Styelopsis, [74];

branchial sac, [74];

S. grossularia, [74], [76]

Stygicola, [713]

Stygogenes, [595]

Stylophorus, [716]

Sucker-Fish (Sucking-Fish), [691], [161]

Sudis, [611];

S. gigas, air-bladder as a respiratory organ, [291]

Sun-Fish, [657] (Lepomis);