Helicarion hakonensis H.A. Pilsbry & Y. Hirase,1905 Japan, Kanagawa
Nipponochlamys hakusanus (H.A. Pilsbry& Y. Hirase, 1907) Japan, Ishikawa
Helicarion helenae H.H. Godwin-Austen, 1883 Australia, Sydney
Helicarion helenkingae P.H. Scott, 1995 Australia, Townsville
Dendrotrochus helicinoides (J.B. Hombron& C.H. Jacquinot, 1841) Papua New Guinea, Admiralty Islands
Dendrotrochus helicinoides cleryi (C.A. Récluz, 1851) Philippines, Palawan Island6 mm
Geotrochus heraclea (E.A. Smith, 1895) Malaysia, Borneo
Hunsteinia hercules (C. Hedley, 1891)
Howearion hilli (J.C. Cox, 1873) New South Wales
Helicarion hiraseana H.A. Pilsbry, 1901 Congo, Pointe Noire
Parakaliella hizenensis (H.A. Pilsbry, 1902) Japan
Nipponochlamys hokkaidonis (H.A. Pilsbry& Y. Hirase, 1905) Japan, Hokkaido
Epiglypta howinsulae (J.C. Cox, 1873) Australia, Lord Howe Island
Irenella hoyti (A. Garrett, 1872) Fiji Islands
Helicarion huberi Thach, 2016
Trochochlamys humiliconus (H.A. Pilsbry& Y. Hirase, 1904) Japan, Mie
Helicarion hyaleus F.S. Bock, 1881 Indonesia
Hemiglypta iloilana M. Smith, 1932 Philippines
Helicarion imitatrix E.R. Sykes, 1900 Norfolk Island
Lutilodix imitratrix (E.R. Sykes, 1900) Norfolk Island
Helicarion imperator (A.A. Gould, 1859) China, Guangxi province31 mm
Caldwellia imperfecta unknown Madagascar
Harmogenanina implicata (G. Nevill, 1870) Mauritius
Parakaliella incerta (A. Adams, 1868) Japan
Helicarion infans (L. Pfeiffer, 1854) Malaysia, Borneo
Sesara infredens A.A. Gould Myanmar
Sesara infrendens (A.A. Gould, 1844) South Vietnam
Helicarion insculpta L. Pfeiffer, 1846 Norfolk Island
Pachystyla inversicolor (A.E.J. Férussac, 1821) Mauritius
Pachystyla inversicolor mauritianella (P.M.A. Morelet) Mauritius16 mm
Helicarion iridis I. Hyman, 2007 Australia, Kyogle
Geotrochus isabellensis (S.M. Souverbie, 1863) Solomon Islands17 mm
Nipponochlamys izushichitojimana (H.A. Pilsbry& Y. Hirase, 1904) Japan, Izu Islands
Helicarion kagaensis H.A. Pilsbry & Y. Hirase,1902 Japan, Ishikawa
Ovachlamys kandai M. Azuma, 1978 Japan