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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.

art which embraces the main action of a play, poem, and the like, and leads on to the catastrophe; -- opposed to protasis.

The after song; the part of a lyric ode which follows the strophe and antistrophe, -- the ancient ode being divided into strophe, antistrophe, and epode.

A tribe of Ophiuroidea, including the genera Euryale, Astrophyton, etc. They generally have the arms branched. See Astrophyton.

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

The final chorus; the catastrophe.

A genus of marine gastropod mollusks, having a conical or limpetlike shell, with an opening at the apex; -- called also keyhole limpet.

One of numerous species of marine gastropod shells, belonging to Ranella and allied genera.

Same as Gastropod.

Same as Gastropoda.

Same as Gastropodous.

issues which invest the teeth, and cover the adjacent parts of the jaws. Gum rash (Med.), strophulus in a teething child; red gum. -- Gum stick, a smooth hard substance for children to bite upon while teething.

A division of gastropods in which the odontophore is without teeth.

ack. The immature ones are called bluesides. -- Harp shell (Zoöl.), a beautiful marine gastropod shell of the genus Harpa, of several species, found in tropical seas. See Harpa.

An order of pelagic Gastropoda, having the foot developed into a median fin. Some of the species are naked; others, as Carinaria and Atlanta, have thin glassy shells.

An artificial division of gastropods, including those that have an entire aperture.

ive calomel, or bichloride of mercury. -- Horn shell (Zoöl.), any long, sharp, spiral, gastropod shell, of the genus Cerithium, and allied genera. -- Horn silver (Min.), cerargyrite. -- Horn slate, a gray, siliceous stone. -- To haul in one's horns, to withdraw some arrogant pretension. [Colloq.] -- To raise, or li…

An extensive artificial division of gastropod mollusks, including those that breathe by gills, as contrasted with the Pulmonifera. -- Hy`dro*bran"chi*ate, a.

Any gastropod of the genus Ianthina, of which various species are found living in mid ocean; -- called also purple shell, and violet snail. [Written also janthina.]