Figures 26–31. Figs 26-28 in Sanitation with sponge and plunger: western Atlantic slit-wormsnails (Mollusca: Caenogastropoda: Siliquariidae)

Figures 26–31. Figs 26-28, Tenagodus modestus, operculum (Florida Keys, FMNH 296716). 26: outside (heads-on) aspect, diameter = 2.5 mm. 27: razorblade section of whole mount attached to foot, showing internal compartments; diameter = 2.5 mm. 28: detail of Fig. 26, spines on lamellar margin. Figs 29, 30, Tenagodus squamatus, operculum (Bahamas, FMNH 296703). 29: razorblade section of whole mount attached to foot, showing internal compartments; diameter = 5.6 mm. 30: details of Fig. 29, spines on lamellar margin (note attached sponge spicules). Fig. 31, Tenagodus modestus, highly flexible ctenidial filaments (FMNH 296716). All SEM, critical-point dried. Scale bars = 100 Mm.