T. larynx, [263];

T. parasitica, [268]

Tubulariidae, [271]

Tumour, malignant, associated with Leydenia, [91]

Tunicata, [621]

Tuning-fork, [192], [193]

Turbellaria, fresh-water, distribution of, [48];

symbiotic with Zoochlorella, [126]

Turbinaria, [396]

Turbinolia, [399]