""'Philine powelli " "'is a species of sea snail, a marine opisthobranch gastropod mollusk in the family Philinidae, the headshield slugs.
42.
""'Philine constricta " "'is a species of sea snail, a marine opisthobranch gastropod mollusk in the family Philinidae, the headshield slugs.
43.
""'Philine umbilicata " "'is a species of sea snail, a marine opisthobranch gastropod mollusk in the family Philinidae, the headshield slugs.
44.
An opisthobranch sea slug " Navanax inermis " has chemoreceptors on the sides of its mouth to track mucopolysaccharides in the slime trails of prey, and of potential mates.
45.
""'Cyerce kikutarobabai " "'is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Caliphyllidae.
46.
""'Polybranchia orientalis " "'is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Caliphyllidae.
47.
""'Elysia tomentosa " "'is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Plakobranchidae.
48.
""'Thuridilla carlsoni " "'is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Plakobranchidae.
49.
""'Thuridilla hopei " "'is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusks in the family Plakobranchidae.
50.
""'Costasiella coronata " "'is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Costasiellidae.
