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Any large marine univalve shell of the genus Triton. See Triton.

ble snail, Pond snail, etc. See under Ear, Edible, etc. -- Snail borer (Zoöl.), a boring univalve mollusk; a drill. -- Snail clover (Bot.), a cloverlike plant (Medicago scuttellata, also, M. Helix); -- so named from its pods, which resemble the shells of snails; -- called also snail trefoil, snail medic, and beehive.…

Any marine univalve shell of the genus Rostellaria; -- called also spindle stromb.

ans. -- Sting ray. (Zoöl.) See under 6th Ray. -- Sting winkle (Zoöl.), a spinose marine univalve shell of the genus Murex, as the European species (Murex erinaceus). See Illust. of Murex.

Any marine univalve mollusk of the genus Strombus and allied genera. See Conch, and Strombus.

m, or impressed line, as between the segments of a crustacean, or between the whorls of a univalve shell. Glover's suture, Harmonic suture, etc. See under Glover, Harmonic, etc.

Any one of numerous species of marine univalve shells belonging to Trochus and many allied genera of the family Trochidæ. Some of the species are called also topshells.

length and tapering shape." Grove. -- Trumpet shell (Zoöl.), any species of large marine univalve shells belonging to Triton and allied genera. See Triton, 2. -- Trumpet tree. (Bot.) See Trumpetwood.

A large, handsomely colored, marine univalve shell (Fasciolaria tulipa) native of the Southern United States. The name is sometimes applied also to other species of Fasciolaria.

Same as Univalve, a.

One of the prominent ridges or ribs extending across each of the whorls of certain univalve shells.

Of the nature of warts; as, a warty excrescence. Warty egg (Zoöl.), a marine univalve shell (Ovulum verrucosum), having the surface covered with wartlike elevations.

he opening at the bottom of the tube. -- Weavers' shuttle (Zoöl.), an East Indian marine univalve shell (Radius volva); -- so called from its shape. See Illust. of Shuttle shell, under Shuttle.

A volution, or turn, of the spire of a univalve shell.