Mangelia hiradoensis (J. Makiyama, 1927)
Eucithara hirasei (H.A. Pilsbry, 1904)
Bela hispida (FOSSIL) (L.M.D. Bellardi, 1877 †)
Bela hispidula (FOSSIL) (L.M.D. Bellardi, 1847 †)
Obesotoma hokkaidoensis (P. Bartsch, 1941)
Oenopota holomera É.A.A. Locard, 1897
Mangelia hontensis (FOSSIL) M. Csepreghy, 1953 †
Mangelia hooveri R. Arnold, 1903
Fusiguraleus hordeum (FOSSIL) (R.A. Philippi, 1887 †)
Mangelia horneana E.A. Smith, 1884
Antiguraleus howelli (C.F. Laseron, 1954)
Pseudorhaphitoma hulda K.H.J. Thiele, 1925
Kurtzia humboldti J.H. McLean & L.H. Poorman,1971
Neoguraleus huttoni (E.A. Smith, 1915)
Mangelia hyemalis (J.F. Mabille& A. de Rochebrune, 1889)
Ithycythara hyperlepta F. Haas, 1953
Belidaphne hypoglypta (FOSSIL) (C.F. Fontannes, 1882 †)
Pseudorhaphitoma ichthys (J.C. Melvill, 1910)
Obesotoma iessoensis (E.A. Smith, 1875)
Oenopota impressa (O.A.L. Mörch, 1869)
Curtitoma incisula (A.E. Verrill, 1882)
Guraleus incrusta (J.E. Tenison-Woods,1877)
Mangelia indistincta (T.A. de M. Monterosato,1875)
Tenaturris inepta (E.A. Smith, 1882)
Oenopota inequita (W.H. Dall, 1919)
Antiguraleus infandus (W.H. Webster, 1906)
Pseudorhaphitoma informis C. Hedley, 1922
Leiocithara infulata (C. Hedley, 1909)
Marita inornata (G.B. III Sowerby, 1896)
Marita insculpta (Adams & G.F. Angas,1864)
Perimangelia interfossa (P.P. Carpenter, 1864)
Macteola interrupta (L.A. Reeve, 1846)
Neoguraleus interruptus A.W.B. Powell, 1942
Eucithara interstriata (E.A. Smith, 1876)
Mangelia inusitata E. Rolán & J. Otero-Schmidt,1999