Key to species of Radicipes Stearns, 1883

1. Sclerites virtually absent or rare in polyp body wall.................................................... R. spiralis

1a. Sclerites always present in polyp body wall................................................................. 2

2. Body wall sclerites predominantly long scales with irregular margins........................... R. aureus (Fig. 14 A,B)

2a. Body wall sclerites predominantly rods, flattened rods or scale-like rods with regular margins......................... 3

3. Body wall sclerites predominantly flattened to slightly rounded rods............................................. 4 3a. Body wall sclerites predominantly rounded rods, sometimes with one flattened tip.................................. 5 4. Fully developed polyps with body wall filled by sclerites longitudinally arranged in eight regular rows (adaxials less devel-