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]