rate of growth, [370];

T. marginata, [367];

T. perpigniana, [372];

T. polyphemus, [371] f.;

T. sumeirei, [376];

T. vosmaeri, [373], [377]

Tetradactylus, [559];

T. africanus, [559];

T. seps, [559]

Tetrapoda, Credner's name for "four-footed" creatures in opposition to the fishes, which have fins, [4], [11]