490 



INDEX 



Pedetidae, 372, 373 



Pellegrinia, 372 



Pelobates, 204 ; syriacus, 221 



Pelobatidae, 204, 221 



Pelodytes, 221 



PENHALLOW, Pleistocene flora of 

 Canada, 43, 44 



Pentalagus, 225 



Peratherium, 367 



Perch, absent from western States, 198 



Percidae, 198 



Peripatus, range and origin of, 345 

 347, 362, 432 ; eiseni, 346 ; goudoti, 

 346 ; tholloni, 369 



Permanence of ocean basins theory, 

 214232, 272281, 321333 



Perodipus, 201 



Peromyscus, maniculatus, 27 ; sit- 

 kensis, 92 



Peru, geological history of, 359 ; 

 poverty of freshwater fauna, 405 



PESCHEL, meaning of term "relict 

 lake," 49 



PETERSEN, Polar centre of distribu- 

 tion for butterflies and moths, 22 



Petromys, 372 



Pezzotettix, glacialis, 36; borealis, 36; 

 frigida, 36 



PFEFFER, sub-universal distribution of 

 species, 374, 375 ; distribution of 

 Lepidosirenidae, 378 



Phaeolaema, 350 



Phasmidae, 158 



Philomycus, 412 



Philonthus, 391 



Philoscia, bermudensls, 190 ; couchi, 

 190 



Philyra pisum, 93 



Phlaocyon, 151, 152 



Phoca, 280 



Phragmatobia Juliginosa, 214 



Phrynosoma, 127, 202 



Phyllodactylus tuberculosus, 304 



Pica, rustica, 87 ; nutalli, 88 



PICKARD-CAMBRIDGE, Central Ameri- 

 can spiders, 258 ; spiders of St. 

 Helena, 388, 389 



Pigidium rivulatum, 361 



Pike, as evidence of old land-connec- 

 tion of America with Asia, 83 ; 

 " bony," 89 ; in Mississippi, 163, 164 



PILSBRY, mollusks of Florida, 175, 

 176 ; mollusks of Bermuda, 191 

 193 ; on eastern and western faunal 

 provinces, 198 ; family Helicidae, 

 205, 206, 212 ; on Arionidae, 212, 

 213 ; on Urocoptidae, 267, 268 ; 

 geological history of Antilles, 267 ; 

 on groups of Bulimulus, 270, 307 ; 

 on Pacific continent, 322, 323 ; dis- 

 tribution of Achatinidae, 380 ; mol- 

 lusca of St. Helena, 390 ; Chilo- 

 nopsis, 390 ; convergence among 

 Bulimuli, 410 ; Helicigona and 

 Arianta, 411 



" Pine-barren " flora, 140, 141 



Pinicola, 56 



Pipa americana, 377 



PIRIE, sedimentary rocks in South 

 Orkneys, 433 



Pitymys, range implying great anti- 

 quity, 223, 224 ; incertus, 223 ; 

 quasitor, 224 ; pinetorum, 224 ; 

 nemoralis, 224 



Placostylus, 209, 307 



Plagiodontia, 282, 283 



Plagiola, 254 



Planorbis, nathorsti, 21 ; arcticus, 21 ; 

 noronhensis, 385 



Plants, as tests of climate, 43, 175 ; 

 in Pleistocene beds, 44 ; of Rocky 

 Mountains, 114 ; common to eastern 

 States, Japan and Himalayas, 139 ; 

 affinity in mid-Cretaceous times be- 

 tween Argentina and Dakota, 414 ; 

 common to Eocky Mountains, and 

 southern South America, 415 



Platatherium, 113 



Platygonus, 153 



Plectocyclotus, 268 



Plekocheilus, aurissileni, 269 ; aula- 

 costylus, 269 



Plestiodon, 123 



Plethodon, 412 ; cinereus, 31 



Pleurodonte, 272 



Pliauchenia, 153, 407 



Plover of St. Helena, 387 



Plutonium, 350 



POCOCK, myriopods of Bermuda, 189 ; 

 distribution of scorpions, 382 ; on 

 affinity between western North 

 America and Argentina, 412 



