"A genus of land-snails, of the family Helicidæ. Typified by the large agate-shells of Africa."-Whitney, 1902

Agate Shell

"A genus of land-snails, of the family Helicidæ. Typified by the large agate-shells of Africa."-Whitney,…

"Ammonites obtusus." — Chambers' Encyclopedia, 1875

Ammonite

"Ammonites obtusus." — Chambers' Encyclopedia, 1875

"Ammonites nodosus." — Chambers' Encyclopedia, 1875

Ammonite

"Ammonites nodosus." — Chambers' Encyclopedia, 1875

"The species are numerous, and are chiefly found in the fresh waters of tropical and subtropical countries, many of them being known as apple-shells and idol-shells."-Whitney, 1902

Apple Shell

"The species are numerous, and are chiefly found in the fresh waters of tropical and subtropical countries,…

A group of carnivorous beetles that mainly feed on snails.

Carrion Beetle

A group of carnivorous beetles that mainly feed on snails.

A group of carnivorous beetles that mainly feed on snails.

Carrion Beetle

A group of carnivorous beetles that mainly feed on snails.

Scene from the story, "Snail."

Child and Snail

Scene from the story, "Snail."

A type of shell.

Clymenia

A type of shell.

A family of irregular sea urchins, flattened into a discoidal or shield like shape, with a mouth central and furnished with a masticatory apparatus.

Clypeastrid

A family of irregular sea urchins, flattened into a discoidal or shield like shape, with a mouth central…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Gloria Maris (Chemn.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Nobilis (Linn.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Tescallatus (Born.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Textilis (Linn.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

A mollusk radiate from the Paleozoic time, Cyclonema cancellata from the Clinton group.

Cyclonema Mollusk

A mollusk radiate from the Paleozoic time, Cyclonema cancellata from the Clinton group.

The shell of the Fig Shell Snail (Ficula ficus), a sea snail in the Ficidae family.

Fig Shell

The shell of the Fig Shell Snail (Ficula ficus), a sea snail in the Ficidae family.

Fu'sus is a genus of gastropods, which are allied to the British whelk and American conch, and which include, in F. colosseus, perhaps the largest living gastropod. The shell is fusiform, with a many-whorled spire and a long, straight canal. One species, F. antiguus, is dredged in the seas about Great Britain to be sold in the London markets as food.

Fu'sus

Fu'sus is a genus of gastropods, which are allied to the British whelk and American conch, and which…

A remarkable species of the genus <em>Fusus</em>.

Fusus Colus

A remarkable species of the genus Fusus.

A remarkable species of the genus <em>Fusus</em>.

Fusus Pagodus

A remarkable species of the genus Fusus.

A remarkable species of the genus <em>Fusus</em>.

Fusus Proboscidiferus

A remarkable species of the genus Fusus.

The shell of Anchura (Drepancheilus) Americana, a species of gastropod.

Anchura Gastropod

The shell of Anchura (Drepancheilus) Americana, a species of gastropod.

The exterior of the shell of Bulla speciosa, a species of gastropod.

Exterior of Bulla Gastropod

The exterior of the shell of Bulla speciosa, a species of gastropod.

The interior of the shell of Bulla speciosa, a species of gastropod.

Interior of Bulla Gastropod

The interior of the shell of Bulla speciosa, a species of gastropod.

The shell of Fasciolario buccinoides, a species of gastropod.

Fasciolario Gastropod

The shell of Fasciolario buccinoides, a species of gastropod.

The shell of Pyrifusus Newberryi, a species of gastropod.

Pyrifusus Gastropod

The shell of Pyrifusus Newberryi, a species of gastropod.

In high orders of Mollusca the circulation resembles that of fish. Shown is the heart and arteries of a snail. Labels: 2, The stomach. 3, Intestines. 5, Heart. 6, Aorta. 7, Pulmonary artery.

The Heart and Arteries of a Snail

In high orders of Mollusca the circulation resembles that of fish. Shown is the heart and arteries of…

Helix refers to a genus of snails. They are generally found in cool, damp environments, as they easily suffer from moisture loss.

Helix

Helix refers to a genus of snails. They are generally found in cool, damp environments, as they easily…

"Many species hibernate. The land-snails bury themselves in the ground, or conceal themselves under the back of trees, in holes in walls, or even in the stems of large umbelliferous plants. They close the mouth of the shell with a calcareous plate, technically called an epiphragm, which they secrete by means of their mantle, and which is perforated by a small hole to admit the air." &mdash; Encyclopediia Britannica, 1893

Helix Descrtorun

"Many species hibernate. The land-snails bury themselves in the ground, or conceal themselves under…

A common snail of stagnant ponds.

Limnaea Elodes

A common snail of stagnant ponds.

An illustration of a maclurites, an extinct genus of snails.

Maclurites

An illustration of a maclurites, an extinct genus of snails.

An illustration of the operculum of the maclurites, an extinct genus of snails.

Operculum of Maclurites

An illustration of the operculum of the maclurites, an extinct genus of snails.

"[From left to right:] Snail-shell and Egg, Ostrea and Spondylus, Carinaria, Vitreous Carinaria." &mdash; Goodrich, 1859

Mollusca

"[From left to right:] Snail-shell and Egg, Ostrea and Spondylus, Carinaria, Vitreous Carinaria." —…

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

Goniatites Mollusk

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

Many mollusks live upon seaweeds, and the greater number of terrestrial forms are fond of garden vegetables. The food needs to be masticated and the mouth is usually provided with horny jaws, and an additional matricatory apparaus which consists of a kind of tongue with eight to forty thousand minute teeth in our land forms, while in certain marine snails they are beyond computation. With the licking motion of the tongue this rasp tears the food into shreds before it is swallowed. Shown here is a small portion of the radula or tongue-rasp of a snail.

Snail

Many mollusks live upon seaweeds, and the greater number of terrestrial forms are fond of garden vegetables.…

A sea shell.

Natica

A sea shell.

"Gyroceras goldfussi. GYROCERATIDAE. A family of nautiliform shells of a discoidal shape, in which the last whorl is parallel with the others, all being connected." -Whitney, 1911

Nautiloid

"Gyroceras goldfussi. GYROCERATIDAE. A family of nautiliform shells of a discoidal shape, in which the…

"The polished nerita, <em>Nerita polita</em>, is distributed through nearly all tropical seas." &mdash; Goodrich, 1859

Polished nerita

"The polished nerita, Nerita polita, is distributed through nearly all tropical seas." —…

A characteristic snail of freshwater ponds. Female on left, male on right.

Paludina Decisa

A characteristic snail of freshwater ponds. Female on left, male on right.

The common species of left-handed snail of brooks and ponds.

Physa Heterostropha

The common species of left-handed snail of brooks and ponds.

Frogs and snails

Pictorial divider

Frogs and snails

A common pond and river snail. Side and bottom views.

Planorbis Trivolvis

A common pond and river snail. Side and bottom views.

A mollusk radiate from the Paleozoic time, Platyceras angulatum from the Niagara group.

Platyceras Mollusk

A mollusk radiate from the Paleozoic time, Platyceras angulatum from the Niagara group.

This species is known as the Sea-spiders or Scorpion-shells.

Pteroceras Chiragra (Linnaeus)

This species is known as the Sea-spiders or Scorpion-shells.

This species is known as the Sea-spiders or Scorpion-shells.

Pteroceras Lambis (Linnaeus)

This species is known as the Sea-spiders or Scorpion-shells.

This species is known as the Sea-spiders or Scorpion-shells.

Pteroceras Millepeda (Linnaeus)

This species is known as the Sea-spiders or Scorpion-shells.

This species is known as the Sea-spiders or Scorpion-shells.

Pteroceras Scorpio (Linnaeus)

This species is known as the Sea-spiders or Scorpion-shells.

"Four inches long; found in the European seas." &mdash; Goodrich, 1859

Sea-snail

"Four inches long; found in the European seas." — Goodrich, 1859

A long, slender sea shell.

Shell

A long, slender sea shell.

A type of seashell.

Boat Shell

A type of seashell.

A shell used for games.

Sea Shell

A shell used for games.

Parts of a snail shell.

Snail Shell

Parts of a snail shell.

A kind of snail shell; the left-hand shell.

Snail Shell

A kind of snail shell; the left-hand shell.

A kind of snail shell; the flat spiral or discoid shell.

Snail Shell

A kind of snail shell; the flat spiral or discoid shell.

A kind of snail shell; the right -hand shell.

Snail Shell

A kind of snail shell; the right -hand shell.

The Snail Shell was commonly used during the Renaissance as a drinking vessel.

Snail Shell

The Snail Shell was commonly used during the Renaissance as a drinking vessel.

Ampullaria, one of the Apple Shells. (o) operculum; (s) respiratory tube.

Apple Shells

Ampullaria, one of the Apple Shells. (o) operculum; (s) respiratory tube.

Slugs are terrestrial gastropods.

Slug

Slugs are terrestrial gastropods.

"Snail is the common name of gasteropodous mollusks. They feed chiefly on vegetable substances, though they are very indiscriminate in their appetite and even devour the dead of their own kind. The mischief which they do to garden crops is well known. Snails delight in warm, moist weather; in dry weather, their chief time of activity is during the night, and they hide themselves by day; but after rain they come forth at any hour in quest of food. At the approach of winter or in very dry weather they close the mouth of the shell with a membrane (epiphragm), formed by the drying of the mucous substance which they secrete, and become inactive and torpid."&mdash;(Charles Leonard-Stuart, 1911)

Snail

"Snail is the common name of gasteropodous mollusks. They feed chiefly on vegetable substances, though…

"Soft unsegmented bodies, bilaterally symmetrical, enveloped by a leathery mantle, which usually develops a hard shell-covering, or external skeleton; a symmetrical nervous system, consisting of several connected nerve bunches, or ganglia. Such is the snail." &mdash; Hinman, 1888

Snail

"Soft unsegmented bodies, bilaterally symmetrical, enveloped by a leathery mantle, which usually develops…

A gasteropodous mollusk, differing from the slug in having a large, spiral shell. The species are very numerous, varing somewhat in habits and size, and inhabiting practically all regions where fresh water is obtainable.

Snail

A gasteropodous mollusk, differing from the slug in having a large, spiral shell. The species are very…

Diagram of the mouth of a snail, showing the lingual ribbon. br, brain; c, buccal cavity; co., caelom; g, gullet; j, jaw, against which the radula works; m, mouth; r., radula; r.s., radula sac, in which the radula is renewed as it is worn away in front.

Snail

Diagram of the mouth of a snail, showing the lingual ribbon. br, brain; c, buccal cavity; co., caelom;…