ii. 236
_Plesiomeryx_, European Eocene, i. 126
_Plesiosorex_, European Miocene, i. 118
_Plestiodon_, ii. 397
_Plethodon_, ii. 413
PLEUROBRANCHIDÆ, ii. 530
_Pleurodeles_, ii. 413
_Pleurodema_, ii. 420
_Pleuronectes_, ii. 441
PLEURONECTIDÆ, ii. 440
_Pleurostrichus_, ii. 392
_Pleurotoma_, ii. 508
_Pleurotomaria_, ii. 539
Pliocene period, Old World, mammalia of, i. 112
Pliocene and Post-Pliocene faunas of Europe, general conclusions from, i. 113 of N. America, i. 132 of S. America, i. 146 of Australia, i. 157
_Pliohippus_, N. American Tertiary, i. 135
_Pliolophus_, European Eocene, i. 126