Pharynx, [4];

of Leptoplana, [8], [9], [12], [14];

of Polyclads, [17], [24];

of Discocelis, [23];

development of, in Polyclads, [29], [30];

of Triclads, [31], [37], [39];

of Temnocephala, [53], [54];

of Polystomatidae, [56];

of Digenea, [62], [64];

of Nereis, [249], [250], [251];