Petro"mzon, suctorial apparatus, [287], [304]
Petro"mzon, transformation, v. Transformation of the Lamprey
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]