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Of or pertaining to porcelain; resembling porcelain; as, porcelaneous shells.

here are red, purple, and green varieties, which are highly esteemed as marbles. Porphyry shell (Zoöl.), a handsome marine gastropod shell (Oliva porphyria), having a dark red or brown polished surface, marked with light spots, like porphyry.

used principally to ignite the priming in proving guns, and as an incendiary material in shells.

A river tortoise; one of a group of tortoises (Potamites, or Trionychoidea) having a soft shell, webbed feet, and a sharp beak. See Trionyx.

, etc.; neighborhood without the intervention of anything that forbids intercourse. Wrath shell be no more Thenceforth, but in thy presence joy entire. Milton.

A subdivision of the tænioglossate gastropods, including the fig-shells (Pyrula), the helmet shells (Cassis), the tritons, and allied genera.

A shell, used as a die. See Props.

A game of chance, in which four sea shells, each called a prop, are used instead of dice.

The embryonic shell, or first chamber, of ammonites and other cephalopods.

gastropods having the outer border of the lip divided into lobes; -- called also scorpion shell.

A genus of air-breathing land snails having an elongated spiral shell. Coarctate, or Obtected, pupa, a pupa which is incased in the dried-up skin of the larva, as in many Diptera. -- Masked pupa, a pupa whose limbs are bound down and partly concealed by a chitinous covering, as in Lepidoptera.

Any shell of the genus Purpura.

A genus of marine gastropods, usually having a rough and thick shell. Some species yield a purple dye.

ered with pustulelike prominences; pustular; pustulous; as, a pustulate leaf; a pustulate shell or coral.

The shell of a nut; the stone of a drupe fruit. See Endocarp.

The condition of being putrefied; also, that which putrefied. "Putrefaction's breath." Shelley.

A genus of large marine gastropods. having a pear-shaped shell. It includes the fig-shells. See Illust. in Appendix.

In so far as; in the capacity or character of; as. It is with Shelley's biographers qua biographers that we have to deal. London Spectator.

Rest; repose; quiet; tranquillity. Shelley.

Order of rhizopods, usually having a siliceous skeleton, or shell, and sometimes radiating spicules. The pseudopodia project from the body like rays. It includes the polycystines. See Polycystina.