FIG. 4 in Bertorsonidra n. gen. (Bryozoa, Cheilostomata) for Tremopora prenanti Gautier, 1955, a rare species from the Mediterranean

FIG. 4. — Attaching structures: A, broken colony of Bertorsonidra prenanti (Gautier, 1955) n. comb. showing pillar-like structures emanating from the zooid basal walls;B, margin of a Mollia patellaria (Moll, 1803) colony adhering to the surface of a corallinacean alga through long pillar-like structures. Scale bars: 500 μm.