Stelechotokea, [347]

Stelletta, [213], [214], [222]

Stem—see Stalk

Stem-ossicles, of Pentacrinidae, [588], [591];

of Hyocrinus, [588], [590];

of Rhizocrinidae, [588], [590];

of larva of Antedon rosacea, [619]

Stenoscyphidae, [321]

Stenoscyphus inabai, [321]

Stentor, [137], [154];