Search the Dictionary

situated on one side of the back, and protected by a fold of the mantle. When there is a shell, it is usually thin and delicate and often rudimentary. The aplysias and the bubble shells are examples.

A genus of marine bivalve mollusks having thin, delicate, and often handsomely colored shells.

Any one of numerous species of small, conical fossil shells found in Paleozoic rocks. They are supposed to be pteropods.

astropods having a long, tapering spire. They belong to the Toxoglossa. Called also auger shell.

perforated beak, through which projects a short peduncle for attachment. Called also lamp shell.

Having the general form of a terebratula shell.

Invertebrate animals covered with shells, especially mollusks; shellfish.

The science which treats of testaceans, or shellfish; the description of shellfish. [R.]

Of or pertaining to shells; consisted of a hard shell, or having a hard shell.

A division of brachiopods including those which have a calcareous shell furnished with a hinge and hinge teeth. Terebratula and Spirifer are examples.

Of or pertaining to the shell of a tortoise; resembling a tortoise shell; having the color or markings of a tortoise shell.

An order of reptiles which includes the turtles and tortoises. The body is covered by a shell consisting of an upper or dorsal shell, called the carapace, and a lower or ventral shell, called the plastron, each of which consists of several plates.

Resembling a tortoise shell in appearance or structure; roofed; arched; vaulted.

Resembling the shell of a tortoise.

of lyre; -- so called in allusion to the lyre of Mercury, fabled to have been made of the shell of a tortoise.

ing woven; formed by weaving; as, textile fabrics. Textile cone (Zoöl.), a beautiful cone shell (Conus textilis) in which the colors are arranged so that they resemble certain kinds of cloth.

An order of Pteropoda comprising those species which have a shell. See Pteropoda. -- The`co*so"ma*tous, a.

ne extending back from the eye, and one from the angle of the mouth. Called also tortoise-shell tiger. -- Mexican tiger (Zoöl.), the jaguar. -- Tiger beetle (Zoöl.), any one of numerous species of active carnivorous beetles of the family Cicindelidæ. They usually inhabit dry or sandy places, and fly rapidly. -- Tige…

A kind of shell or cartridge buried in earth, to be exploded by electricity or by stepping on it.

Box, Land, etc. -- Painted tortoise. (Zoöl.) See Painted turtle, under Painted. -- Soft-shell tortoise. (Zoöl.) See Trionyx. -- Spotted tortoise. (Zoöl.) A small American fresh-water tortoise (Chelopus, or Nanemys, quttatus) having a blackish carapace on which are scattered round yellow spots. -- Tortoise beetle (Z…