Plimmer and Rose Bradford, on Trypanosoma, [121]

Pliobothrus, [284], [286]

Plocamia, [223]

Plumohalichondria, [225]

Plumularia, [279];

P. echinulata, [276];

P. halecioides, [276];

P. profunda, [275];

P. setacea, [276]

Pluteus, [607]