Pallial /(?)/

Pal·li·al

Pallial

a.
  1. Of or pertaining to a mantle, especially to the mantle of mollusks; produced by the mantle; as, the pallial line, or impression, which marks the attachment of the mantle on the inner surface of a bivalve shell. See Illust. of Bivalve. (Zool.)

Phrases & Compounds
Pallial chamber
the cavity inclosed by the mantle.
Pallial sinus
an inward bending of the pallial line, near the posterior end of certain bivalve shells, to receive the siphon. See Illust. of Bivalve.