effects on the host, [162]

Parenchyma, in Leptoplana, [11], [12];

of Müller's larva, [29];

in Triclads, [41];

in Acoela, [42];

in Cestodes, [85], [86]

Parovaria, of Phagocata, [38] n.

Parthenogenesis, amongst Rotifers, [200]

Pectinaria, [330];

body, [259];