Pericrocotus, ii. [268]
Peridexia, ii. [487]
Perim Island, extinct mammalia of, i. 122
probable southern limit of old Palæarctic land, i. 362
character of fossils of, ii. [157]
Periopthalmus, ii. [430]
Perisoreus, ii. [273]
Perissodactyla, N. American Tertiary, i. 135
Perissoglossa, ii. [279]
Peristera, ii. [333]