A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name snail is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails. Gastropods that naturally lack a shell, or have only an internal shell, are mostly called slugs, and land snails that have only a very small shell are often called semi-slugs.
Käthe Hoffmann was a German botanist who described many plant species in New Guinea and South East Asia including Annesijoa novoguineensis. She was a professor at Breslau, German Empire, and made a significant contribution to botany. In one study, she was found to have co-authored or authored 354 land plant species, the sixth-highest number authored by any female scientist. As of May 2020, Plants of the World Online lists 439 accepted genera and species which include Käthe Hoffmann in the authority, in some capacity.
Athoracophoridae, common name the leaf-veined slugs, are a family of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the infraorder Stylommatophora, the stalk-eyed snails and slugs. Many of the species have an attractive pattern on their dorsal surface which resembles the veins in a leaf, hence the common name.
Anisus septemgyratus is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Charpentieria is a genus of small, very elongate, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Clausiliidae, the door snails, all of which have a clausilium.
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. Land snail is the common name for terrestrial gastropod mollusks that have shells. However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water.
Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea.
Camaenidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea, the typical snails and their allies. This is one of the most diverse families in the clade Stylommatophora.
Radix peregra, previously known as Lymnaea peregra or Lymnaea pereger, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Lymnaeidae, the pond snails.
Chilostoma faustina is a species of medium-sized, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the true snails.
Emil Adolf Rossmässler was a German biologist. With Otto Eduard Vincenz Ule and Karl Johann August Müller, he was co-founder of the journal Die Natur. He was also one of the co-founders of Die Gartenlaube. Rossmässler was one of the early writers on the building and maintaining of freshwater aquariums.
A love dart is a sharp, calcareous or chitinous dart which some hermaphroditic land snails and slugs create. Love darts are both formed and stored internally in a dart sac. These darts are made in sexually mature animals only, and are used as part of the sequence of events during courtship, before actual mating takes place. Darts are quite large compared to the size of the animal: in the case of the semi-slug genus Parmarion, the length of a dart can be up to one fifth that of the semi-slug's foot.
Charpentieria ornata is a species of small, very elongate, air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Clausiliidae, the door snails, all of which have a clausilium.
Siciliaria crassicostata is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.
Siciliaria is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Clausiliidae, all of which have a clausilium.
Argna bielzi is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Argnidae.
Suavodrillia declivis is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.
Pupilla bigranata is a nomen dubium that was used for some forms of the land snails Pupilla triplicata and Pupilla muscorum (Pupillidae), but none of these forms represent a separate species, therefore such species as Pupilla bigranata does not exist.
Ramusculus subulatus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Enidae.
Mattauschia is an extinct genus of trematopid temnospondyls from the Late Carboniferous of the Czech Republic.
