FIGURE 1. A in Pyrgopsella (Cirripedia: Balanomorpha: Pyrgomatidae) is not a sponge­inhabiting barnacle

FIGURE 1. A. Symphyllia radians, the host coral of Pyrgopsella youngi; ~15 barnacles were removed from this colony; note the absence of pits, owing to the barnacle's near absence of a calcified basis. B. Pyrgopsella youngi, paratype RMNH C 2604 from Symphyllia radians. C. Pyrgospongia stellula, shell of paratype USNM 141633, Bauang Dakula Reef, Tawitawi, Sulu Archipelago, Philippines, collected and identified by N. C. Rosell. D. Pyrgospongia stellula, Tanabe Bay, Japan, coll. T. Itô, det. M. J. Grygier, arrow indicates basi­occuldent angle of scutum. Scale bars: A = 5 cm; B = 2 mm; C = 1 mm; D = 1 mm.