58 Gastropods described in 1863

Aldisa sanguinea, common name the blood-spot dorid, is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

Antiopella barbarensis, common name Santa Barbara janolus, is a colourful sea slug, a cladobranch nudibranch, a marine gastropod mollusc in the family Janolidae.

Aplysia argus is a species of gastropod mollusc in the genus Aplysia, native to the Indo-Pacific region.

Armina californica is a species of sea slug, a nudibranch, a marine gastropod mollusk in the family Arminidae.

Astele monile, common name the Australian necklace, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Astele similaris is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Astralium lapillus is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.

Austrocochlea constellata is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Babella caelatior is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The species is one of twelve in the gastropod genus Babella.

Bacula striolata is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. The species is one of three known species within the genus Bacula, the other two being Bacula lamberti and Bacula morisyuichiroi.

Berthellina quadridens is a species of sea slug, a marine gastropod mollusc in the family Pleurobranchidae.

Bolma guttata, common name the sandpaper bolma, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.

The California sea hare is a species of sea slug in the sea hare family, Aplysiidae. It is found in the Pacific Ocean, off the coast of California in the United States and northwestern Mexico.

Calliostoma incertum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Calliostoma ocellatum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Calliostoma scobinatum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Cantharidella tiberiana is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Cantharidus fournieri is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Cremnoconchus syhadrensis is a species of freshwater snail, an aquatic gastropod mollusk in the family Littorinidae, the winkles or periwinkles.

Dendrodoris krebsii is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Dendrodorididae.

Dendronotus iris is a species of sea slug, a dendronotid nudibranch, a shell-less marine gastropod mollusc in the family Dendronotidae.

Diala suturalis is a species of sea snail, a marine gastropod mollusk in the family Dialidae.

Doriopsilla albopunctata, the white-spotted sea goddess, is a species of dorid nudibranch, a colorful sea slug, in the family Dendrodorididae. It is native to the Pacific Coast of North America, from Mendocino County, California south, possibly to Baja California Peninsula, Mexico.

The dwarf sea hare or pygmy sea hare, Aplysia parvula, is a species of sea hare, a marine gastropod mollusc in the family Aplysiidae.

Elysia crispata, common name the lettuce sea slug, is a large and colorful species of sea slug, a marine gastropod mollusk.

Emarginula costulata is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.

Emarginula decorata is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.

Emarginula maculata is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.

Eoacmaea profunda is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae, one of the families of true limpets.

Eucyclotoma bicarinata is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

Ferrissia californica is a species of small freshwater limpet, an aquatic gastropod mollusk in the family Planorbidae.

Fossarina patula is a species of very small sea snail, a marine gastropod mollusc or micromollusk in the family Trochidae, the top snails.

Gonospira uvula is a species of small air-breathing land snail, terrestrial pulmonate gastropod mollusk in the family Streptaxidae.

Hemitoma cumingii is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.

Hermissenda opalescens is a species of brightly coloured sea slug or nudibranch, a marine gastropod mollusc in the family Facelinidae.

Kermia maculosa is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

Leptothyra filifer is a species of sea snail, a marine gastropod mollusk in the family Colloniidae.

Linopyrga tantilla is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

Lirularia iridescens is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Littoridinops monroensis is a species of very small aquatic snail, an operculate gastropod mollusk in the family Hydrobiidae.

Lobiger viridis is a species of small sea snail, a marine gastropod mollusk in the family Oxynoidae.

Munditiella ammonoceras is a species of sea snail, a marine gastropod mollusk in the family Skeneidae,.

Navanax inermis, common name the California aglaja, is a large species of predatory sea slug, a marine opisthobranch gastropod mollusk in the family Aglajidae. Navanax is not a nudibranch, even though it somewhat resembles one; it belongs to a more ancient lineage of opisthobranchs called the cephalaspideans or head shield slugs and snails.

Odostomia umbilicaris is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

Otitoma cyclophora is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Platydoris angustipes is a species of sea slug, a dorid nudibranch, shell-less marine opisthobranch gastropod mollusks in the family Discodorididae.

Pleurobranchus areolatus is a species of pleurobranchid sea slug, a type of marine gastropod mollusc, commonly found in the Caribbean Sea. It is up to 15 cm long and it feeds on ascidians.

Prototyphis angasi is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.

The red triangle slug is a species of large air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Athoracophoridae, the leaf-veined slugs.

Smaragdia souverbiana is a species of sea snail, a marine gastropod mollusk in the family Neritidae.

Flabellinopsis iodinea is a species of aeolid nudibranch, a very colorful sea slug. This is a marine gastropod mollusk in the family Flabellinidae.

Stomatella stellata is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Synaptocochlea caliginosa is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Trigonaphera bocageana is a species of sea snail, a marine gastropod mollusk in the family Cancellariidae, the nutmeg snails.

Triopha catalinae, commonly known as the sea clown triopha or sea clown, is a species of colorful sea slug called a nudibranch. Sea clowns are a shell-less marine, gastronomic mollusk in the taxonomic family Polyceridae.

Turcica imperialis is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.

Vaceuchelus semilugubris is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.

Vokesimurex sobrinus is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.