L.
Labra, the lips.
Laciniate, jagged or cut into irregular segments.
Lacunose, having the surface covered with pits.
Lamellar, consisting of films on plates.
Lamellated, divided into distinct plaits or foliations.
Laminæ, thin plates, laid one coat above another.
Lanceolate, oblong, and gradually tapering like the head of a lance.
Lateral, extending to one side from the centre.
Latticed, having longitudinal lines or furrows, decussate by transverse ones.
Lenticulate, doubly convex, of the form of a lens.
Ligament, a solid body, softer than a cartilage, but harder than a membrane, which connects the valves in bivalves.
Limb, the margin of bivalve shells.
Linear, composed of lines.
Lineate, marked with lines.
Lip, the outer edge of the aperture of univalves.
Littoral, of or belonging to the shore.
Lobated, rounded at the edges.
Longitudinal, the length of the shell from the apex to the base.
Lubricity, slipperiness, smoothness of surface.
Lunated, formed like a half moon.
Lunulated, crescent-shaped.
Lunule, a crescent-like mark or spot, situated near the anterior and posterior slopes in bivalve shells.
Luniform, in the shape of a crescent.