Helicinidae is a family of small tropical land snails which have an operculum. They are terrestrial operculate gastropod mollusks in the superfamily Helicinoidea.
Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum. The family Neritidae includes marine genera such as Nerita, marine and freshwater genera such as Neritina, and freshwater and brackish water genera such as Theodoxus.
Helicina is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks.
Ogasawarana is a genus of land snails with an operculum, terrestrial gastropod mollusk in the family Helicinidae, the helicinids.
Assimineidae is a family of minute snails, also known as palmleaf snails, with an operculum, gastropod mollusks or micromollusks in the superfamily Rissoidae. Many of these very small snails live in intermediate habitats, being amphibious between saltwater and land; others live in freshwater.
The Columbellidae, the dove snails or dove shells, are a family of minute to small sea snails, marine gastropod mollusks in the order Neogastropoda.
Cycloneritida is an order of land snails, freshwater snails, and sea snails.
Tectura is a genus of small to medium-sized sea snails, true limpets, marine gastropod mollusks in the family Lottiidae. Tectura comes from Latin tegō.
Helicina guppyi is a species of tropical land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae.
Helicina rhodostoma is a species of tropical land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae.
Lucidella is a genus of land snails with an operculum, terrestrial gastropod mollusks in the subfamily Vianinae of the family Helicinidae.
Capulus is a genus of small sea snails, marine gastropod mollusks in the family Capulidae, the cap snails.
Viana is a genus of land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae.
Volvatella is a genus of sea snails, bubble snails, a marine gastropod sacoglossan mollusk in the family Volvatellidae.
Cytharopsis is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Eucithara paucicostata is a small sea snail, a marine gastropod mollusk in the family Mangeliidae.
Olivellopsis is a genus of sea snails, marine gastropod mollusks in the family Bellolividae.
Nesiocina 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.
Sturanya 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.
