Pituophis, ii. [375]
Pit-vipers, ii. [384]
Pitylus, ii. [99]
Pityriasis, ii. [273]
Plagiodontia, ii. [238]
Plagiolophus, European Eocene, i. 126
Plagiotelium, ii. [492]
PLAGIOSTOMATA, ii. [460]
Planetes, ii. [490]
Planorbis, European Secondary, i. 169