In addition to tentacles, there may be marginal cirri (Laodice) with a solid endodermal axis, spirally coiled, very contractile, and bearing a terminal battery of nematocysts.
Margarita, five to seven pairs of epipodial cirri with a pigment spot at base of each.
The cirri or tentacles, of which three or four pairs are present, are capable of being protruded, and the minute larva swims by means of the ciliary action they produce.
Gibbula, with jaws, three pairs of epipodial cirri without pigment spots at their bases, British.
The oral hood with its cirri has a special nerve supply and musculature by which the cirri can be either spread out, or bent inwards so that those of one side may interdigitate with those of the other, thus completely closing the entrance to the mouth.
A peculiar modification is found in the trunk-limbs of the Cirri pedia (fig.