Rotifera (L. rota, a wheel; fero, I bear). The name of a class of infusorial animalcules, characterized by the vibratile and apparently rotating ciliary organs upon the heads.
Rhodospermes. The red-coloured sea-weeds.
Serrated (L. serra, a saw). Toothed like a saw.
Sessile. Attached by a base.
Silicious (L. silex, a flint). Flinty.
Setæ. Bristles, or similar parts.
Spicula (L. spiculum, a point or dart). Fine-pointed bodies, like needles.
Tuberculate. Warty, or carved with small rounded knobs.
Testacea (L. testa, a shell). Molluscs with a shelly covering, as the Oyster, Whelk, &c.