Tongue-bars, [12], [12], [13], [120], [135]

Tope, [449]

Tornaria, [18], [18] f., [28], [31];

T. agassizii, [21];

T. grenacheri, [19];

T. krohni, [19]

Torpedinidae, [462]

Torpedo, [463];

electric organs, [365], [366];

T. hebetans, [463];