FIGURE 4 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea

FIGURE 4. Megabalanus zebra (Darwin, 1854) right parietal plates from a specimen collected from the Progression hull at Chaguaramas, Trinidad (MNRJ 25247). A, external view; B, internal view. al = alae; sh = sheath; rd = radius; c = carina; cl1 = carinolatus 1; cl2 = carinolatus 2. Scale bar = 5 mm.