Tertiary, Polyzoa, [521]
Tessin, on Rotifers, [198], [218]
Testes, of Leptoplana, [14], [15];
of Planaria lactea, [38], [39];
of Acoela and Alloeocoela, [47];
of Temnocephala, [54];
of Polystomum, [57];
of Cestodes, [75], [76], [86]—see also Reproductive organs
Tetragonurus, [389]