Gujarat barnacles A Striatobalanus tenuis (Hoek, 1883) on gastropod shell (Murex ternispina Lamarck, 1822) B top view of Striatobalanus tenuis (BD: 11.28 mm) LFSc.ZRC-157 C external and internal view of scutum and tergum D Megabalanus tintinnabulum on shores LFSc.ZRC-182 E external and internal view of scutum and tergum F Amphibalanus amphitrite (Darwin, 1854), top view, (BD: 12.38 mm) LFSc.ZRC-181, external and internal views of scutum and tergum G Amphibalanus reticulatus (Utinomi, 1967), top view, (BD: 14.99 mm) LFSc.ZRC-158, external and internal views of scutum and tergum H Chelonibia testudinaria (Linnaeus, 1758) on crab Portunus sanguinolentus I Chelonibia testudinaria (Linnaeus, 1758), top view (BD: 5.33 mm) LFSc.ZRC-159, internal view of scutum and tergum J Lepas anatifera Linnaeus, 1758, (CL: 16.39 mm) LFSc.ZRC-162, a. Side view of capitulum K Lepas anserifera Linnaeus, 1758, (CL: 16.28 mm) LFSc.ZRC-183, Side view of capitulum.