Proteus, [87].

Protomyxa aurantiaca, [149].

Protozoa, development amongst, [150];

conjugation of, [287].

Psorosperms, [150].

Psychidae, length of life of, [16], [44], [45], [157];

deposition of eggs of, [18];

death of female, [63], [132];

parthenogenesis of, [293].

Pulex irritans, length of life of, [42].