taiwannuculana nigromaculata (T.A. Okutani, 1983) - (MALLETIIDAE)
- nigromaculata, Falsilunatia nigromaculata (É. Lamy, 1911) - (NATICIDAE)
- nigromaculata, Tritonia nigromaculata I.S. Roginskaya, 1984 - (TRITONIIDAE)
- nigromaculata, Portlandia nigromaculata T.A. Okutani, 1983 - syn of: Taiwannuculana nigromaculata (T.A. Okutani, 1983) - (YOLDIIDAE)
- nigromaculatum, Perrinia nigromaculatum M.M. Schepman, 1908 - syn of: Perrinia nigromaculata (M.M. Schepman, 1908) - (CHILODONTIDAE)
- nigromaculatus, Pionoconus nigromaculatus (D. Röckel & R.G. Moolenbeek, 1992) - (CONIDAE)
- nigromaculatus, Pecten nigromaculatus W. Kobelt, 1888 - syn of: Coralichlamys madreporarum (G.B. II Sowerby, 1842) - (PECTINIDAE)
- nigromagnus, Pecten nigromagnus (F. Sacco, 1897 †) - (PECTINIDAE) (FOSSIL)
- nigromarginata, Aplysia nigromarginata A. Risso, 1818 - syn of: Aplysia punctata (G.L.C.F.D. Cuvier, 1803) - (APLYSIIDAE)
- nigromarginata, Gaimardia nigromarginata G.J. Pfeffer in E.C. Von Martens & G.J. Pfeffer, 1886 - syn of: Gaimardia trapesina (J.B.P.A. Lamarck, 1819) - (GAIMARDIIDAE)
- nigromarginata, Gaimardia nigromarginata L. Pfeiffer in E.C. Von Martens & L. Pfeiffer, 1886 - syn of: Gaimardia trapesina (J.B.P.A. Lamarck, 1819) - (GAIMARDIIDAE)
- nigromarginata, Ostrea nigromarginata G.B. II Sowerby, 1871 - syn of: Saccostrea echinata (J.R.C. Quoy & J.P. Gaimard, 1835) - (OSTREIDAE)
- nigromarginata, Pinctada nigromarginata W. Saville-Kent, 1893 - syn of: Pinctada margaritifera (C. Linnaeus, 1798) - (PTERIIDAE)
- nigromarginatum, Siphopteron nigromarginatum T.M. Gosliner, 1989 - (GASTROPTERIDAE)
- nigromontanus, Bulimulus nigromontanus W.H. Dall, 1897 - (BULIMULIDAE)
- nigronodosa, Cerithium vulgatum nigronodosa F. Nordsieck, 1974 - (CERITHIIDAE)
- nigropicta, Coryda nigropicta (R. Arango in F. Poey, 1867) - (CEPOLIDAE)
- nigropicta, Polycera nigropicta H.F.A. von Ihering, 1885 - syn of: Polycera quadrilineata (O.F. Müller, 1776) - (POLYCERIDAE)
- nigropictus, Microceramus nigropictus (J. Gundlach in L. Pfeiffer, 1863) - (UROCOPTIDAE)
- nigropictus guanensis, Microceramus nigropictus guanensis C. de la Torre & P. Bartsch, 2008 - (UROCOPTIDAE)
- nigropileatus, Bostryx nigropileatus L.A. Reeve, 1849 - (BULIMULIDAE)
- nigropunctata, Lucilina nigropunctata (P.P. Carpenter, 1865) - (CHITONIDAE)
- nigropunctata, Pseudozonaria nigropunctata (Gray, 1828) - (CYPRAEIDAE)
- nigropunctata, Cypraea nigropunctata J.E. Gray, 1828 - syn of: Pseudozonaria nigropunctata (Gray, 1828) - (CYPRAEIDAE)
- nigropunctata, Dendrodoris nigropunctata (A.J.B.M. Vayssière, 1912) - (DENDRODORIDIDAE)
- nigropunctata, Fissurella nigropunctata G.B. I Sowerby, 1835 - syn of: Fissurella virescens G.B. I Sowerby, 1835 - (FISSURELLIDAE)
- nigropunctata, Diodora nigropunctata K.H.J. Thiele, 1930 - syn of: Diodora jukesii (L.A. Reeve, 1850) - (FISSURELLIDAE)
- nigropunctata, Haminoea nigropunctata W.H. Pease, 1868 - (HAMINOEIDAE)
- nigropunctata, Mangelia nigropunctata E.C. Von Martens, 1885 - syn of: Falsimohnia albozonata (R.B. Watson, 1886) - (MANGELIIDAE)
- nigropunctata, Patella nigropunctata L.A. Reeve, 1854 - syn of: Patella rustica C. Linnaeus, 1758 - (PATELLIDAE)
- nigropunctata, Tricolia aquensis nigropunctata A.E.M. Cossmann & M.A. Peyrot, 1916 † - (PHASIANELLIDAE) (FOSSIL)
- nigropunctata, Elysia nigropunctata (W.H. Pease, 1871) - (PLAKOBRANCHIDAE)
- nigropunctatum, Vasticardium nigropunctatum T. Habe & S. Kosuge, 1966 - syn of: Vasticardium pectiniforme (I. von Born, 1780) - (CARDIIDAE)
- nigropunctatum, Cerithium nigropunctatum G.B. II Sowerby, 1855 - syn of: Cerithium scabridum R.A. Philippi, 1848 - (CERITHIIDAE)
- nigropunctatum, Sagaminopteron nigropunctatum C.H. Carlson & P.J. Hoff, 1973 - (GASTROPTERIDAE)
- nigropunctatus, Dermatobranchus nigropunctatus K. Baba, 1949 - (ARMINIDAE)
- nigropunctatus, Pionoconus nigropunctatus (G.B. II Sowerby, 1858) - (CONIDAE)
- nigropunctatus, Pleurobranchus nigropunctatus L.S.R. Bergh, 1907 - (PLEUROBRANCHIDAE)
- nigropunctatus, Infundibulum nigropunctatus L.A. Reeve, 1861 - (TROCHIDAE)
- nigropunctatus elatensis, Conus nigropunctatus elatensis E. Wils, 1971 - syn of: Pionoconus nigropunctatus (G.B. II Sowerby, 1858) - (CONIDAE)
- nigropunctatus hanleyanus, Infundibulum nigropunctatus hanleyanus (C.F.F. von Krauss, 1848) - (TROCHIDAE)
- nigrosquamosa, Patella nigrosquamosa R.W. Dunker, 1846 - (PATELLIDAE)
- nigrostriata, Hypselodoris nigrostriata (C.N.E. Eliot, 1904) - (CHROMODORIDIDAE)
- nigrostriatus, Conus nigrostriatus S. Kosuge, 1979 - syn of: Profundiconus lani (P.R. Crandall, 1979) - (CONIDAE)
- nigrostrigata, Amblychilepas nigrostrigata W.H. Turton, 1932 - syn of: Dendrofissurella scutellum hiantula (J.B.P.A. Lamarck, 1822) - (FISSURELLIDAE)
- nigrosulcata, Patelloida nigrosulcata (L.A. Reeve, 1855) - (LOTTIIDAE)
- nigrotincta, Lienardia nigrotincta S.M. Souverbie & R.P. Montrouzier, 1873 - syn of: Lienardia nigrocincta (S.M. Souverbie & R.P. Montrouzier, 1873) - (CLATHURELLIDAE)
- nigroumbilicatus, Drymaeus nigroumbilicatus H.B. Preston, 1907 - (BULIMULIDAE)
- nigroumbilicatus, Bostryx torallyi nigroumbilicatus J.J. Parodíz, 1947 - (BULIMULIDAE)
- nigrovirescens, Radsia nigrovirescens (H.M.D. de Blainville, 1825) - (CHITONIDAE)
- nigrovittata, Embletonia nigrovittata A. da Costa, 1866 - syn of: Ercolania viridis (A. da Costa, 1866) - (EMBLETONIIDAE)
- nigrovittata, Hero nigrovittata (A. da Costa, 1866) - (HEROIDAE)
- nigrovittata, Ercolania nigrovittata Surya Rao & Subba Rao, 1963 - syn of: Ercolania raorum (Er. Marcus & Ev. Marcus, 1970) - (LIMAPONTIIDAE)
- nigrozonata, Helix nigrozonata J.R. Bourguignat, 1883 - syn of: Helix lucorum C. Linnaeus, 1758 - (HELICIDAE)
- nigrozonata, Pleurotoma nigrozonata H.C. Weinkauff, 1876 - syn of: Clavus unizonalis (J.B.P.A. Lamarck, 1822) - (TURRIDAE)
- nigrozonatus, Clavus nigrozonatus H.C. Weinkauff & W. Kobelt, 1876 - syn of: Clavus protentus R.P.J. Hervier, 1896 - (DRILLIIDAE)
- nigrum, Bittium nigrum J.G. Totten, 1834 - syn of: Bittiolum alternatum (T. Say, 1822) - (CERITHIIDAE)
- nigrum, Cerithium nigrum R.A. Philippi, 1848 - syn of: Cerithium lutosum K.T. Menke, 1828 - (CERITHIIDAE)
- nigrum, Cerithium nigrum J.G. Totten, 1834 - syn of: Bittiolum alternatum (T. Say, 1822) - (CERITHIIDAE)
- nigrum, Ptychonema nigrum J. Perner, 1903 † - (EOTOMARIIDAE) (FOSSIL)
- nigrum, Peronia nigrum H.P. Plate, 1893 - syn of: Scaphis atra (R.P. Lesson, 1831) - (ONCHIDIIDAE)
- nihilfere, Turbonilla nihilfere A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- nihona, Pyrgiscus nihona Y. Otuka, 1935 - syn of: Turbonilla infantula W.H. Dall & P. Bartsch, 1906 - (PYRAMIDELLIDAE)
- Nihonia, Genus Nihonia F.S. MacNeil, 1960 (COCHLESPIRIDAE)
- nihonkaiensis, Alvania nihonkaiensis K. Hasegawa, 2014 - (RISSOIDAE)
- nihonkaiensis, Onchidiopsis nihonkaiensis T.A. Okutani & H. Numanami, 1993 - (VELUTINIDAE)
- niigataensis, Curtitoma niigataensis I.P. Bogdanov & K. Itô, 1992 - (MANGELIIDAE)
- niihauensis, Pleuropoma niihauensis M.C. Neal, 1934 - syn of: Pleuropoma niilauensis M.C. Neal, 1934 - (HELICINIDAE)
- niijimana, Coneuplecta niijimana H.A. Pilsbry & Y. Hirase, 1903 - (EUCONULIDAE)
- niilauensis, Pleuropoma niilauensis M.C. Neal, 1934 - (HELICINIDAE)
- niinoi, Ringicula niinoi S. Nomura, 1939 - (RINGICULIDAE)
- niissoni, Orthoceras niissoni Boll, 1857 † - (ORTHOCERATIDAE) (FOSSIL)
- niitakayama, Miralda niitakayama S. Nomura, 1938 - (PYRAMIDELLIDAE)
- nijimana, Coneuplecta nijimana H.A. Pilsbry & Y. Hirase, 1903 - (EUCONULIDAE)
- nikabitensis, Dieneroceras nikabitensis A.M. Popov, 1961 † - syn of: Rudolftruempyiceras demokidovi (A.M. Popov, 1961 †) - (COLUMBITIDAE) (FOSSIL)
- nikariae, Zonites nikariae G.J. Pfeffer, 1930 - (ZONITIDAE)
- nikchitchi, Diptychoceras nikchitchi Rouchadze, 1938 † - (PTYCHOCERATIDAE) (FOSSIL)
- Nikenautilus, Genus Nikenautilus Shimansky, 1957 (PSEUDONAUTILIDAE) (FOSSIL)
- nikiensis, Amphidromus contrarius nikiensis B. Rensch, 1931 - (CAMAENIDAE)
- nikiforovae, Cambridium nikiforovae Horný, 1957 † - (CAMBRIDIIDAE) (FOSSIL)
- nikiforovae, Richardsonoceras nikiforovae Balaschov † - (ONCOCERATIDAE) (FOSSIL)
- nikitai, Helix nikitai W. Kobelt, 1906 - syn of: Helix pomatia C. Linnaeus, 1758 - (HELICIDAE)
- nikitini, Euaspidoceras nikitini (Borrisjak, 1908 †) - (ASPIDOCERATIDAE) (FOSSIL)
- nikitini, Avicardium nikitini Andrussov † - (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- nikitini, Waagenoceras nikitini C. Gemmellaro, 1888 † - (CYCLOLOBIDAE) (FOSSIL)
- nikitini, Gzheloceras nikitini (Tzwetaev, 1888 †) - (GZHELOCERATIDAE) (FOSSIL)
- nikitini, Nautilus nikitini Tzwetaev, 1888 † - syn of: Gzheloceras nikitini (Tzwetaev, 1888 †) - (NAUTILIDAE) (FOSSIL)
- nikitini, Pleurotomaria nikitini Fliegel, 1901 † - (PLEUROTOMARIIDAE) (FOSSIL)
- nikitini, Olenekoceras nikitini (Mojsisovics, 1888 †) - (SIBIRITIDAE) (FOSSIL)
- Nikitinoceras, Genus Nikitinoceras Sokolov , 1913 (POLYPTYCHITIDAE) (FOSSIL)
- nikitinskii, Caspiohydrobia nikitinskii Y.I. Starobogatov & S.I. Andreeva, 1981 - (HYDROBIIDAE)
- nikitowkensis, Bakevellia nikitowkensis Y.M. Yakovlev, 1903 † - (BAKEVELLIIDAE) (FOSSIL)
- nikkoensis, Aegista nikkoensis J.T. Kuroda, 1934 - (BRADYBAENIDAE)
- nikkoensis, Stereophaedusa gouldi nikkoensis (O.F. von Möllendorff, 1885) - (CLAUSILIIDAE)
- nikkoensis, Helicarion nikkoensis E. Sorita & M. Kawana, 1983 - (HELICARIONIDAE)
- nikolaevi, Taskanites nikolaevi Bogoslovsky, 1969 † - syn of: Convoluticeras nikolaevi (Bogoslovsky, 1969 †) - (AGONIATITIDA (unassigned)) (FOSSIL)
- nikolaevi, Convoluticeras nikolaevi (Bogoslovsky, 1969 †) - (TEICHERTICERATIDAE) (FOSSIL)
- nikolaevi, Janaija nikolaevi Kurushin, 1987 † - (TRIGONODIDAE) (FOSSIL)
- nikolaewi, Aviculopecten nikolaewi Muromtseva, 1984 † - (AVICULOPECTINIDAE) (FOSSIL)
- nikolaewi, Kolymia nikolaewi Voronetz, 1936 † - syn of: Kolymia bulkurensis (Voronetz, 1936 †) - (KOLYMIIDAE) (FOSSIL)
- nikolai, Roboastra nikolai M. Pola, V. Padula, T.M. Gosliner & J.L. Cervera, 2014 - (POLYCERIDAE)
- nikolajevici, Romania nikolajevici (Š. Brusina, 1902 †) - (HYDROBIIDAE) (FOSSIL)
- nikolajewi, Atomodesma nikolajewi Voronetz, 1953 † - (ATOMODESMATIDAE) (FOSSIL)
- nikolarianae, Onoba nikolarianae J.J. Oberling, 1970 - (RISSOIDAE)
- nikolasi, Roboastra nikolasi M. Pola, V. Padula, T.M. Gosliner & J.L. Cervera, 2014 - syn of: Roboastra nikolai M. Pola, V. Padula, T.M. Gosliner & J.L. Cervera, 2014 - (POLYCERIDAE)
- Nikolenia, syn of: Genus Barskovia Golubev, 1976 (ALDANELLIDAE) (FOSSIL)
- nikolensis, Anisus nikolensis (W. Dybowski, 1913) - (PLANORBIDAE)
- nikolovi, Eleniceras nikolovi Breskovski, 1967 † - (NEOCOMITIDAE) (FOSSIL)
- nikolskii, Novlepatella nikolskii Y.I. Starobogatov & Mazaev, 1999 † - (DAMILINIDAE) (FOSSIL)
- nikolskii, Caspiohydrobia nikolskii Y.I. Starobogatov & S.I. Andreeva, 1981 - (HYDROBIIDAE)
- nikosi, Pyrgula nikosi D. Esu & O. Girotti, 2015 † - (HYDROBIIDAE) (FOSSIL)
- nilae, Melanella nilae W. Engl, 2006 - (EULIMIDAE)
- nilae, Planktomya nilae J.J. Van Aartsen & W. Engl, 2001 - (MONTACUTIDAE)
- nilae, Pusillina nilae C. Bogi & C. Chirli, 2004 † - (RISSOIDAE) (FOSSIL)
- nilagerica, Planispira nilagerica (L. Pfeiffer, 1845) - (CAMAENIDAE)
- nilagerica, Helix nilagerica L. Pfeiffer, 1845 - syn of: Planispira nilagerica (L. Pfeiffer, 1845) - (HELICIDAE)
- nilagirica, Mirus nilagirica L. Pfeiffer - (ENIDAE)
- nilagiricus, Cyclophorus nilagiricus (W.H. Benson, 1852) - (CYCLOPHORIDAE)
- nilarum, Skenea nilarum W. Engl, 1996 - (SKENEIDAE)
- Nilgiria, syn of: Genus Cryptozona O.A.L. Mφrch, 1872 (ARIOPHANTIDAE)
- nilgirica, Nicida nilgirica (W.T. Blanford & H.F. Blanford, 1860) - (DIPLOMMATINIDAE)
- nilgiricum, Opisthostoma nilgiricum W.T. Blanford & H.F. Blanford, 1860 - syn of: Nicida nilgirica (W.T. Blanford & H.F. Blanford, 1860) - (DIPLOMMATINIDAE)
- Nilobia, Genus Nilobia Strougo, 1977 (CARDIIDA (unassigned)) (FOSSIL)
- nilotica, Burtoa nilotica (L. Pfeiffer, 1861) - (ACHATINIDAE)
- nilotica, Borsonia nilotica Cuvillier, 1933 † - (BORSONIIDAE) (FOSSIL)
- nilotica, Corbicula nilotica S. Clessin, 1879 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- nilotica, Aetheria nilotica J.R. Bourguignat, 1880 - syn of: Etheria elliptica J.B.P.A. Lamarck, 1807 - (ETHERIIDAE)
- nilotica, Clavilithes nilotica Abbass, 1967 † - (FASCIOLARIIDAE) (FOSSIL)
- nilotica, Mutela nilotica J.C.H. Crosse, 1881 - syn of: Mutela soleniformis J.R. Bourguignat, 1885 - (IRIDINIDAE)
- nilotica, Iridina nilotica F. Cailliaud, 1823 - syn of: Mutela dubia J.F. Gmelin, 1793 - (IRIDINIDAE)
- nilotica, Heligmotoma nilotica Mayer-Eymar, 1895 † - (MELONGENIDAE) (FOSSIL)
- nilotica, Valvata nilotica C.F. Jickeli, 1874 - (VALVATIDAE)
- nilotica alluaudi, Mutela nilotica alluaudi J. Germain, 1909 - syn of: Mutela alluaudi J. Germain, 1909 - (IRIDINIDAE)
- nilotica emini, Burtoa nilotica emini E.C. Von Martens - (ACHATINIDAE)
- nilotica emini, Mutela nilotica emini E.C. Von Martens, 1899 - syn of: Mutela dubia J.F. Gmelin, 1793 - (IRIDINIDAE)
- nilotica obliqua, Burtoa nilotica obliqua E.C. Von Martens - (ACHATINIDAE)
- nilotica schweinfurthi, Burtoa nilotica schweinfurthi E.C. Von Martens, 1873 - syn of: Achatina schweinfurthi E.C. Von Martens, 1873 - (ACHATINIDAE)
- nilotica scioana, Valvata nilotica scioana C. Pollonera, 1888 - (VALVATIDAE)
- niloticiformis, Trochus niloticiformis (Schlotheim, 1820 †) - (TROCHIDAE) (FOSSIL)
- niloticum, Campanile niloticum Abbass, 1967 † - (CAMPANILIDAE) (FOSSIL)
- niloticus, Theodoxus niloticus L.A. Reeve, 1856 - (NERITIDAE)
- niloticus, Tectus niloticus (C. Linnaeus, 1767) - (TEGULIDAE)
- niloticus, Lyrodus niloticus (C. Linnaeus, 1767 †) - (TEREDINIDAE) (FOSSIL)
- niloticus, Trochus niloticus C. Linnaeus, 1767 - syn of: Tectus niloticus (C. Linnaeus, 1767) - (TROCHIDAE)
- niloticus, Unio niloticus G.B. Sowerby, 1868 - syn of: Diplodon granosus (J.G. Bruguière, 1792) - (UNIONIDAE)
- niloticus, Unio niloticus F. Cailliaud, 1823 - syn of: Coelatura aegyptiaca (F. Cailliaud, 1827) - (UNIONIDAE)
- niloticus maximus, Tectus niloticus maximus F.C.L. Koch, 1844 - syn of: Tectus maximus F.C.L. Koch, 1844 - (TEGULIDAE)
- nilotida, Olivella nilotida (P.L. Duclos, 1840 †) - (OLIVELLIDAE) (FOSSIL)
- nilotida, Oliva nilotida P.L. Duclos, 1840 † - syn of: Olivancillaria plicaria (J.B.P.A. Lamarck, 1810 †) - (OLIVIDAE) (FOSSIL)
- nilsi, Gibberula nilsi J. Espinosa & J.A. Ortea, 2007 - (CYSTISCIDAE)
- Nilsia, Genus Nilsia H.J. Finlay, 1927 (VANIKORIDAE)
- nilsodhneri, Tritonia nilsodhneri Ev. Marcus, 1983 - (TRITONIIDAE)
- nilssoni, Achatina nilssoni A.W. Malm, 1851 - syn of: Cochlicopa lubrica (O.F. Müller, 1774) - (ACHATINIDAE)
- nilssoni, Ammonites nilssoni Hebert, 1866 † - syn of: Calliphylloceras nilssoni (Hebert, 1866 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- nilssoni, Cultrigera nilssoni (J. Müller, 1851 †) - (APORRHAIDAE) (FOSSIL)
- nilssoni, Arion nilssoni C. Pollonera, 1887 - syn of: Carinarion fasciatus (S. Nilsson, 1823) - (ARIONIDAE)
- nilssoni, Nilssonoceras nilssoni (Boll, 1857 †) - (GEISONOCERATIDAE) (FOSSIL)
- nilssoni, Modiolopsis nilssoni (Hisinger, 1837 †) - (MODIOMORPHIDAE) (FOSSIL)
- nilssoni, Orthoceras nilssoni Boll, 1857 † - syn of: Nilssonoceras nilssoni (Boll, 1857 †) - (ORTHOCERATIDAE) (FOSSIL)
- nilssoni, Pecten nilssoni G.A. Goldfuss, 1836 † - (PECTINIDAE) (FOSSIL)
- nilssoni, Calliphylloceras nilssoni (Hebert, 1866 †) - (PHYLLOCERATIDAE) (FOSSIL)
- nilssoni, Gemmula nilssoni (G.P. Deshayes, 1865 †) - (TURRIDAE) (FOSSIL)
- nilssonii, Anodonta nilssonii H.C. Küster, 1842 - syn of: Anodonta anatina (C. Linnaeus, 1758) - (UNIONIDAE)
- Nilssonoceras, Genus Nilssonoceras Kroeger, 2004 (GEISONOCERATIDAE) (FOSSIL)
- nimapuna, Anguispira nimapuna H.B. Baker, 1932 - (DISCIDAE)
- nimassicus, Pachymegalodon nimassicus (Krumbeck, 1923 †) - (PACHYRISMATIDAE) (FOSSIL)
- nimbae, Afropomus balanoideus nimbae E.E. Binder, 1963 - (AMPULLARIIDAE)
- nimbaensis, Zonitarion nimbaensis G.A. de Mol, 1970 - (UROCYCLIDAE)
- nimberlinus, Prymnbriareus nimberlinus G.A. Solem, 1981 - (CAMAENIDAE)
- nimbifer, Lima nimbifer T. Iredale, 1924 - (LIMIDAE)
- nimbifer gemina, Lima nimbifer gemina T. Iredale, 1929 - syn of: Lima nimbifer T. Iredale, 1924 - (LIMIDAE)
- Nimboconus, Genus Nimboconus J.K. Tucker & M.J. Tenorio, 2013 (CONIDAE)
- nimbosa, Helicostyla nimbosa W.J. Broderip, 1841 - (BRADYBAENIDAE)
- nimbosa, Euhadra peliomphala nimbosa (J.C.H. Crosse, 1868) - (BRADYBAENIDAE)
- nimbosa, Potamocorbula nimbosa (S.C.T. Hanley, 1843) - (CORBULIDAE)
- nimbosa, Corbula nimbosa S.C.T. Hanley, 1843 - syn of: Potamocorbula nimbosa (S.C.T. Hanley, 1843) - (CORBULIDAE)
- nimbosa, Pustularia nimbosa L.W. Dillwyn, 1827 - syn of: Pustularia bistrinotata F.A. Schilder & M. Schilder, 1937 - (CYPRAEIDAE)
- nimbosa, Erodona nimbosa R.B. Hinds, 1843 - syn of: Erodona mactroides F.M. Daudin, 1802 - (ERODONIDAE)
- nimbosa, Fissurella nimbosa (C. Linnaeus, 1758) - (FISSURELLIDAE)
- nimbosa, Cremides nimbosa K.H.J. Thiele, 1891 - syn of: Fissurella alabastrites L.A. Reeve, 1849 - (FISSURELLIDAE)
- nimbosa, Marginella nimbosa S.G. Veldsman, 2013 - (MARGINELLIDAE)
- nimbosa, Nucula nimbosa B. Prashad, 1932 - syn of: Nucula semen K.H.J. Thiele & S.G.A. Jaeckel, 1931 - (NUCULIDAE)
- nimbosa, Testudovolva nimbosa C.N. Cate, 1978 - syn of: Testudovolva nebula (M. Azuma & C.N. Cate, 1971) - (OVULIDAE)
- nimbosa, Terebra nimbosa R.B. Hinds, 1844 - syn of: Hastula hectica (C. Linnaeus, 1758) - (TEREBRIDAE)
- nimbosa, Macrocallista nimbosa (D.C. Solander, 1786) - (VENERIDAE)
- nimbosa, Venus nimbosa J. Lightfoot, 1786 - syn of: Macrocallista nimbosa (D.C. Solander, 1786) - (VENERIDAE)
- nimbosa antiqua, Helicostyla nimbosa antiqua (P. Bartsch, 1919) - (BRADYBAENIDAE)
- nimbosus, Nimboconus nimbosus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- nimbus, Olympus nimbus L.R.L. Simone, 2010 - (CAMAENIDAE)
- nimbus, Oreokera nimbus J. Stanisic, 1987 - (CHAROPIDAE)
- nimbus, Patella nimbus L.A. Reeve, 1855 - syn of: Cellana radiata (I. von Born, 1778) - (PATELLIDAE)
- nimia, Amnicola nimia H.A. Pilsbry, 1917 - (AMNICOLIDAE)
- nimiproba, Erronea nimiproba T. Iredale, 1935 - syn of: Erronea errones (C. Linnaeus, 1758) - (CYPRAEIDAE)
- nimiserrans, Erronea nimiserrans W.R. Steadman & B.C. Cotton, 1943 - syn of: Erronea errones (C. Linnaeus, 1758) - (CYPRAEIDAE)
- nimrodiana, Kellia nimrodiana (C. Hedley, 1911) - (KELLIIDAE)
- nimrodiana, Montacuta nimrodiana C. Hedley, 1911 - syn of: Kellia nimrodiana (C. Hedley, 1911) - (MONTACUTIDAE)
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