ἐπικάλυμμα [κᾰ], ατος, τό,
cover, veil, πλοῦτος πολλῶν ἐ. ἐστιν κακῶν 4th-3rd c.BC: Menander Comicus 90.
__II. in animals, covering of any orifice, of the gills of fish, [[ Arist. “HA” 505a1, “PA” 696b3 ] Refs]; of the opercula of crabs and other crustacea, [[ [prev. author] “HA” 527b26, 541b26, compare 530a21. ] Refs]