Hydrocenidae is a taxonomic family of minute land snails or cave snails with an operculum, terrestrial gastropod mollusks or micromollusks in the clade Cycloneritimorpha.
Placostylus, or flax snails, are a genus of very large, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Bothriembryontidae.
Succinea, common name the amber snails, is a large genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Succineidae.
Oxychilus is a genus of small air-breathing land snails, terrestrial pulmonate gastropods in the subfamily Oxychilinae of the family Oxychilidae, the glass snails.
Drymaeus is a large genus of medium-sized air-breathing, tropical land snails, terrestrial pulmonate gastropod molluscs in the subfamily Peltellinae of the family Bulimulidae.
Edentulina is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Streptaxidae.
Leiostyla is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Lauriidae.
Leptaxis is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Hygromiidae, the typical snails.
Melanopsis is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Melanopsidae.
Omphalotropis is a genus of minute salt marsh snails with an operculum, terrestrial gastropod mollusks in the subfamily Omphalotropidinae of the family Assimineidae.
Tropidophora is a genus of land snails with an operculum, terrestrial gastropod mollusks in the family Pomatiidae.
Truncatella is a genus of very small land snails with an operculum, terrestrial gastropod mollusks in the family Truncatellidae. These small and minute snails live on land, very close to seawater. They walk with a strange looping action, and the adults have truncated shells. Many of the species are small enough to be considered micromollusks.
Ludwig Karl Georg Pfeiffer, also known as Louis Pfeiffer, was a German physician, botanist and conchologist.
Cyclophorus is a genus of operculate land snails, terrestrial gastropod mollusks in the family Cyclophoridae.
Melampus is a genus of small air-breathing salt marsh snails, pulmonate gastropod mollusks in the family Ellobiidae.
Rhachistia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Cerastidae.
Bostryx is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Bulimulidae.
Cyclotopsis is a genus of small sea snails, marine gastropod mollusks in the family Tornidae.
Megaustenia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Ariophantinae of the family Ariophantidae.
Pleuropoma is a genus of land snails with an operculum. It is a genus of terrestrial gastropod mollusks in the subfamily Helicininae of the family Helicinidae.
