- homadensis, Rossmaessleria homadensis (J. Rutllant, 1974) - (HELICIDAE)
- homadensis, Helicella homadensis (J. Rutlant Basset, 1874) - (HYGROMIIDAE)
- homadensis intermedia, Rossmaessleria homadensis intermedia J. Ahuir, 1990 - (HELICIDAE)
- homaeotata, Clathurella homaeotata R.B. Watson, 1886 - syn of: Gymnobela homaeotata (R.B. Watson, 1886) - (CLATHURELLIDAE)
- homaeotata, Pyrgiscilla homaeotata R.B. Watson, 1886 - syn of: Gymnobela homaeotata (R.B. Watson, 1886) - (PYRAMIDELLIDAE)
- homaeotata, Gymnobela homaeotata (R.B. Watson, 1886) - (RAPHITOMIDAE)
- homala, Rupestrella homala (C.A. Westerlund, 1892) - (CHONDRINIDAE)
- homala, Limopsis homala A.E.M. Cossmann, 1906 † - (LIMOPSIDAE) (FOSSIL)
- Homala, syn of: Genus Omala H.C.F. Schumacher, 1817 (TELLINIDAE)
- homala, Hastula homala W.P. Woodring, 1928 † - (TEREBRIDAE) (FOSSIL)
- homala, Trivellona homala Fehse, 2017 - (TRIVIIDAE)
- homala falkneri, Rupestrella homala falkneri J. Beckmann, 2002 - (CHONDRINIDAE)
- homala massae, Rupestrella homala massae J. Beckmann, 2002 - (CHONDRINIDAE)
- Homalacantha, syn of: Genus Homalocantha O.A.L. Mφrch, 1852 (MURICIDAE)
- Homalapoma, syn of: Genus Homalopoma P.P. Carpenter, 1864 (COLLONIIDAE)
- homalaxis, Torinia homalaxis J.C. Melvill, 1893 - syn of: Heliacus implexus (J.W. Mighels, 1845) - (ARCHITECTONICIDAE)
- Homalia, Subgenus Melanopsis (Homalia) Handmann, 1887 (MELANOPSIDAE) (FOSSIL)
- Homalina, Subgenus Tellina (Homalina) F. Stoliczka, 1870 (TELLINIDAE)
- Homalocantha, Genus Homalocantha O.A.L. Mφrch, 1852 (MURICIDAE)
- Homaloceras, Genus Homaloceras Whiteaves, 1891 (CENTROCERATIDAE) (FOSSIL)
- homalogaster, Cadomites homalogaster Buckman † - (STEPHANOCERATIDAE) (FOSSIL)
- Homalogyra, syn of: Genus Omalogyra J.G. Jeffreys, 1860 (OMALOGYRIDAE)
- homalogyra, Valvata homalogyra Š. Brusina, 1874 † - (VALVATIDAE) (FOSSIL)
- homalogyrus, Obeliscus homalogyrus (R.J. Shuttleworth in L. Pfeiffer, 1851) - (SUBULINIDAE)
- homalogyrus zaza, Obeliscus homalogyrus zaza H.A. Pilsbry, 1906 - (SUBULINIDAE)
- homalon, Cyclostrema homalon J.C. Verco, 1907 - syn of: Circulus harriettae (W.F. Petterd, 1884) - (LIOTIIDAE)
- Homalonyx, syn of: Genus Omalonyx D'Orbigny, 1841 (SUCCINEIDAE)
- Homalopoma, Genus Homalopoma P.P. Carpenter, 1864 (COLLONIIDAE)
- homalorhaphe, Albinaria candida homalorhaphe (L. Pfeiffer, 1850) - (CLAUSILIIDAE)
- homalosomus, Gyraulus homalosomus (Š. Brusina, 1902) - (PLANORBIDAE)
- homalosomus rhytidophorus, Gyraulus homalosomus rhytidophorus Š. Brusina, 1902 - syn of: Gyraulus rhytidophorus (Š. Brusina, 1902 ) - (PLANORBIDAE)
- homalospira, Monachoides homalospira (A.E. Reuss, 1861 †) - (HYGROMIIDAE) (FOSSIL)
- homalostriata, Diplodonta homalostriata W.P. Woodring, 1925 † - (UNGULINIDAE) (FOSSIL)
- homalotaenius, Bellerophon homalotaenius Radabaugh, 1942 † - syn of: Bellerophon pelops J.W. Hall, 1862 † - (BELLEROPHONTIDAE) (FOSSIL)
- Homaloteuthis, Genus Homaloteuthis Stolley, 1919 (BELEMNITIDA (UNASSIGNED)) (FOSSIL)
- homalotropis, Bucaniella homalotropis E.F.R.K. Koken, 1897 † - syn of: Bucanella homalotropis (E.F.R.K. Koken, 1897 †) - (BELLEROPHONTIDAE) (FOSSIL)
- homalotropis, Bucanella homalotropis (E.F.R.K. Koken, 1897 †) - (BUCANELLIDAE) (FOSSIL)
- homannulata, Alaina homannulata Ruan, 1985 † - (CRASSILINIDAE) (FOSSIL)
- Homatoma, syn of: Genus Raphitoma L.M.D. Bellardi, 1847 (RAPHITOMIDAE)
- hombergi, Favorinus hombergi G.L.C.F.D. Cuvier, 1803 - syn of: Tritonia hombergii G.L.C.F.D. Cuvier, 1803 - (FACELINIDAE)
- hombergii, Tritonia hombergii G.L.C.F.D. Cuvier, 1803 - (TRITONIIDAE)
- hombouyi, Horologica hombouyi Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- hombroni, Chloritis quercina hombroni L. Pfeiffer, 1860 - (CAMAENIDAE)
- hombroni, Fusus hombroni R.A. Philippi, 1855 - syn of: Pareuthria magellanica (R.A. Philippi, 1848) - (FASCIOLARIIDAE)
- hombroni, Paraperonia gondwanae hombroni (A. Labbé, 1934) - (ONCHIDIIDAE)
- hombroni, Patella hombroni P. Dautzenberg & J.L. Bouge, 1933 - syn of: Cellana radiata (I. von Born, 1778) - (PATELLIDAE)
- hombroni, Gemmula hombroni C. Hedley, 1922 - (TURRIDAE)
- Hombronula, syn of: Genus Papuina E.C. Von Martens, 1860 (CAMAENIDAE)
- Homeochiton, Genus Homeochiton Hanger & al., 2000 (HANLEYIDAE) (FOSSIL)
- homeotata, Clathurella homeotata R.B. Watson, 1886 - syn of: Gymnobela homeotata (R.B. Watson, 1886) - (CLATHURELLIDAE)
- homeotata, Gymnobela homeotata (R.B. Watson, 1886) - (RAPHITOMIDAE)
- homephila, Candidula homephila J.R. Bourguignat - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- homerica, Helix homerica E.C. Von Martens, 1889 - (HELICIDAE)
- homerica, Setia homerica L. Romani & D. Scuderi, 2015 - (RISSOIDAE)
- Homerites, Genus Homerites Homerites (TROPITIDAE) (FOSSIL)
- Homeroceras, Genus Homeroceras Tozer, 1994 (TROPITIDAE) (FOSSIL)
- homevalensis, Streblopteria homevalensis C.O. Waterhouse, 1986 † - (DELTOPECTINIDAE) (FOSSIL)
- homeveri, Albea homeveri (W.L.H. Dohrn & D.F. Heynemann, 1862) - (SPHINCTEROCHILIDAE)
- homeyeri, Amandana homeyeri (W.L.H. Dohrn & D.F. Heynemann, 1862) - (HYGROMIIDAE)
- homfrayi, Actinodonta homfrayi Hicks, 1873 † - syn of: Actinodonta ramseyensis (Hicks, 1873 †) - (ACTINODONTIDAE) (FOSSIL)
- homfrayi, Ammonites homfrayi W.M. Gabb, 1864 † - syn of: Sirenites homfrayi (W.M. Gabb, 1864 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- homfrayi, Modiolopsis homfrayi Hicks, 1873 † - syn of: Actinodonta ramseyensis (Hicks, 1873 †) - (MODIOMORPHIDAE) (FOSSIL)
- homfrayi, Mytilus homfrayi W.M. Gabb, 1864 † - (MYTILIDAE) (FOSSIL)
- homfrayi, Avicula homfrayi W.M. Gabb, 1864 † - (PTERIIDAE) (FOSSIL)
- homfrayi, Sirenites homfrayi (W.M. Gabb, 1864 †) - (TRACHYCERATIDAE) (FOSSIL)
- homhilensis, Achatinelloides homhilensis (E.A. Smith, 1899) - (CERASTUIDAE)
- homhillensis, Achatinelloides homhillensis E.A. Smith, 1899 - syn of: Achatinelloides homhilensis (E.A. Smith, 1899) - (CERASTUIDAE)
- Homilodonta, Genus Homilodonta Cope, 1997 (PRAENUCULIDAE) (FOSSIL)
- HOMINIDAE Gray, 1825 - Family (Mammalia-Primates [Order]-Haplorhini [SubOrder]-Similiformes [InfraOrder]) (FOSSIL)
- hommungensis, Pyrgulina hommungensis E. Saurin, 1959 - (PYRAMIDELLIDAE)
- Homo, Genus Homo Linnaeus, 1758 (Hominidae)
- Homoadelphoceras, Genus Homoadelphoceras Foerste, 1926 (RUTOCERATIDAE) (FOSSIL)
- Homoceras, Genus Homoceras Sepkoski Jr., 2002 (HOMOCERATIDAE) (FOSSIL)
- HOMOCERATIDAE Spath, 1934 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-GASTRIOCERATOIDEA [Superfamily]) (FOSSIL)
- Homoceratoides, Genus Homoceratoides Bisat , 1924 (RAMOSITIDAE) (FOSSIL)
- homochroa, Lienardia homochroa C. Hedley, 1922 - syn of: Hemilienardia homochroa (C. Hedley, 1922) - (CLATHURELLIDAE)
- homochroa, Hemilienardia homochroa (C. Hedley, 1922) - (RAPHITOMIDAE)
- homocostata, Intortia homocostata E.N. Egorova, 1972 - syn of: Lissotesta similis (K.H.J. Thiele, 1912) - (TROCHIDAE)
- HOMOCTENIDAE Lyashenko, 1955 - Family (TENTACULITA-CHONIOCONARIDA [Subclass]-LIRIOCONARIDA [Superorder]-HOMOCTENIDA [Order]) (FOSSIL)
- Homoctenoides, Genus Homoctenoides Wang Jinxing & Huang Xiaomei, 1990 (TENTACULITA (UNASSIGNED)) (FOSSIL)
- Homoctenowakia, Genus Homoctenowakia Alberti, 1984 (PARANOWAKIIDAE) (FOSSIL)
- Homoctenus, Genus Homoctenus Lyashenko , 1955 (HOMOCTENIDAE) (FOSSIL)
- Homoeodesma, syn of: Genus Thracia W.E. Leach in H.M.D. De Blainville, 1824 (THRACIIDAE)
- Homoeodesma, syn of: Genus Thracia W.E. Leach in H.M.D. De Blainville, 1824 (THRACIIDAE)
- Homoeodoris, syn of: Genus Homoiodoris L.S.R. Bergh, 1882 (DORIDIDAE)
- Homoeoplanulites, Genus Homoeoplanulites Buckman, 1922 (PERISPHINCTIDAE) (FOSSIL)
- homoeotata, Turbonilla homoeotata (R.B. Watson, 1886) - (PYRAMIDELLIDAE)
- Homoiodoris, Genus Homoiodoris L.S.R. Bergh, 1882 (DORIDIDAE)
- homoleuca, Xeropicta homoleuca (Š. Brusina, 1870) - (HYGROMIIDAE)
- Homolocantha, syn of: Genus Homalocantha O.A.L. Mφrch, 1852 (MURICIDAE)
- homologum, Cerithium homologum C.É. Bayle, 1880 - (CERITHIIDAE)
- Homolsomites, Genus Homolsomites Crickmay, 1930 (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- Homomya, Genus Homomya Agassiz, 1843 (PHOLADOMYIDAE) (FOSSIL)
- Homorus, Genus Homorus J.A. Albers, 1850 (SUBULINIDAE)
- Homotoma, syn of: Genus Raphitoma L.M.D. Bellardi, 1847 (RAPHITOMIDAE)
- Homoxynoticeras, syn of: Genus Radstockiceras D'Orbigny, 1844 (OXYNOTICERATIDAE) (FOSSIL)
- Homoya, Genus Homoya Agassiz, 1843 (PHOLADOMYIDAE) (FOSSIL)
- homsensis, Margaritifera homsensis (I. Lea, 1865) - (MARGARITIFERIDAE)
- homsensis, Gyraulus homsensis (P. Dautzenberg, 1894) - (PLANORBIDAE)
- homsensis, Unio homsensis I. Lea, 1865 - syn of: Margaritifera homsensis (I. Lea, 1865) - (UNIONIDAE)
- hondana, Cerion hondana H.A. Pilsbry, 1902 - (CERIONIDAE)
- hondana, Stereophaedusa hondana H.A. Pilsbry, 1901 - (CLAUSILIIDAE)
- hondana, Pusia hondana M. Yokoyama, 1922 - syn of: Microvoluta hondana (M. Yokoyama, 1922) - (COSTELLARIIDAE)
- hondana, Mitra hondana M. Yokoyama, 1922 - syn of: Microvoluta hondana (M. Yokoyama, 1922) - (MITRIDAE)
- hondana, Sarasinella hondana F. Haas, 1960 † - (NEOCOMITIDAE) (FOSSIL)
- hondana, Microvoluta hondana (M. Yokoyama, 1922) - (VOLUTOMITRIDAE)
- hondanum, Cerion mumia hondanum H.A. Pilsbry, 1902 - (CERIONIDAE)
- hondensis, Potamides hondensis A.A. Olsson, 1931 † - (POTAMIDIDAE) (FOSSIL)
- hondoana, Turricula hondoana W.H. Dall, 1925 - syn of: Aforia circinata (W.H. Dall, 1873) - (CLAVATULIDAE)
- hondoana, Aforia hondoana W.H. Dall, 1925 - syn of: Aforia circinata (W.H. Dall, 1873) - (COCHLESPIRIDAE)
- hondoana, Microvoluta hondoana M. Yokoyama, 1922 - syn of: Microvoluta hondana (M. Yokoyama, 1922) - (VOLUTOMITRIDAE)
- hondoensis, Retimohnia hondoensis (W.H. Dall, 1913) - (BUCCINIDAE)
- hondoensis, Calliotropis hondoensis W.H. Dall, 1919 - (CALLIOTROPIDAE)
- hondoensis, Glyptoactis charanalensis hondoensis Clark & J.W. Durham, 1946 - (CARDITIDAE)
- hondoensis, Turritella salchica hondoensis Clark & J.W. Durham, 1946 - (TURRITELLIDAE)
- hondurana, Tristramia hondurana H.G. Richards, 1938 - (HELICINIDAE)
- honduranus, Drymaeus honduranus E.C. Von Martens, 1893 - (BULIMULIDAE)
- hondurasanus, Mesembrinus hondurasanus (L. Pfeiffer, 1846) - (BULIMULIDAE)
- hondurasense, Prunum hondurasense L.A. Reeve, 1865 - syn of: Prunum pulchrum (J.E. Gray, 1839) - (MARGINELLIDAE)
- hondurasensis, Ampullaria hondurasensis L.A. Reeve, 1856 - syn of: Pomacea flagellata (T. Say, 1829) - (AMPULLARIIDAE)
- hondurasensis, Fissurella hondurasensis L.A. Reeve, 1849 - syn of: Fissurella maxima Sowerby, 1835 - (FISSURELLIDAE)
- hondurasensis, Marginella hondurasensis L.A. Reeve, 1865 - syn of: Prunum pulchrum (J.E. Gray, 1839) - (MARGINELLIDAE)
- hondurasensis, Biomphalaria hondurasensis (S. Clessin, 1878) - (PLANORBIDAE)
- hondurasensis, Crassispira hondurasensis (L.A. Reeve, 1846) - (PSEUDOMELATOMIDAE)
- hondurasensis, Solariorbis hondurasensis (E.G. Vanatta, 1913) - (TORNIDAE)
- hondurasiensis, Terebra hondurasiensis R. Gargiulo, 2016 - (TEREBRIDAE)
- honduratianus, Drymaeus honduratianus H.B. Tristram, 1861 - (BULIMULIDAE)
- honensis, Anadara honensis A.A. Olsson, 1922 † - (ARCIDAE) (FOSSIL)
- honensis, Fusinus honensis A.A. Olsson, 1922 † - (FASCIOLARIIDAE) (FOSSIL)
- honensis adiaphora, Anadara honensis adiaphora W.P. Woodring, 1973 - (ARCIDAE)
- Honeoyea, Genus Honeoyea Clarke, 1904 (LUNULACARDIIDAE) (FOSSIL)
- honessi, Girtyana honessi Elias 1956 † - (NUCULANIDAE) (FOSSIL)
- honesta, Macrochlamys honesta (A.A. Gould) - (ARIOPHANTIDAE)
- honesta, Caucasipupa honesta A.N. Suvorov, A.A. Schileyko, 1991 - (LAURIIDAE)
- honesta, Mitra honesta J.C. Melvill & R. Standen, 1895 - syn of: Pusia chelonia (L.A. Reeve, 1845) - (MITRIDAE)
- honestum, Vexillum honestum J.C. Melvill & R. Standen, 1895 - syn of: Pusia chelonia (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- honestum, Rhytidopoma honestum (F. Poey, 1851) - (POMATIIDAE)
- honestum barroi, Rhytidopoma honestum barroi C.G. Aguayo & M.L. Jaume, 1945 - (POMATIIDAE)
- honestum itinerans, Rhytidopoma honestum itinerans C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- honestum nodiferum, Rhytidopoma honestum nodiferum (R. Arango, 1881) - (POMATIIDAE)
- Honeymania, syn of: Genus Cardiolaria Munier , 1876 (CARDIOLARIIDAE) (FOSSIL)
- hongdaoae, Amphidromus hongdaoae Thach, 2017 - (CAMAENIDAE)
- honghuadianensis, Shaanxiconcha honghuadianensis H.X. Liu & Li, 1980 † - (SHAANXICONCHIDAE) (FOSSIL)
- hongii, Placostylus hongii (R.P. Lesson, 1830) - (BOTHRIEMBRYONTIDAE)
- hongkongense, Onchidium hongkongense J.C.Jr. Britton, 1984 - (ONCHIDIIDAE)
- hongkongensis, Babylonia hongkongensis K.Y. Lai & H. Guo, 2010 - syn of: Babylonia spirata (C. Linnaeus, 1758) - (BABYLONIIDAE)
- hongkongensis, Bradybaena similaris hongkongensis G.P. Deshayes, 1873 - (BRADYBAENIDAE)
- hongkongensis, Kaliella hongkongensis O.F. von Möllendorff - (CHRONIDAE)
- hongkongensis, Limaria hongkongensis B.S. Morton, 1979 - (LIMIDAE)
- hongkongensis, Octopus hongkongensis W.E. Hoyle, 1885 - (OCTOPODIDAE)
- hongkongensis, Crassostrea hongkongensis D. Lam & B.S. Morton, 2003 - (OSTREIDAE)
- hongkongensis, Taranidaphne hongkongensis (G.B. III Sowerby, 1889) - (RAPHITOMIDAE)
- hongkongensis, Angulaticeras hongkongensis A.W. Grabau 1923 † - (SCHLOTHEIMIIDAE) (FOSSIL)
- hongkongensis, Semisulcospira hongkongensis (A. Brot, 1874) - (SEMISULCOSPIRIDAE)
- hongkongensis, Pleurotoma hongkongensis G.B. III Sowerby, 1889 - syn of: Taranidaphne hongkongensis (G.B. III Sowerby, 1889) - (TURRIDAE)
- hongkongensis, Laevicirce hongkongensis (L.Y. Jiang & F.S. Xu, 1992) - (VENERIDAE)
- hongkongiensis, Noumea hongkongiensis W.B. Rudman, 1990 - (CHROMODORIDIDAE)
- hongoensis, Nassarius hongoensis Itoigawa, 1955 † - (NASSARIIDAE) (FOSSIL)
- Hongolua, syn of: Genus Hogolua F.C. Baker, 1941 (TROCHOMORPHIDAE)
- Hongshuiheites, Genus Hongshuiheites Yang & Xiong, 1990 (ARAXOCERATIDAE) (FOSSIL)
- hongthinhae, Perrottetia hongthinhae D.-S. Do, 2017 - (STREPTAXIDAE)
- honguedoensis, Montanaria honguedoensis Desbiens 1994 † - (MONTANARIIDAE) (FOSSIL)
- honiara, Turbonilla honiara A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- honii, Siciliaria gibbula honii (N. Tiberi, 1878) - (CLAUSILIIDAE)
- honis, Odostomia honis E. Saurin, 1959 - (PYRAMIDELLIDAE)
- honkakujiana, Takasagovolva honkakujiana (J.T. Kuroda, 1928) - (OVULIDAE)
- honkeri, Attenuiconus honkeri (E.J. Petuch, 1988) - (CONIDAE)
- honkeri, Bullockus honkeri (M.A. Snyder, 2006) - (FASCIOLARIIDAE)
- honkeri, Mitra honkeri G.T. Poppe, S.P. Tagaro & R. Salisbury, 2009 - (MITRIDAE)
- honkeri, Muricopsis honkeri E.J. Petuch, 2013 - (MURICIDAE)
- honkerorum, Gradiconus honkerorum E.J. Petuch & B.W. Myers, 2014 - (CONIDAE)
- honkerorum, Modulus honkerorum E.J. Petuch, 2013 - (MODULIDAE)
- honloni, Phyllidia honloni J.J. Risbec, 1956 - syn of: Phyllidia varicosa J.B.P.A. Lamarck, 1801 - (PHYLLIDIIDAE)
- honmai, Cymatoceras honmai E. Matsumoto & S. Miyauchi, 1983 † - (CYMATOCERATIDAE) (FOSSIL)
- honmungensis, Pyrgulina honmungensis E. Saurin, 1959 - (PYRAMIDELLIDAE)
- honnorati, Pseudomoutoniceras honnorati (Leveille, 1837 †) - (CRIOCERATITIDAE) (FOSSIL)
- honnorati, Chrysallida honnorati E. Saurin, 1959 - (PYRAMIDELLIDAE)
- Honnoratia, Genus Honnoratia Busnardo, 2003 (EMERICICERATIDAE) (FOSSIL)
- honnoratiana, Honnoratia honnoratiana (A.V.M.D. D'Orbigny, 1842 †) - (EMERICICERATIDAE) (FOSSIL)
- honokowaiensis, Pleuropoma laciniosa honokowaiensis M.C. Neal, 1934 - (HELICINIDAE)
- honoluluensis, Acteocina honoluluensis H.A. Pilsbry, 1917 - (ACTEOCINIDAE)
- honoluluensis, Nucleolaria honoluluensis J.C. Melvill, 1888 - syn of: Nucleolaria granulata (W.H. Pease, 1862) - (CYPRAEIDAE)
- honoluluensis, Gadila honoluluensis (R.B. Watson, 1879) - (GADILIDAE)
- honoluluensis, Rissoina honoluluensis R.B. Watson, 1886 - (RISSOINIDAE)
- honoluluensis, Lyrodus honoluluensis C.H. Edmondson, 1942 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- honomuniensis, Newcombia pfeifferi honomuniensis H.A. Pilsbry & C.M. Cooke, 1912 - (ACHATINELLIDAE)
- honora, Cerithiopsis honora W.H. Dall, 1927 - (CERITHIOPSIDAE)
- honorabilis, Obtusoconus honorabilis (Z.X. Qian & al., 1979 †) - (HELCIONELLIDAE) (FOSSIL)
- honorabilis, Lapworthella honorabilis Z.X. Qian & al., 1979 † - syn of: Obtusoconus honorabilis (Z.X. Qian & al., 1979 †) - (HELCIONELLIDAE) (FOSSIL)
- honorati, Xerotricha honorati J.R. Bourguignat in É.A.A. Locard, 1882 - syn of: Xerotricha conspurcata (J.P.R. Draparnaud, 1801) - (HYGROMIIDAE)
- honoratus, Straparollus honoratus J. Perner, 1903 † - (EUOMPHALIDAE) (FOSSIL)
- honquedoensis, Montanaria honquedoensis Desbiens, 1994 † - (MONTANARIIDAE) (FOSSIL)
- hontensis, Mangelia hontensis M. Csepreghy, 1953 † - (MANGELIIDAE) (FOSSIL)
- hoodensis, Lirobarleeia hoodensis (P. Bartsch, 1911) - (BARLEEIIDAE)
- hoodensis, Naesiotus hoodensis W.H. Dall, 1900 - (BULIMULIDAE)
- hoodensis, Alvinia hoodensis P. Bartsch, 1911 - syn of: Lirobarleeia hoodensis (P. Bartsch, 1911) - (RISSOIDAE)
- hooijeri, Pongo hooijeri G. Schwartz, G.E. Long, & al., 1995 † - (Hominidae) (FOSSIL)
- hookeeri, Scyllaea hookeeri J.E. Gray, 1850 - syn of: Scyllaea pelagica C. Linnaeus, 1758 - (SCYLLAEIDAE)
- hookeri, Acanthochaetes hookeri Gray, 1843 - syn of: Acanthochitona zelandica (J.R.C. Quoy & J.P. Gaimard, 1835) - (ACANTHOCHITONIDAE)
- hookeri, Girasia hookeri J.E. Gray, 1872 - (ARIOPHANTIDAE)
- hookeri, Notodiscus hookeri (L.A. Reeve, 1854) - (CHAROPIDAE)
- hookeri, Orientogalba hookeri (L.A. Reeve, 1850) - (LYMNAEIDAE)
- hookeri, Lymnaea hookeri L.A. Reeve, 1850 - syn of: Orientogalba hookeri (L.A. Reeve, 1850) - (LYMNAEIDAE)
- hookeri, Scyllaea hookeri J.E. Gray, 1850 - syn of: Scyllaea pelagica C. Linnaeus, 1758 - (SCYLLAEIDAE)
- hookeri, Turritella hookeri L.A. Reeve, 1849 - (TURRITELLIDAE)
- hookeriana, Flammocharopa hookeriana (W.F. Petterd, 1879) - (CHAROPIDAE)
- hooksi, Chondropomium hooksi G.T. Watters & G. Duffy, 2010 - (POMATIIDAE)
- Hoonsyrnola, syn of: Genus Puposyrnola A.E.M. Cossmann, 1921 (PYRAMIDELLIDAE)
- hoornae, Dyris hoornae Wesselingh, 2006 † - (COCHLIOPIDAE) (FOSSIL)
- hooveri, Borsonella hooveri R. Arnold, 1903 - syn of: Phrontis versicolor (C.B. Adams, 1852) - (BORSONIIDAE)
- hooveri, Clypeoceras hooveri A. Hyatt & Smith, 1905 † - syn of: Guodunites hooveri (A. Hyatt & Smith, 1905 †) - (CLYPEOCERATIDAE) (FOSSIL)
- hooveri, Mangelia hooveri R. Arnold, 1903 - (MANGELIIDAE)
- hooveri, Guodunites hooveri (A. Hyatt & Smith, 1905 †) - (PROPTYCHITIDAE) (FOSSIL)
- hooyoensis, Mesophaedusa hooyoensis H. Minato & A. Tada, 1987 - (CLAUSILIIDAE)
- hopei, Acteon hopei J.B. Vérany, 1853 - syn of: Thuridilla hopei (J.B. Vérany, 1853) - (ACTEONIDAE)
- hopei, Thuridilla hopei (J.B. Vérany, 1853) - (PLAKOBRANCHIDAE)
- hopensacki, Palaeoneilo hopensacki de Verneuil & Barrande, 1855 † - syn of: Cardiolaria beirensis (Sharpe, 1853 †) - (MALLETIIDAE) (FOSSIL)
- hopensacki, Nucula hopensacki de Verneuil & Barrande, 1855 † - syn of: Cardiolaria beirensis (Sharpe, 1853 †) - (NUCULIDAE) (FOSSIL)
- hopensis, Notosinister hopensis C.F. Laseron, 1958 - (TRIPHORIDAE)
- hopetonensis, Pomacea hopetonensis I. Lea, 1839 - syn of: Pomacea paludosa (T. Say, 1829) - (AMPULLARIIDAE)
- hopetonensis, Triodopsis hopetonensis R.J. Shuttleworth, 1852 - (POLYGYRIDAE)
- hopetonensis, Elliptio hopetonensis I. Lea, 1838 - (UNIONIDAE)
- hopii, Romanella hopii (P.M.T. de Serres, 1827 †) - (ANADROMIDAE) (FOSSIL)
- hopii, Anchura hopii Kirkland, 1996 † - (APORRHAIDAE) (FOSSIL)
- hopkinsi, Scapharca hopkinsi H.A. Pilsbry & A.A. Olsson, 1941 † - (ARCIDAE) (FOSSIL)
- hopkinsi, Neobuchotrigonia hopkinsi (A.A. Olsson, 1944 †) - (BUCHOTRIGONIIDAE) (FOSSIL)
- hopkinsi, Cerithium hopkinsi A.A. Olsson, 1928 † - (CERITHIIDAE) (FOSSIL)
- hopkinsi, Eotomaria hopkinsi Parks, 1915 † - (EOTOMARIIDAE) (FOSSIL)
- hopkinsi, Penitella hopkinsi J. Kennedy & Armentrout, 1989 - (PHOLADIDAE)
- hopkinsi, Calyptraphorus hopkinsi A.A. Olsson, 1934 † - (ROSTELLARIIDAE) (FOSSIL)
- hopkinsi, Turritella hopkinsi A.A. Olsson, 1928 † - (TURRITELLIDAE) (FOSSIL)
- Hopkinsia, Genus Hopkinsia F.M. MacFarland, 1905 (GONIODORIDIDAE)
- Hopkinsiana, Genus Hopkinsiana Olsson, 1929 (CAENOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Hopkinsiella, syn of: Genus Okenia F.S. Leuckart & H.G. Bronn in K.T. Menke, 1830 (GONIODORIDIDAE)
- hopkinsiensis, Diplodonta hopkinsiensis Clark, 1895 † - (UNGULINIDAE) (FOSSIL)
- hopkinsoni, Palaearca hopkinsoni Hicks, 1873 † - syn of: Cyrtodonta oboloidea (Hicks, 1873 †) - (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- hopkinsoni, Cyrtodonta hopkinsoni Hicks, 1873 † - syn of: Cyrtodonta oboloidea (Hicks, 1873 †) - (CYRTODONTIDAE) (FOSSIL)
- Hoplikosmoceras, syn of: Genus Kosmoceras Sowerby, 1816 (KOSMOCERATIDAE) (FOSSIL)
- Hoplikosmoceras, Genus Hoplikosmoceras Buckman, 1924 (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- Hoplikosmokas, Genus Hoplikosmokas (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- hoplites, Deroceras hoplites H.R. Simroth, 1899 - syn of: Toxolimax hoplites (H.R. Simroth, 1899) - (AGRIOLIMACIDAE)
- Hoplites, syn of: Genus Girasia J.E. Gray, 1855 (ARIOPHANTIDAE)
- hoplites, Buliminus hoplites C.A. Westerlund, 1890 - syn of: Ljudmilena sieversi (A. Mousson, 1873) - (ENIDAE)
- Hoplites, Genus Hoplites Neumayr, 1875 (HOPLITIDAE) (FOSSIL)
- hoplites, Toxolimax hoplites (H.R. Simroth, 1899) - (LIMACIDAE)
- hoplites, Murex hoplites P. Fischer, 1876 - syn of: Hexaplex duplex (P.F. Röding, 1798) - (MURICIDAE)
- HOPLITIDAE Douvillι, 1890 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-HOPLITOIDEA [Superfamily]) (FOSSIL)
- Hoplitocrioceras, Genus Hoplitocrioceras Giovine, 1950 (NEOCOMITIDAE) (FOSSIL)
- Hoplitoides, Genus Hoplitoides von Koenen, 1898 (COILOPOCERATIDAE) (FOSSIL)
- hoplitoides, Nikitinoceras hoplitoides (Nikitin, 1888 †) - (POLYPTYCHITIDAE) (FOSSIL)
- Hoplitoplacenticeras, Genus Hoplitoplacenticeras Paulcke , 1906 (PLACENTICERATIDAE) (FOSSIL)
- Hoplobiena, syn of: Genus Haplotrema C.M.F. Ancey, 1881 (HAPLOTREMATIDAE)
- Hoplocardioceras, Genus Hoplocardioceras Spath, 1935 (CARDIOCERATIDAE) (FOSSIL)
- Hoplocrioceras, Genus Hoplocrioceras Spath , 1924 (ACRIOCERATIDAE) (FOSSIL)
- Hoplodoris, Genus Hoplodoris L.S.R. Bergh, 1880 (DISCODORIDIDAE)
- hoplophorus, Ammonites hoplophorus Giebel, 1852 † - syn of: Rieppelites shevyrevi Monnet & Bucher, 2005 † - (AMMONITIDA (unassigned)) (FOSSIL)
- hoplophorus, Peltomorphites hoplophorus S.S. Buckman † - (ASPIDOCERATIDAE) (FOSSIL)
- Hoplopteron, Genus Hoplopteron P. Fischer, 1876 (EULIMIDAE)
- Hoplopteropsis, syn of: Genus Oceanida L. de Folin, 1870 (EULIMIDAE)
- Hoploscaphites, Genus Hoploscaphites Owen, 1852 (SCAPHITIDAE) (FOSSIL)
- Hoplotropites, Genus Hoplotropites Spath, 1929 (TROPITIDAE) (FOSSIL)
- hopneri, Orthocardium porulosum hopneri M. Glibert & Poel, 1970 † - (CARDIIDAE) (FOSSIL)
- hoppii, Pupilla hoppii H.P.C. Møller, 1842 - syn of: Isthmia modesta (T. Say, 1824) - (PUPILLIDAE)
- hoppla, Vallonia hoppla J. Gerber, 1996 - (VALLONIIDAE)
- hoppla compactula, Vallonia hoppla compactula J. Gerber, 1996 - (VALLONIIDAE)
- Hoptotrema, syn of: Genus Haplotrema C.M.F. Ancey, 1881 (HAPLOTREMATIDAE)
- hopwoodi, Fusiconus hopwoodi (J.R. le B. Tomlin, 1937) - (CONIDAE)
- hopwoodi, Fusiconus hopwoodi (J.R. le B. Tomlin, 1937) - syn of: Fusiconus hopwoodi (J.R. le B. Tomlin, 1937) - (CONIDAE)
- Hoqia, Genus Hoqia Neubert, 2005 (CERASTUIDAE)
- hora, Ampelita hora G.F. Angas, 1877 - syn of: Ampelita hova (G.F. Angas, 1877) - (ACAVIDAE)
- horadadae, Iberellus horadadae S.G.A. Jaeckel, 1952 - syn of: Iberellus companyonii (E.A. Rossmässler, 1839) - (HELICIDAE)
- horae, Lymnaea horae T.N. Annandale & Surya Rao, 1925 - (LYMNAEIDAE)
- horae, Tricula horae T.N. Annandale & Surya Rao, 1925 - (POMATIOPSIDAE)
- horai, Dentiovula horai (C. Cardin, 1994) - (OVULIDAE)
- HORAICLAVIDAE Bouchet, Kantor, Sysoev & Puillandre, 2011 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-NEOGASTROPODA [Order]-CONOIDEA [Superfamily])
- Horaiclavus, Genus Horaiclavus K. Oyama, 1954 (HORAICLAVIDAE)
- horasanensis, Gyraulus horasanensis Schütt, 1991 † - (PLANORBIDAE) (FOSSIL)
- Horatia, Genus Horatia J.R. Bourguignat, 1887 (HYDROBIIDAE)
- horatiana, Venericor horatiana (Gardner, 1927 †) - (CARDITIDAE) (FOSSIL)
- horatieformis, Plagigeyeria horatieformis Y.I. Starobogatov, 1962 - (HYDROBIIDAE)
- horatii, Armina horatii (C.N.E. Eliot, 1903) - (ARMINIDAE)
- horatii, Helix horatii J.R. Bourguignat, 1888 - syn of: Chilostoma pouzolzi (G.P. Deshayes, 1830 ) - (HELICIDAE)
- horatii, Valvata horatii J.L.Jr. Baily & J.L.Jr. Baily, 1951 - (VALVATIDAE)
- hordacea, Prosimnia hordacea J.B.P.A. Lamarck, 1810 - syn of: Prosimnia semperi (H.C. Weinkauff, 1881) - (OVULIDAE)
- hordacea, Ovula hordacea L.C. Kiener, 1843 - syn of: Simnia avena (G.B. II Sowerby, 1832) - (OVULIDAE)
- hordacea, Physa hordacea I. Lea, 1864 - (PHYSIDAE)
- hordacea, Roxania hordacea (A. Adams, 1850) - (SCAPHANDRIDAE)
- hordacea, Oxyloma hordacea J.R. Bourguignat, 1877 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- hordacea, Bayania hordacea (J.B.P.A. Lamarck, 1804 †) - (THIARIDAE) (FOSSIL)
- hordacea, Trivirostra hordacea (L.C. Kiener, 1843) - (TRIVIIDAE)
- hordacea, Trivia hordacea L.C. Kiener, 1843 - syn of: Trivirostra hordacea (L.C. Kiener, 1843) - (TRIVIIDAE)
- hordacea delibata, Bayania hordacea delibata (G.P. Deshayes, 1862 †) - (THIARIDAE) (FOSSIL)
- hordaceum, Ovula hordaceum G.B. I Sowerby, 1830 - syn of: Prosimnia semperi (H.C. Weinkauff, 1881) - (OVULIDAE)
- hordaceus, Pupoides hordaceus W.M. Gabb, 1866 - (PUPILLIDAE)
- hordea, Eoancilla hordea Garvie, 2013 † - (ANCILLARIIDAE) (FOSSIL)
- hordeacea, Columbella hordeacea R.A. Philippi, 1849 - syn of: Zafra pumila (R.W. Dunker, 1858) - (COLUMBELLIDAE)
- hordeacella, Gastrocopta pellucida hordeacella H.A. Pilsbry, 1890 - (GASTROCOPTIDAE)
- hordeacella parvidens, Bifidaria hordeacella parvidens V. Sterki, 1899 - syn of: Gastrocopta pellucida hordeacella H.A. Pilsbry, 1890 - (VERTIGINIDAE)
- hordeastra, Cryptospira hordeastra Darragh, 2017 † - (MARGINELLIDAE) (FOSSIL)
- hordeola, Eulima hordeola F. Sacco 1892 † - (EULIMIDAE) (FOSSIL)
- hordeola, Dentimargo hordeola (G.P. Deshayes, 1835 †) - (MARGINELLIDAE) (FOSSIL)
- hordeola, Odostomia hordeola (J.B.P.A. Lamarck, 1804 †) - (PYRAMIDELLIDAE) (FOSSIL)
- hordeola, Conomitra hordeola G.P. Deshayes, 1865 † - (VOLUTOMITRIDAE) (FOSSIL)
- Hordeulima, syn of: Genus Eulima A. Risso, 1826 (EULIMIDAE)
- hordeum, Retizafra hordeum K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- hordeum, Radix hordeum (A. Mousson, 1874) - (LYMNAEIDAE)
- hordeum, Fusiguraleus hordeum (R.A. Philippi, 1887 †) - (MANGELIIDAE) (FOSSIL)
- hordeum, Turbo hordeum Stoppani, 1858 † - syn of: Hologyra fastigiata (Stoppani, 1857 †) - (TURBINIDAE) (FOSSIL)
- hordeus, Glischrus hordeus S.E. Studer, 1820 - syn of: Chondrina clienta (C.A. Westerlund, 1883) - (HELICIDAE)
- Horea, syn of: Genus Melanoides G.A. Olivier, 1804 (THIARIDAE)
- Horehronia, Genus Horehronia Andrusov, 1976 (RADIOLITIDAE) (FOSSIL)
- horei, Tiphobia horei E.A. Smith, 1880 - (PALUDOMIDAE)
- horei, Bridouxia horei (E.A. Smith, 1881) - (PALUDOMIDAE)
- horei, Raffraya horei E.A. Smith, 1890 - (STREPTAXIDAE)
- horei, Coelatura horei (E.A. Smith, 1880) - (UNIONIDAE)
- horei josseti, Coelatura horei josseti J.R. Bourguignat, 1886 - (UNIONIDAE)
- horei jouberti, Coelatura horei jouberti J.R. Bourguignat, 1886 - (UNIONIDAE)
- horei lavigeriana, Coelatura horei lavigeriana J.R. Bourguignat, 1886 - (UNIONIDAE)
- horei menardi, Coelatura horei menardi J.R. Bourguignat, 1886 - (UNIONIDAE)
- horeshaensis, Colchidites horeshaensis Rouchadze, 1933 † - syn of: Martelites horeshaensis (Rouchadze, 1933 †) - (ANCYLOCERATIDAE) (FOSSIL)
- horeshaensis, Martelites horeshaensis (Rouchadze, 1933 †) - (HETEROCERATIDAE) (FOSSIL)
- horeshaensis, Mesohibolithes horeshaensis (Rukhadze, 1938 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- horezia, Lehmannia horezia A.V. Grossu & D. Lupu, 1967 - (LIMACIDAE)
- horia, Neotrigonia horia B.C. Cotton, 1953 - syn of: Neotrigonia bednalli (J.C. Verco, 1907) - (TRIGONIIDAE)
- horii, Eubranchus horii (K. Baba, 1960) - (EUBRANCHIDAE)
- horii, Amphorina horii (K. Baba, 1960) - syn of: Eubranchus horii (K. Baba, 1960) - (EUBRANCHIDAE)
- horii, Chrysallida horii J.J. Van Aartsen, E. Gittenberger & J. Goud, 2000 - (PYRAMIDELLIDAE)
- horii, Latitrigonia horii K. Maeda, 1963 † - (TRIGONIIDAE) (FOSSIL)
- horikawai, Pseudophaedusa horikawai (J.T. Kuroda, 1941) - (CLAUSILIIDAE)
- horikawai, Littorina horikawai Matsubayashi & T. Habe in T. Habe, 1979 - (LITTORINIDAE)
- horikawai ishizakii, Pseudophaedusa horikawai ishizakii (J.T. Kuroda, 1941) - (CLAUSILIIDAE)
- horikoshii, Fissidentalium horikoshii T.A. Okutani, 1982 - (DENTALIIDAE)
- horikoshii, Gigantidas horikoshii J. Hashimoto & T. Yamane, 2005 - (MYTILIDAE)
- horikosii, Granulina horikosii T. Habe, 1951 - syn of: Granulina tantilla (A.A. Gould, 1860) - (MARGINELLIDAE)
- horimasarui, Primovula horimasarui C.N. Cate & M. Azuma, 1971 - syn of: Hiatavolva coarctata (G.B. II Sowerby in A. Adams & L.A. Reeve, 1848) - (OVULIDAE)
- horinjiense, Neostylidium horinjiense T. Oinomikado & N. Ikebe, 1959 † - (CERITHIIDAE) (FOSSIL)
- Horioceras, Genus Horioceras Munier-Chalmas, 1892 (OPPELIIDAE) (FOSSIL)
- horiomphala, Videna horiomphala (L. Pfeiffer, 1854) - (TROCHOMORPHIDAE)
- Horiopleura, Genus Horiopleura Douvillι, 1889 (POLYCONITIDAE) (FOSSIL)
- Horiostoma, syn of: Genus Oriostoma Munier-Chalmas, 1876 (ORIOSTOMATIDAE) (FOSSIL)
- Horiostomella, Genus Horiostomella Perner, 1903 (SINUOPEIDAE) (FOSSIL)
- horizontalis, Obba horizontalis L. Pfeiffer, 1845 - (CAMAENIDAE)
- horizontalis, Buechelia horizontalis Heidelberger & K. Bandel, 1999 † - (GOSSELETINIDAE) (FOSSIL)
- horizontalis, Palaeacmaea horizontalis J. Perner, 1903 † - (PALAEACMAEIDAE) (FOSSIL)
- Horizostoma, Genus Horizostoma Deninger, 1905 (CAENOGASTROPODA (UNASSIGNED)) (FOSSIL)
- hormica, Thais hormica W.H. Dall, 1915 - syn of: Nucella lamellosa hormica W.H. Dall, 1915 - (MURICIDAE)
- hormica, Nucella lamellosa hormica W.H. Dall, 1915 - (MURICIDAE)
- hormidula, Cerithium vulgatum hormidula T.A. de M. Monterosato in W. Kobelt, 1908 - (CERITHIIDAE)
- hormidulum, Cerithium hormidulum W. Kobelt, 1911 - (CERITHIIDAE)
- hormolira, Omphaloptycha hormolira Batten & A. Stokes, 1986 † - (COELOSTYLINIDAE) (FOSSIL)
- Hormomya, syn of: Genus Brachidontes W.J. Swainson, 1840 (MYTILIDAE)
- hormophora, Eubela hormophora R.B. Watson, 1881 - syn of: Eubela limacina (W.H. Dall, 1881) - (RAPHITOMIDAE)
- hormophora, Proxichione hormophora (R. Tate, 1885 †) - (VENERIDAE) (FOSSIL)
- hormophorus, Inquisitor hormophorus A.V. Sysoev & P. Bouchet, 2001 - (PSEUDOMELATOMIDAE)
- Hormospira, Genus Hormospira S.S. Berry, 1958 (PSEUDOMELATOMIDAE)
- Hormotoma, Genus Hormotoma Salter 1859 (MURCHISONIIDAE) (FOSSIL)
- hormotoma, Loxisonia hormotoma Batten, 1985 † - (MURCHISONIIDAE) (FOSSIL)
- HORMOTOMIDAE - syn of Family: MURCHISONIIDAE (FOSSIL)
- Hormotomina, Genus Hormotomina Grabau & Shimer 1909 (MURCHISONIIDAE) (FOSSIL)
- hornae, Runcina hornae R.L. Schmekel & D. Cappellato, 2002 - (RUNCINIDAE)
- Hornalina, syn of: Subgenus Tellina (Homalina) F. Stoliczka, 1870 (TELLINIDAE)
- hornbeckiana, Coralliophaga hornbeckiana D'Orbigny in R. de la Sagra, 1853 - syn of: Coralliophaga coralliophaga (J.F. Gmelin, 1791) - (TRAPEZIDAE)
- hornbeckii, Chondrina hornbeckii A. Villa, 1841 - syn of: Anoma splendens (K.T. Menke, 1841) - (CHONDRINIDAE)
- hornbeckii, Mangelia hornbeckii L.A. Reeve, 1846 - syn of: Eucithara coronata (R.B. Hinds, 1843) - (MANGELIIDAE)
- hornbeckii, Eucithara hornbeckii L.A. Reeve, 1846 - syn of: Eucithara coronata (R.B. Hinds, 1843) - (MANGELIIDAE)
- hornbeckii, Martesia hornbeckii D'Orbigny in R. de la Sagra, 1853 - syn of: Martesia striata (C. Linnaeus, 1758) - (PHOLADIDAE)
- hornbosteli, Lamprocystis hornbosteli H.B. Baker, 1938 - (EUCONULIDAE)
- hornbyense, Pachydiscus hornbyense Jones, 1963 † - syn of: Pachydiscus ootacodensis (Stolickzka, 1865 †) - (DESMOCERATIDAE) (FOSSIL)
- hornbyense, Cyrtobelus hornbyense A. Fuchs & al., 2012 † - (GROENLANDIBELIDAE) (FOSSIL)
- hornbyense, Didymoceras hornbyense (J.J.F. Whiteaves, 1876 †) - (NOSTOCERATIDAE) (FOSSIL)
- hornbyensis, Flaventia hornbyensis Anderson, 1958 † - syn of: Paraesa lens (W.M. Gabb, 1864 †) - (VENERIDAE) (FOSSIL)
- horneana, Mangelia horneana E.A. Smith, 1884 - (MANGELIIDAE)
- horneana compar, Mangelia horneana compar J.C. Melvill, 1917 - (MANGELIIDAE)
- hornei, Piloceras hornei Ulrich & Foerste † - (PILOCERATIDAE) (FOSSIL)
- hornelli, Acrosterigma hornelli J.R. le B. Tomlin, 1928 - syn of: Acrosterigma pristipleura (W.H. Dall, 1901) - (CARDIIDAE)
- hornelli, Terebra hornelli E.W. Vredenburg, 1921 † - (TEREBRIDAE) (FOSSIL)
- hornensis, Pecten hornensis Deperet & F. Roman, 1902 † - (PECTINIDAE) (FOSSIL)
- hornensis, Gyraulus hornensis F.C. Baker, 1934 - (PLANORBIDAE)
- hornerae, Beyrichoceras hornerae Miller, 1947 † - (MAXIGONIATITIDAE) (FOSSIL)
- horneri, Partulina horneri D.D. Baldwin, 1895 - (ACHATINELLIDAE)
- horneri, Punctum horneri C.M.F. Ancey, 1904 - (PUNCTIDAE)
- horneri candida, Partulina horneri candida H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- horneri fuscospira, Partulina horneri fuscospira H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- horneri fuscozonata, Partulina horneri fuscozonata H.A. Pilsbry & C.M. Cooke, 1914 - (ACHATINELLIDAE)
- horneri kapuana, Partulina horneri kapuana J.J. Gouveia & J.J. Gouveia, 1920 - (ACHATINELLIDAE)
- hornesi, Conus hornesi Doderlein, 1863 † - (CONIDAE) (FOSSIL)
- hornesi, Turris hornesi G.P. Deshayes, 1866 † - (TURRIDAE) (FOSSIL)
- hφrnesi, Solarium hφrnesi Laube, 1867 † - syn of: Colpomphalus hoernesi (Laube, 1867 †) - (ARCHITECTONICIDAE) (FOSSIL)
- horni, Maoricolpus horni J. Marwick, 1971 † - (TURRITELLIDAE) (FOSSIL)
- horniana, Tonicia horniana A. de Rochebrune, 1889 - (CHITONIDAE)
- hornibrooki, Austroneaera hornibrooki J. Marwick, 1965 † - (CUSPIDARIIDAE) (FOSSIL)
- hornibrooki, Tropicolpus hornibrooki J. Marwick, 1971 † - (TURRITELLIDAE) (FOSSIL)
- hornigii, Cornucardia hornigii (Bittner, 1890 †) - (DICEROCARDIIDAE) (FOSSIL)
- hornii, Pacificor hornii (W.M. Gabb, 1864 †) - (CARDITIDAE) (FOSSIL)
- hornii, Conus hornii Gabb, 1864 † - (CONIDAE) (FOSSIL)
- hornii, Helix hornii W.M. Gabb, 1866 - syn of: Setidiscus hornii (W.M. Gabb, 1866) - (HELICIDAE)
- hornii, Polinices hornii W.M. Gabb, 1864 † - (NATICIDAE) (FOSSIL)
- hornii, Planorbella hornii (G.W. Tryon, 1865) - (PLANORBIDAE)
- hornii, Gobraeus hornii (W.M. Gabb, 1864 †) - (PSAMMOBIIDAE) (FOSSIL)
- hornii, Tellina hornii W.M. Gabb, 1864 † - syn of: Gobraeus hornii (W.M. Gabb, 1864 †) - (TELLINIDAE) (FOSSIL)
- hornii, Setidiscus hornii (W.M. Gabb, 1866) - (THYSANOPHORIDAE)
- hornii calafia, Pacificor hornii calafia (C.C. Stewart, 1930 †) - (CARDITIDAE) (FOSSIL)
- hornii carlosensis, Pacificor hornii carlosensis (E.H. Vokes, 1939 †) - (CARDITIDAE) (FOSSIL)
- hornii joaquinensis, Pacificor hornii joaquinensis (E.H. Vokes, 1939 †) - (CARDITIDAE) (FOSSIL)
- hornungi, Ethminolia hornungi (J. Bisacchi, 1931) - (TROCHIDAE)
- hornyi, Cyrtolites hornyi Wahlman, 1992 † - (CYRTOLITIDAE) (FOSSIL)
- hornyi, Sinuitopsis hornyi Marek, 1963 † - (CYRTOLITIDAE) (FOSSIL)
- hornyi, Globosinuitina hornyi Frýda, 1998 † - (TROPIDODISCIDAE) (FOSSIL)
- hornyi, Krameriella hornyi Frýda & Heidelberger, 2003 † - (VLTAVIELLIDAE) (FOSSIL)
- Hornyzyga, Genus Hornyzyga Cook, 1995 (PALAEOZYGOPLEURIDAE) (FOSSIL)
- horokanaiense, Tanabeceras horokanaiense Y. Shigeta, 2013 † - (GAUDRYCERATIDAE) (FOSSIL)
- horologia, Thorunna horologia W.B. Rudman, 1984 - (CHROMODORIDIDAE)
- Horologica, Genus Horologica C.F. Laseron, 1956 ? (CERITHIOPSIDAE)
- Horologium, Genus Horologium Perner, 1907 (PLANITROCHIDAE) (FOSSIL)
- horonanladia, Parvedentulina horonanladia K.C. Emberton, 2002 - (STREPTAXIDAE)
- horreana, Anchura horreana L.W. Stephenson, 1952 † - (APORRHAIDAE) (FOSSIL)
- horrenda, Surcula horrenda R.B. Watson, 1886 - syn of: Stenodrillia horrenda (R.B. Watson, 1886) - (CLAVATULIDAE)
- horrenda, Stenodrillia horrenda (R.B. Watson, 1886) - (DRILLIIDAE)
- horrenda, Knefastia horrenda R.B. Watson, 1886 - syn of: Stenodrillia horrenda (R.B. Watson, 1886) - (PSEUDOMELATOMIDAE)
- horrenda, Pleurotoma horrenda R.B. Watson, 1886 - syn of: Stenodrillia horrenda (R.B. Watson, 1886) - (TURRIDAE)
- horrida, Dominamaria horrida (C. Hedley, 1891) - (ASSIMINEIDAE)
- horrida, Cordieria horrida T.A. de M. Monterosato, 1884 - syn of: Raphitoma horrida (T.A. de M. Monterosato, 1884) - (BORSONIIDAE)
- horrida, Plectotropis horrida H.A. Pilsbry, 1900 - (BRADYBAENIDAE)
- horrida, Moellendorffia horrida (L. Pfeiffer, 1862) - (CAMAENIDAE)
- horrida, Cerithiopsis horrida T.A. de M. Monterosato, 1874 - (CERITHIOPSIDAE)
- horrida, Danilia horrida O.G. Costa, 1861 - syn of: Danilia tinei (P. Calcara, 1839) - (CHILODONTIDAE)
- horrida, Nenia horrida J.F. Mabille, 1887 - syn of: Grandinenia ardouiniana (P.M. Heude, 1882) - (CLAUSILIIDAE)
- horrida, Ambercyclus ornatus horrida Hudleston † - (EUCYCLIDAE) (FOSSIL)
- horrida, Harpa horrida R.W. Dunker, 1847 † - (HARPIDAE) (FOSSIL)
- horrida, Lyonsiella horrida (J.A. Allen & H. Turner, 1974) - (LYONSIELLIDAE)
- horrida, Ricinula horrida J.B.P.A. Lamarck, 1816 - syn of: Drupa morum P.F. Röding, 1798 - (MURICIDAE)
- horrida, Drupa horrida J.B.P.A. Lamarck, 1816 - syn of: Drupa morum P.F. Röding, 1798 - (MURICIDAE)
- horrida, Ocenebra erinaceus horrida (G.S. Coen, 1933 ex T.A. de M. Monterosato MS) - (MURICIDAE)
- horrida, Stavelia horrida R.W. Dunker, 1857 - syn of: Stavelia subdistorta (C.A. Récluz, 1852) - (MYTILIDAE)
- horrida, Hebra horrida (R.W. Dunker, 1847) - (NASSARIIDAE)
- horrida, Melaniella acuticostata horrida H.A. Pilsbry - (OLEACINIDAE)
- horrida, Distorsio horrida J.T. Kuroda & T. Habe, 1961 - syn of: Distorsio perdistorta H.C. Fulton, 1938 - (PERSONIDAE)
- horrida, Plicatula horrida R.W. Dunker, 1882 - (PLICATULIDAE)
- horrida, Polycera horrida P. Hesse, 1872 - syn of: Aegires punctilucens (A.V.M.D. D'Orbigny, 1837) - (POLYCERIDAE)
- horrida, Pinctada horrida R.W. Dunker, 1872 - syn of: Pinctada imbricata P.F. Röding, 1798 - (PTERIIDAE)
- horrida, Costabieta horrida (A. Garrett, 1873) - (PYRAMIDELLIDAE)
- horrida, Raphitoma horrida (T.A. de M. Monterosato, 1884) - (RAPHITOMIDAE)
- horrida, Raphitoma horrida É.A.A. Locard & E. Caziot, 1900 - syn of: Raphitoma horrida (T.A. de M. Monterosato, 1884) - (RAPHITOMIDAE)
- horrida, Rissoina horrida A. Garrett, 1873 - syn of: Costabieta horrida (A. Garrett, 1873) - (RISSOINIDAE)
- horrida, Dosinia horrida J. Marwick, 1927 - syn of: Dosinia anus (R.A. Philippi, 1848) - (VENERIDAE)
- horrida, Serpulorbis horrida T.A. de M. Monterosato, 1892 - (VERMETIDAE)
- horrida blainvillei, Muricopsis horrida blainvillei G.S. Coen, 1933 ex T.A. de M. Monterosato MS - syn of: Muricopsis cristatus horridus (G.S. Coen, 1933 ex T.A. de M. Monterosato MS) - (MURICIDAE)
- horridula, Xerotricha horridula D.M. Ortiz, 1950 non West., 1892 - syn of: Xerotricha conspurcata (J.P.R. Draparnaud, 1801) - (HYGROMIIDAE)
- horridula, Xerotricha horridula C.A. Westerlund, 1892 - syn of: Xerotricha apicina (J.B.P.A. Lamarck, 1822) - (HYGROMIIDAE)
- horridulum, Cyclophorus horridulum (P.M.A. Morelet, 1882) - (CYCLOPHORIDAE)
- horridum, Eodouvilleiceras horridum F. Riedel † - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- horridum, Paracrioceras horridum (A. von Koenen, 1902 †) - (ANCYLOCERATIDAE) (FOSSIL)
- horridum, Buccinum horridum R.W. Dunker, 1847 - syn of: Hebra horrida (R.W. Dunker, 1847) - (BUCCINIDAE)
- horridum, Crioceras horridum A. von Koenen, 1902 † - syn of: Paracrioceras horridum (A. von Koenen, 1902 †) - (CRIOCERATITIDAE) (FOSSIL)
- horridum, Phyllodesmium horridum (W. Macnae, 1954) - (FACELINIDAE)
- horridum, Hystrivasum horridum (A. Heilprin, 1887 †) - (TURBINELLIDAE) (FOSSIL)
- horridus, Euchelus horridus (R.A. Philippi, 1846) - (CHILODONTIDAE)
- horridus, Parasaynoceras horridus (A.V.M.D. D'Orbigny, 1850 †) - (HOLCODISCIDAE) (FOSSIL)
- horridus, Callihoplites horridus Spath † - (HOPLITIDAE) (FOSSIL)
- horridus, Typhis horridus (G.B. Brocchi, 1814 †) - (MURICIDAE) (FOSSIL)
- horridus, Murex horridus W.J. Broderip in G.B. I Sowerby, 1833 - syn of: Xanthochorus buxeus (W.J. Broderip, 1833) - (MURICIDAE)
- horridus, Muricopsis cristatus horridus (G.S. Coen, 1933 ex T.A. de M. Monterosato MS) - (MURICIDAE)
- horridus, Nassarius horridus R.W. Dunker, 1847 - syn of: Hebra horrida (R.W. Dunker, 1847) - (NASSARIIDAE)
- horridus, Abdopus horridus (A.V.M.D. D'Orbigny, 1826) - (OCTOPODIDAE)
- horridus, Octopus horridus D'Orbigny, 1826 - syn of: Abdopus horridus (A.V.M.D. D'Orbigny, 1826) - (OCTOPODIDAE)
- horridus, Cyclopecten horridus H.H. Dijkstra, 1995 - (PROPEAMUSSIIDAE)
- horridus, Tricornis horridus M. Smith, 1940 - syn of: Lobatus gigas (C. Linnaeus, 1758) - (STROMBIDAE)
- horridus, Trochus horridus O.G. Costa, 1861 - syn of: Danilia tinei (P. Calcara, 1839) - (TROCHIDAE)
- horridus, Vermetus horridus T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- horridus asperrima, Vermetus horridus asperrima T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- horridus asperrimus, Vermetus horridus asperrimus T.A. de M. Monterosato, 1892 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- horridus minor, Vermetus horridus minor P.M. Pallary, 1938 - syn of: Thylacodes arenarius (C. Linnaeus, 1758) - (VERMETIDAE)
- horripila, Moreletina horripila (P.M.A. Morelet & H. Drouët, 1857) - (HYGROMIIDAE)
- Horsegullia, Genus Horsegullia Parkhaev, 2004 (TRENELLIDAE) (FOSSIL)
- horsegulliensis, Horsegullia horsegulliensis (Parkhaev, 2001 †) - (TRENELLIDAE) (FOSSIL)
- horsfieldii, Coecella horsfieldii J.E. Gray, 1853 - (MESODESMATIDAE)
- horsfieldii formosae, Coecella horsfieldii formosae L.A. de Rooij-Schuiling, 1972 - syn of: Coecella formosae L.A. de Rooij-Schuiling, 1972 - (MESODESMATIDAE)
- horsti, Menkia horsti H.D. Boeters, E. Gittenberger & P. Subai, 1985 - (ACICULIDAE)
- horsti, Limax horsti J. Germain - syn of: Limacus flavus (C. Linnaeus, 1758) - (LIMACIDAE)
- horsti, Octopus horsti L.M.A.O.E. Joubin, 1898 - syn of: Octopus cyanea J.E. Gray, 1849 - (OCTOPODIDAE)
- horsti, Oxychilus horsti (O. Böttger in P.H. Reibisch, 1892) - (OXYCHILIDAE)
- horsti, Schistophallus horsti O. Böttger in P.H. Reibisch, 1892 - syn of: Oxychilus horsti (O. Böttger in P.H. Reibisch, 1892) - (ZONITIDAE)
- horstkottei, Onychoteuthis horstkottei K.S. Bolstad, 2010 - (ONYCHOTEUTHIDAE)
- hortae, Amandana cisternasi hortae (F. Schröder, 1978) - (HYGROMIIDAE)
- hortana, Lauria hortana H.A. Pilsbry, 1923 - syn of: Lauria fasciolata P.M.A. Morelet, 1860 - (LAURIIDAE)
- hortense, Cerithium hortense Vinassa de Regny, 1898 † - syn of: Teremitra hortensis (Vinassa de Regny, 1898 †) - (CERITHIIDAE) (FOSSIL)
- hortensia, Raphistomina hortensia (Billings, 1865 †) - (HOLOPEIDAE) (FOSSIL)
- hortensia, Turbonilla hortensia K.H.J. Thiele, 1925 - (PYRAMIDELLIDAE)
- hortensia, Raphistoma hortensia Billings, 1865 † - syn of: Raphistomina hortensia (Billings, 1865 †) - (RAPHISTOMATIDAE) (FOSSIL)
- hortensiae, Achatina hortensiae P.M.A. Morelet, 1866 - (ACHATINIDAE)
- hortensiae, Blaesospira hortensiae M.L. Jaume, 1984 - syn of: Blaesospira rocai C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- hortensiae, Chondropoma ernesti hortensiae C.G. Aguayo, 1943 - (POMATIIDAE)
- hortensiae, Odostomella doliolum hortensiae (Nansouty, 1872) - (PYRAMIDELLIDAE)
- hortensis, Acavus hortensis O.F. Müller, 1774 - syn of: Cepaea hortensis (O.F. Müller, 1774) - (ACAVIDAE)
- hortensis, Kobeltia hortensis (A.E.J. Férussac, 1819) - (ARIONIDAE)
- hortensis, Kobeltia hortensis Auct. non A.E.J. Férussac - syn of: Arion distinctus (J.F. Mabille, 1868) - (ARIONIDAE)
- hortensis, Bulimus hortensis C.B. Adams, 1851 - syn of: Allopeas gracilis (F.W. Hutton, 1834) - (BULIMULIDAE)
- hortensis, Conus hortensis Vinassa de Regny, 1897 † - (CONIDAE) (FOSSIL)
- hortensis, Cepaea hortensis (O.F. Müller, 1774) - (HELICIDAE)
- hortensis, Teremitra hortensis (Vinassa de Regny, 1898 †) - (PYRAMIMITRIDAE) (FOSSIL)
- hortensis, Alvania hortensis P. Lozouet, 1998 † - (RISSOIDAE) (FOSSIL)
- hortensis baudonia, Cepaea hortensis baudonia A. Moquin-Tandon - (HELICIDAE)
- hortensis fuscolabiata, Cepaea hortensis fuscolabiata C. Kreglinger, 1870 - (HELICIDAE)
- hortensis lilacina, Cepaea hortensis lilacina J.W. Taylor - (HELICIDAE)
- hortensis lutea, Cepaea hortensis lutea (Y.L. Picard, 1834) - (HELICIDAE)
- Hortia, Genus Hortia P. Lozouet, 1999 (PYRAMIMITRIDAE)
- horticola, Neosuccinea horticola O.W.H. Reinhardt, 1877 - syn of: Novisuccinea lyrata (A.A. Gould, 1859) - (SUCCINEIDAE)
- hortonensis, Alaria hortonensis W.H. Hudleston, 1888 † - (APORRHAIDAE) (FOSSIL)
- hortulana, Semotrachia hortulana G.A. Solem, 1993 - (CAMAENIDAE)
- hortulana, Diplommatina hortulana (C.E. Lischke) - (DIPLOMMATINIDAE)
- hortulana, Palaeotachea hortulana (Thomä, 1845) † - (HELICIDAE) (FOSSIL)
- hortulana, Succinea hortulana P.M.A. Morelet, 1851 - (SUCCINEIDAE)
- Horusia, syn of: Genus Caelatura T.A. Conrad, 1865 (BARLEEIIDAE)
- hosayaka, Megalophaedusa hosayaka (H.A. Pilsbry, 1905) - (CLAUSILIIDAE)
- hosei, Protacanthoceras hosei Cobban, 1987 † - (ACANTHOCERATIDAE) (FOSSIL)
- hosei, Durgella hosei (H.H. Godwin-Austen, 1891) - (ARIOPHANTIDAE)
- hosei, Amphidromus hosei E.A. Smith, 1895 - (CAMAENIDAE)
- hosei, Alycaeus hosei H.H. Godwin-Austen, 1889 - (CYCLOPHORIDAE)
- hosei, Plectostoma hosei H.H. Godwin-Austen, 1890 - (DIPLOMMATINIDAE)
- hosei, Helix hosei H.H. Godwin-Austen, 1891 - syn of: Durgella hosei (H.H. Godwin-Austen, 1891) - (HELICIDAE)
- hosei, Georissa hosei H.H. Godwin-Austen, 1889 - (HYDROCENIDAE)
- hosei, Ussurites hosei Kummel, 1969 † - (USSURITIDAE) (FOSSIL)
- hosei sheridanense, Protacanthoceras hosei sheridanense Cobban, 1987 † - (ACANTHOCERATIDAE) (FOSSIL)
- hosfordensis, Volvarina bella hosfordensis W.C. Mansfield † - (MARGINELLIDAE) (FOSSIL)
- hosgori, Crommium hosgori Pacaud, 2016 † - (AMPULLINIDAE) (FOSSIL)
- hoshiaii, Falsimohnia hoshiaii (H. Numanami, 1996) - (BUCCINIDAE)
- hoshimagani, Epitonium hoshimagani T. Nakayama, 1991 - syn of: Epitonium koshimagani (T. Nakayama, 1991) - (EPITONIIDAE)
- hoshiyamai, Yakuchloritis hoshiyamai J.T. Kuroda & H. Minato, 1978 - (CAMAENIDAE)
- hoshiyamai, Cadella hoshiyamai J.T. Kuroda, 1960 - (TELLINIDAE)
- hosiusi, Kelletia hosiusi (A.H.E. Beyrich, 1856 †) - (BUCCINIDAE) (FOSSIL)
- hosiusi, Anachis hosiusi (A. von Koenen, 1872 †) - (COLUMBELLIDAE) (FOSSIL)
- hosiusi, Boreodrillia hosiusi (A. von Koenen, 1872 † †) - (DRILLIIDAE) (FOSSIL)
- hosiusi, Solariorbis hosiusi (A.W. Janssen, 1967 †) - (TORNIDAE) (FOSSIL)
- hoskensae, Notovoluta hoskensae G.T. Poppe, 1992 - (VOLUTIDAE)
- hoskingae, Stutchburia hoskingae Dickins, 1963 † - (KALENTERIDAE) (FOSSIL)
- hoskini, Lorelliana hoskini Stanisic, 2016 - (CAMAENIDAE)
- hoskynsi, Pecten hoskynsi E. Forbes, 1844 - syn of: Cyclopecten hoskynsi (E. Forbes, 1844) - (PECTINIDAE)
- hoskynsi, Cyclopecten hoskynsi (E. Forbes, 1844) - (PROPEAMUSSIIDAE)
- hoskynsi imbrifer, Cyclopecten hoskynsi imbrifer (S.L. Lovén, 1846) - (PROPEAMUSSIIDAE)
- hoskynsi major, Pecten hoskynsi major W. Leche, 1883 - syn of: Cyclopecten hoskynsi (E. Forbes, 1844) - (PECTINIDAE)
- hosodai, Synprosphyma hosodai Hunyadi & Szekeres, 2016 - (CLAUSILIIDAE)
- hosodai, Turbo hosodai M. Tomida & Kadota, 2014 † - (TURBINIDAE) (FOSSIL)
- hosoi, Striodentalium hosoi (T. Habe, 1963) - (DENTALIIDAE)
- hosoi, Imaclava hosoi T.A. Okutani, 1964 - syn of: Crassispira hosoi (T.A. Okutani, 1964) - (DRILLIIDAE)
- hosoi, Splendrillia hosoi T.A. Okutani, 1964 - syn of: Crassispira hosoi (T.A. Okutani, 1964) - (DRILLIIDAE)
- hosoi, Crassispira hosoi (T.A. Okutani, 1964) - (PSEUDOMELATOMIDAE)
- hosoi, Clinura hosoi T.A. Okutani, 1964 - syn of: Crassispira hosoi (T.A. Okutani, 1964) - (RAPHITOMIDAE)
- hosonaga, Cymatosyrinx hosonaga Y. Otuka, 1949 † - (DRILLIIDAE) (FOSSIL)
- Hosoureites, Genus Hosoureites Sato, 1958 (CEPHALOPODA (UNASSIGNED)) (FOSSIL)
- Hosoureites, syn of: Genus Graphoceras Buckman, 1902 (GRAPHOCERATIDAE) (FOSSIL)
- hosourensis, Geratrigonia hosourensis (Yokoyama, 1904) † - (TRIGONIIDAE) (FOSSIL)
- hosourensis convexa, Geratrigonia hosourensis convexa Kobayashi, 1954 † - syn of: Geratrigonia convexa (Kobayashi, 1954 †) - (TRIGONIIDAE) (FOSSIL)
- hosoyai, Buccinum hosoyai T. Habe & K. Itô, 1965 - (BUCCINIDAE)
- hosoyai, Emarginula hosoyai T. Habe, 1953 - (FISSURELLIDAE)
- hosoyai, Neverita didyma hosoyai (T. Kira, 1959) - (NATICIDAE)
- hosoyai, Volva volva hosoyai K. Oyama, 1961 - (OVULIDAE)
- hosoyai, Gari hosoyai T. Habe, 1958 - syn of: Gari pallida (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- hosoyaka, Hemiphaedusa hosoyaka H.A. Pilsbry, 1905 - (CLAUSILIIDAE)
- hosoyana, Eulima hosoyana M. Yokoyama † - (EULIMIDAE) (FOSSIL)
- hospes, Helix hospes E. Caziot, 1902 - syn of: Marmorana serpentina hospitans (E.A. Rossmässler, 1836) - (HELICIDAE)
- hospes, Heliconoides hospes H. Rolle, 1861 † - (LIMACINIDAE) (FOSSIL)
- hospes, Bolloceras hospes (Barrande, 1877 †) - (NOTHOCERATIDAE) (FOSSIL)
- hospes, Phragmoceras hospes Barrande, 1877 † - syn of: Bolloceras hospes (Barrande, 1877 †) - (PHRAGMOCERATIDAE) (FOSSIL)
- hospes, Trocholites hospes Remele, 1880 † - (TROCHOLITIDAE) (FOSSIL)
- hospitali, Unio hospitali É.A.A. Locard, 1889 - syn of: Unio pictorum (C. Linnaeus, 1758) - (UNIONIDAE)
- hospitalis, Hydrorissoia elongata hospitalis R.A.M. Brandt, 1968 - (POMATIOPSIDAE)
- hospitalis, Macrochilina hospitalis J. Perner, 1903 † - (SOLENISCIDAE) (FOSSIL)
- hospitans, Marmorana serpentina hospitans (E.A. Rossmässler, 1836) - (HELICIDAE)
- hospitii, Chondrina hospitii P. Fagot, 1888 - syn of: Chondrina bigorriensis C. des Moulins, 1835 - (CHONDRINIDAE)
- hospitii, Abida hospitii H.A. Pilsbry, 1918 - syn of: Abida pyrenaearia A. Michaud, 1831 - (CHONDRINIDAE)
- hospitiorum, Charpentieria hospitiorum C. Pollonera, 1885 - syn of: Charpentieria dyodon thomasiana (H.C. Küster, 1850) - (CLAUSILIIDAE)
- hostiei, Cerastoderma edule hostiei (A.L. Chavan, 1945 †) - (CARDIIDAE) (FOSSIL)
- hosworthi, Turritella hosworthi Woods, in Bosworth, 1922 † - (TURRITELLIDAE) (FOSSIL)
- hosyu, Seguenzia hosyu T. Habe, 1953 - (SEGUENZIIDAE)
- hotawana, Formosana formosensis hotawana (H.A. Pilsbry, 1909) - (CLAUSILIIDAE)
- hotawana, Trochochlamys crenulata hotawana (H.A. Pilsbry & Y. Hirase, 1905) - (HELICARIONIDAE)
- hotchkissi, Ellesmeroceras hotchkissi Ulrich & al., 1944 † - (ELLESMEROCERATIDAE) (FOSSIL)
- hotei, Imaclava hotei (Y. Otuka, 1949) - (DRILLIIDAE)
- hotei, Coralliophila hotei (S. Kosuge, 1985) - (MURICIDAE)
- hotelensis, Lirophora hotelensis A.A. Olsson, 1922 † - (VENERIDAE) (FOSSIL)
- hotessieri, Columbella hotessieri D'Orbigny, 1845 - syn of: Costoanachis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (COLUMBELLIDAE)
- hotessieri, Nassarius hotessieri D'Orbigny, 1847 - syn of: Phrontis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (NASSARIIDAE)
- hotessieriana, Costoanachis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (COLUMBELLIDAE)
- hotessieriana, Anachis hotessieriana D'Orbigny, 1842 - syn of: Costoanachis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (COLUMBELLIDAE)
- hotessieriana, Columbella hotessieriana D'Orbigny, 1842 - syn of: Costoanachis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (COLUMBELLIDAE)
- hotessieriana, Opalia hotessieriana (A.V.M.D. D'Orbigny, 1842) - (EPITONIIDAE)
- hotessieriana, Phrontis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (NASSARIIDAE)
- hotessieriana, Nassa hotessieriana D'Orbigny, 1842 - syn of: Phrontis hotessieriana (A.V.M.D. D'Orbigny, 1842) - (NASSARIIDAE)
- hotessieriana, Tegula hotessieriana (A.V.M.D. D'Orbigny, 1842) - (TEGULIDAE)
- hotsoni, Euspira hotsoni C.S. Weaver & K.V.W. Palmer, 1922 † - (NATICIDAE) (FOSSIL)
- hotspringensis, Carteria hotspringensis Guex & al., 2005 † - (SPHINGITIDAE) (FOSSIL)
- hottenta, Crassispira hottenta E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (PSEUDOMELATOMIDAE)
- hottentota, Turricula hottentota K.H.J. Thiele, 1925 - syn of: Volutomitra hottentota (K.H.J. Thiele, 1925) - (CLAVATULIDAE)
- hottentota, Clavatula hottentota E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (CLAVATULIDAE)
- hottentota, Drillia hottentota E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (DRILLIIDAE)
- hottentota, Clavus hottentota E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (DRILLIIDAE)
- hottentota, Austrodrillia hottentota E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (HORAICLAVIDAE)
- hottentota, Crassispira hottentota E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (PSEUDOMELATOMIDAE)
- hottentota, Pleurotoma hottentota E.A. Smith, 1882 - syn of: Clavus hottentotus (E.A. Smith, 1882) - (TURRIDAE)
- hottentota, Volutomitra hottentota (K.H.J. Thiele, 1925) - (VOLUTOMITRIDAE)
- hottentotta, Microvoluta hottentotta K.H.J. Thiele, 1925 - syn of: Volutomitra hottentota (K.H.J. Thiele, 1925) - (VOLUTOMITRIDAE)
- hottentotus, Clavus hottentotus (E.A. Smith, 1882) - (DRILLIIDAE)
- hottentotus, Xerocerastus hottentotus (J.E. Gray, 1838) - (SUBULINIDAE)
- hottentotus fuscencens, Clavus hottentotus fuscencens (G.B. III Sowerby, 1921) - (DRILLIIDAE)
- hottingeri, Neoptychites hottingeri M. Collignon, 1967 † - (VASCOCERATIDAE) (FOSSIL)
- Hotumatua, Genus Hotumatua Kirch, Christensen & Steadman, 2008 (ACHATINELLIDAE)
- hotwellsensis, Rhineoderma hotwellsensis Batten, 1966 † - (PLATYCERATIDAE) (FOSSIL)
- hotzi, Deacheospira hotzi (Rohr, 1980 †) - (GOSSELETINIDAE) (FOSSIL)
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