This is one of the six major gastropod lineages and contains a large number of terrestrial species in three families; Helicinidae and Proserpinidae in the superfamily Helicinoidea and Hydrocenidae in the superfamily Hydrocenoidea.
superfamily Helicinoidea
family Helicinidae [=Stoastomidae]
Operculate, terrestrial snails, distributed widely in the tropics and sub-tropics. Distributions were taken from “Compendium of Landshells” by R. Tucker Abbott, the website malacos.chez.com and the Discover Life website. An excellent resource for helicinids is Dr. Ira Richling’s website.
Genera:
Alcadia | New World subtropics, NE Atlantic Brazil [Introduced to Florida] |
Aphanoconia | SE Asia, Pacific Ids. |
Bourciera | Ecuador |
Calybium | Viet Nam |
Ceochasma | Mexico |
Ceratodiscus | Cuba, Dominican Republic |
Ceratopoma | Philippines, Australia, New Caledonia, Indonesia |
Emoda | Cuba |
Eutrochatella | Jamaica, Dominican Republic |
Excavata | Jamaica |
Fadyenia | West Indies |
Geophorus | Philippines, India, Sol. Isl., Malaysia, Viet Nam |
Geotrochatella | Thailand, Viet Nam |
Helicina | West Indies, Brasil, Florida |
Hemipoma | Japan |
Hendersonia | U.S. |
Lucidella | SE U.S., Mexico, West Indies, coastal Venezuela |
Microviana | Cuba |
Ogasawarana | Japan |
Oligyra | S. U.S., Mexico, W. Indies, Guyana |
Orobophana | Pacific Ids., Australia, New Zealand, Philippines |
Palaeohelicina | Australia |
Pleuropoma | Seychelles, Pacific Isl., SE Asia, Micronesia, Australia, Japan |
Priotrochatella | Cuba |
Pyrgodomus | Mexico, Central America |
Schasicheila | Mexico, Central America, Bahamas |
Stoastoma | Venezuela, Haita, Jamaica |
Stoastomops | Jamaica, Cayman Isl., Dominican Republic |
Sturanya | Somoa, Tonga, Fiji, Sol. Isl., Palau |
Sulfurina | Philippines, Andaman Isl., Malaysia, Micronesia, New Guinea |
Troschelviana | Cuba |
Ustronia | Cuba [Introduced to Florida] |
Viana | Cuba |
Waldemaria | Japan |
family Proserpinidae
Operculate, terrestrial snails, distributed widely in the tropics and sub-tropics. Distributions were taken from “Compendium of Landshells” by R. Tucker Abbott and the Discover Life website.
Genera:
Calidviana | Cuba |
Proserpina | Cuba, Jamaica, Dominican Republic, Haiti |
superfamily Hydrocenoidea
family Hydrocenidae
Operculate, terrestrial snails. They are minute, and several species are restricted to caves.
Genera:
Georissa | New Zealand, Australia, Madagascar, Japan, Sumatra |
Hydrocena | Society Ids., New Zealand, South Africa, Spain, Montenegro |
Monterissa | Australia |
Omphalorissa | New Zealand |