Conchology: alternatives and connections

That division of the Mollusca which includes the bivalve shells, like the clams and oysters; -- so called because they have no evident…

A division of Mollusca remarkable for the bilateral symmetry of the organs and the arrangement of the nerves.

A division of nudibranchiate Mollusca, in which the gills form a wreath or cluster upon the posterior part of the back. See Nudibranch…

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

A mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usua…

A glandular organ of bivalve mollusca, serving in part as a kidney.

A genus of oceanic heteropod Mollusca, having a thin, glassy, bonnet-shaped shell, which covers only the nucleus and gills.

A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustrati…

The highest class of Mollusca.

A group of nudibranchiate Mollusca having on the back papilliform or branched organs serving as gills.

The science of wealth; the science, or a branch of the science, of political economy.

A division of Mollusca having slender, cirriform appendages near the mouth; the Scaphopoda.

A soft tactile appendage of the mantle of many Mollusca, and of the parapodia of Annelida. Those near the head of annelids are Tentacu…

That class of Mollusca which includes the bivalve shells; the Lamellibranchiata. See Mollusca.

Composed of shells; containing many shells.

Having a head; -- said of most Mollusca; -- opposed to acephalous.

Pertaining to the epipodium of Mollusca.

Cast skins, shells, or coverings of animals; any parts of animals which are shed or cast off, as the skins of snakes, the shells of lo…