Phry"us, evidence of segmentation of carapace, [249], [250], [341]

Phry"us, operculum, [191]

Phry"us, prosomatic appendages, [306]

Phry"us, crossing of dorso-ventral muscles, [271], [277]

Phry"us, stridulating apparatus, [368]

Phyllodoce, [395]

Phyllopoda, [321]

Pigment, in Ammocœtes, in position of atrial cavity, [412]

Pigm"nt, in epithelial lining of central nervous system, [43], [457]

Pigm"nt, in choroid of vertebrate eye, [104], [107]