Petro"mzon, suctorial apparatus, [287], [304]

Petro"mzon, transformation, v. Transformation of the Lamprey

Phagocytes, [420], [471]

Pharynx of Amphioxus, [410]

Phar"nx of Vertebrate, [440]

Phoronis, [439]

Phrynus, brain, [53]

Phry"us, caudal brain, [450]

Phry"us, carapace and carapace removed, [250]

Phry"us, cœcal diverticula, [109]