le pas

[Lat., from Gr. lepás a limpet; so called from clinging to lep as =a rock. This is not the modern genus.] Zool .: Barnacle; the typical genus of the family Lepadide. The animal begins life like an entomostracous crustacean, with a broad carapace, a single eye, two pairs of antenne, three pairs of jointed, branched, and well-bristled legs, and a forked tail. Finally it becomes a stalked cirriped attached to the back of a whale or a turtle, or to the solid rock.