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One of the Gastropoda. [Written also gasteropod.]

One of the classes of Mollusca, of great extent. It includes most of the marine spiral shells, and the land and fresh-water snails. They generally creep by means of a flat, muscular disk, or foot, on the ventral side of the body. The head usually bears one or two pairs of tentacles. See Mollusca. [Written also Gasterop…

Of or pertaining to the Gastropoda.

Those Gastropoda that breathe by branchiæ, including the Prosobranchiata and Opisthobranchiata.

Not possessing a mantle; -- said of certain gastropods.

With a narrow mouth, as the shell of certain gastropods.

A primary division of gastropods, including those having spiral shells. The two sides of the body are unequally developed.

A group of Gastropoda, with limpetlike shells, including the abalone shells and keyhole limpets.

n angular projection on one or both sides, as in certain bivalve shells, the foot of some gastropods, etc. Auriculate leaf, one having small appended leaves or lobes on each side of its petiole or base.

A marine gastropod of the genus Crepidula. The species are numerous. It is so named from its form and interior deck.

Having gills; branchiate; as, branchiferous gastropods.

A gastropod shell belonging to the family Cerithiïdæ; -- so called from its hornlike form.

One of a group of gastropod mollusks, with a shell composed of eight movable dorsal plates. See Polyplacophora.

Having a mantle; -- applied to certain gastropods.

A subclass of gastropod mollusks in which the sexes are separate. It includes most of the large marine species, like the conchs, cones, and cowries.

An order of gastropods, including the true limpets, and having the teeth on the odontophore or lingual ribbon.

A marine gastropod, of several species, which kills oysters and other bivalves by drilling holes through the shell. The most destructive kind is Urosalpinx cinerea. Bow drill, Breast drill. See under Bow, Breast. -- Cotter drill, or Traverse drill, a machine tool for drilling slots. -- Diamond drill. See under Diamon…

A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.

One of the lateral lobes of the foot in certain gastropods.

A large division of gastropod molluske, including the Pulmonifera and Opisthobranchiata.