The snails and slugs gallery includes 270 illustrations. Snails and slugs are gastropod mollusks. There are many varieties, including sea snails, land snails, and freshwater snails. Slugs are simply snails without shells.

"The genus <em>Oliva</em> is so named from its resemblance in form to the olive. They are flesh-eaters."

Oliva Erythrostoma (Lamarck)

"The genus Oliva is so named from its resemblance in form to the olive. They are flesh-eaters."

"The genus <em>Oliva</em> is so named from its resemblance in form to the olive. They are flesh-eaters."

Oliva Peruviana (Lamarck)

"The genus Oliva is so named from its resemblance in form to the olive. They are flesh-eaters."

"The genus <em>Oliva</em> is so named from its resemblance in form to the olive. They are flesh-eaters."

Oliva Porphyria (Lamarck)

"The genus Oliva is so named from its resemblance in form to the olive. They are flesh-eaters."

The Green Ormer (Haliotis tuberculata) is an edible mollusk considered a delicacy.

Green Ormer

The Green Ormer (Haliotis tuberculata) is an edible mollusk considered a delicacy.

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.

"In these animals, which generally appear like small slugs, the branchi&aelig; are arranged along on each side of the back; the tentacles are not retractile; some species have a very singular appearance, the body being slender, and the gill-tifts supported at the extremities of lateral footstalks." &mdash; Goodrich, 1859

Eolis papillosa

"In these animals, which generally appear like small slugs, the branchiæ are arranged along on…

"Ruby-eyed Limpet, from the Antilles. If the common Limpet is alarmed, no human force, pulling in a direct line, can remove it."

Patella Granatina (Linnaeus)

"Ruby-eyed Limpet, from the Antilles. If the common Limpet is alarmed, no human force, pulling in a…

"The <em>Patella pectonata</em> is found i nthe Mediterranean." &mdash; Goodrich, 1859

Patella pectonata

"The Patella pectonata is found i nthe Mediterranean." — Goodrich, 1859

The common periwinkle (Littorina littorea) is an edible species of sea snail in the Littorinidae family of the winkles.

Common Periwinkle

The common periwinkle (Littorina littorea) is an edible species of sea snail in the Littorinidae family…

"Found in the vicinity of the Canary Isles, the shell is minute, glassy, and compressed." &mdash; Goodrich, 1859

Atlanta peronil

"Found in the vicinity of the Canary Isles, the shell is minute, glassy, and compressed." — Goodrich,…

"The species of the genus <em>Trochus</em> are found in all seas, and near to the shore in the clefts of rocks, especially in places where seaweeds grow luxuriantly."

Phorus Conchyliophorus (Borfu)

"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…

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

Physa Heterostropha

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

The shell of the Planorbis is thin, light and disk-like in form. The can creep along solid bodies, or swim upside-down through the water.

Planorbis Corneus (Linnaeus)

The shell of the Planorbis is thin, light and disk-like in form. The can creep along solid bodies, or…

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

Planorbis Trivolvis

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

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.

Deep-sea pteropod ooze, enlarged.

Pteropod ooze

Deep-sea pteropod ooze, enlarged.

"Shell-bearing Pteropoda. f, f, fins; l, liver; o, ovary; sh, shell." -Parker, 1900

Pteropoda

"Shell-bearing Pteropoda. f, f, fins; l, liver; o, ovary; sh, shell." -Parker, 1900

Kindred of the genus <em>Helix</em>.

Pupa Uva

Kindred of the genus Helix.

"The Purpuras have a classical name and history, having furnished the Greeks and Romans with the brilliant purple coloring matter which was reserved for the mantles of patricians and princes."

Purpura Consul.

"The Purpuras have a classical name and history, having furnished the Greeks and Romans with the brilliant…

"Purpura lapillus." -Taylor, 1904

Purpura lapillus

"Purpura lapillus." -Taylor, 1904

"The shell of the <em>cleodora pymidata</em> is triangular." &mdash; Goodrich, 1859

Cleodora pymidata

"The shell of the cleodora pymidata is triangular." — Goodrich, 1859

"The <em>M. regius</em> is found on the west coast of Central America, and suprasses all power of description in the beauty of its colorings." &mdash; Goodrich, 1859

Murex regius

"The M. regius is found on the west coast of Central America, and suprasses all power of description…

"Roman snail (Helix pomatia). Note shell covering visceral hump; p.ap., pulmonary aperture (including anus and opening of ureter); f., the foot; g.ap., genital aperture; m., mouth; e., eye on long horn; s.h., one of short horns." -Thomson, 1916

Roman Snail

"Roman snail (Helix pomatia). Note shell covering visceral hump; p.ap., pulmonary aperture (including…

"Snail (Helix pomatia) laying its eggs." -Thomson, 1916

Roman Snail Eggs

"Snail (Helix pomatia) laying its eggs." -Thomson, 1916

"The shell of <em>Limacina rostralis</em> resembles a small nautilus in form." &mdash; Goodrich, 1859

Limacina, rostralis

"The shell of Limacina rostralis resembles a small nautilus in form." — Goodrich, 1859

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphander

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scissurella crispata is a species of small sea snails in the Scissurellidae family.

Scissurella

Scissurella crispata is a species of small sea snails in the Scissurellidae family.

"Sea-lemon (Goniodoris nodosa). GONIODORIDIDAE. A family of nudibranchiate gastropods, typified by the genus Goniodoris, having a sessile or petiolated suctorial pharyngeal bulb." -Whitney, 1911

Sea Lemon

"Sea-lemon (Goniodoris nodosa). GONIODORIDIDAE. A family of nudibranchiate gastropods, typified by the…

"The Sea Lizard (Glaucus atlanticus) is a blue sea slug in the Glaucidae family of colorful sea slugs." -Whitney, 1911

Sea Lizard

"The Sea Lizard (Glaucus atlanticus) is a blue sea slug in the Glaucidae family of colorful sea slugs."…

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

Sea-snail

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

A snail shell.

Shell

A snail shell.

A pheasant sea shell.

Shell

A pheasant sea shell.

A long, slender sea shell.

Shell

A long, slender sea shell.

A short and wide sea shell.

Shell

A short and wide sea shell.

A spiral shaped sea shell.

Shell

A spiral shaped sea shell.

A sea shell.

Shell

A sea shell.

A swirl shaped shell.

Shell

A swirl shaped shell.

A spiral shaped shell.

Shell

A spiral shaped shell.

A shell with sharp points on each end.

Shell

A shell with sharp points on each end.

"Vertical section of the shell of a species of Helix. M., Mouth of shell; A., apex; C., columella." -Thomson, 1916

Shell

"Vertical section of the shell of a species of Helix. M., Mouth of shell; A., apex; C., columella."…

"Noted for a very long proboscis, sometimes twice the length of the shell. The latter is turretted, smooth, white, and spotted with light red." &mdash; Goodrich, 1859

Bishop's mitre shell

"Noted for a very long proboscis, sometimes twice the length of the shell. The latter is turretted,…

A type of seashell.

Boat Shell

A type of seashell.

The cone shells are numerous and beautiful found in southern and tropical seas.

Cone Shell

The cone shells are numerous and beautiful found in southern and tropical seas.

Limpets are attractive little gasteropods which are left uncovered when the tide is low.

Limpet, Shell

Limpets are attractive little gasteropods which are left uncovered when the tide is low.

A shell reversed in its spiral.

Reverse Shell

A shell reversed in its spiral.

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 top shell, <em>T. marmoratus</em>, has a turbinated solid shell, with convex whorls." &mdash; Goodrich, 1859

Top shell

"The top shell, T. marmoratus, has a turbinated solid shell, with convex whorls." — Goodrich,…

A spiral univalve shell.

Univalve shell

A spiral univalve shell.

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

Apple Shells

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

"A gastropod of the family Ovulidae and genus Radius, as R. volva, of long fusiform shape, the ends of the lips being greatly drawn out; so called from the resemblance to a weavers' shuttle." -Whitney, 1911

Shuttle Shell

"A gastropod of the family Ovulidae and genus Radius, as R. volva, of long fusiform shape, the ends…

"Siliques. 1. Of Cardamine bulbosa. 2. Of Raphanus Raphanistrum. 3. Of Heliophila crithmifolia." -Whitney, 1911

Siliques

"Siliques. 1. Of Cardamine bulbosa. 2. Of Raphanus Raphanistrum. 3. Of Heliophila crithmifolia." -Whitney,…

The shell of a Slit Worm Snail (Siliquaria anguina). The species is a gastropod mollusc that has an eloongated shell with a narrow slit down its length.

Slit Worm Snail

The shell of a Slit Worm Snail (Siliquaria anguina). The species is a gastropod mollusc that has an…

Slugs are air-breathing, terrestrial gastropods, almost always destitute of a shell. Slugs are nocturnal, hence are less conspicuous than snails.

Slug

Slugs are air-breathing, terrestrial gastropods, almost always destitute of a shell. Slugs are nocturnal,…