Pelopaeus spinolae foot, [105], [106]

Perez on Termes, [366], [382]

Perga lewisii, [517]

Periblast, [149]

Pericardial septum, [134];

sinus, [134];

tissue, [135]

Peringueyella jocosa, [325]

Peripatus, [1], [6], [23], [77], [79];

tracheae, [3], [14], [15];