Patella, pallial branchiae forming a complete circle, no epipodial tentacles, British.
Nacella, epipodial tentacles present.
An epipodial ridge on each side of the foot and cephalic expansions between the tentacles often present.
Gibbula, with jaws, three pairs of epipodial cirri without pigment spots at their bases, British.
Margarita, five to seven pairs of epipodial cirri with a pigment spot at base of each.
Stomatella, foot truncated posteriorly, an oper culum present, no epipodial tentacles.
Shell spirally coiled; epipodial tentacles present; operculum thick and calcareous.
Epipodial fila L ments present; one or two pallial tentacles.
Foot divided into two, posterior half bearing the operculum; a wide epipodial velum; shell turbinated.
The first is flaccid and sluggish in its movements, and has not much power of contraction; its epipodial lobes are enormously developed and extend far forward along the body; it gives out when handled an abundance of purple liquid, which is derived from cutaneous glands situated on the under side of the free edge of the mantle.
Ep, epipodial outgrowths.
In the Amphipoda, the gills though arising from the inner side of the bases of the thoracic legs are probably also epipodial in nature.
The podobranchiae are clearly epipodites, or, more correctly, parts of the epipodites, and it is probable that the arthroand pleuro-branchiae are also epipodial in origin and have migrated from the proximal segment of the limbs on to the adjacent body-wall.