INDEX. 



1075 



Potomac group, 816 

 Potosi, 26 



Potsdam period, Potsdam Sand- 

 stone, 463, 464 

 Potter's clay, 81§ 

 Pottsvffle coal-beds, 650, 656 



— conglomerate, 647 

 Powder River, 266 

 Pozzuolana, 80§ 

 Prsr'arcturus, 623, 624 

 Prasopora lycoperdon, 505*, 514 

 Prawn, 438 



Precession of the equinoxes, 253 

 Prehnite, 68 

 Preston beds, 817, 836 

 Prest«icliia, 701, 720 ; anthrax, 703 ; 



Dana;, 977*, 691 ; longlspina, 691 ; 



rotundata, 701*, 703 

 Priacodon ferox, 767* 

 Priconodon crassus, 886* 

 Primal of Rogers, 490, 728 



— Sandstone, 463 

 Primary, 40S§, 880 

 Primates. See Quadrumana 

 Primitia, 481, 516 

 Primitive system, 408§ 

 Primitivgebirge, 440 

 Primordial, 462, 464, 482 



Prince Edward Island, 357, 741 ; 

 Permian in, 660 ; Triasslc, 753, 

 755 



Prince Patrick Island, 749, 760, 

 792 



Prince William Sound, 240 



Prioniodus acicularis, 621 ; angula- 

 tus, 621 ; armatus, 621 ; erraticus, 

 621 ; spicatus, 621 



Prionocyclus, 855 ; Woolgari, 855 



Prionotropis, 855 



Pristis bisulcatus, 925 



Proboscideans, 919 



Procamelus, 911, 919 



Prodryas Persephone, 900* 



Productella, 611, 612 ; hirsuta, 621; 

 lacrymosa, 613*, 621 ; navicella, 

 590 ; pyxidata, 602 ; speciosa, 

 620 ; subaculeata, 585* ; subulata, 

 598*, 601, 602 ; truncata, 602 



Productus, 309, 427*, 591, 592, 642, 

 674, 700, 705, 707 ; aculeatus, 427* ; 

 Cancrini, 704 ; cora, 690 ; costatus, 

 606, 704; dissimilis, 602; Fle- 

 mingi, 646 ; horridus, 704, 707 ; 

 lacrymosus, 592 ; latissimus, 704 ; 

 Leplayi, 704; longispinus, 700*, 

 704, 711 ; mesolobus, 606 ; muri- 

 catus, 690 ; Nebrascensis, 675*, 

 690 ; Norwoodi, 685 ; parvus, 647 ; 

 praelongus, 626 ; punctatus, 642*, 

 690, 704; Rogersi, 685; scabri- 

 culus, 703, 704; scitulus, 646; 

 semiretlculatus, 427*, 685, 690, 

 711 ; Shumardianus, 602 ; spe- 

 ciosus, 592 ; subaculeatus, 626, 

 627, 628 



Proetus, 513, 515, 521, 652, 562, 568, 

 579, 586, 591, 648, 720 ; auriculatus, 

 614 ; crassimarginatus, 587*, 591, 

 599 ; doris, 614 ; Girvanensis, 520 ; 

 latifrons, 565*, 567 ; mlnutus, 614 ; 

 parviusculus, 516 ; pra^cursor, 

 614 ; Stokesi, 551, 567, 569 



Proganochelys Quenstedtii, 773 



Progonoblattina, 691 



Progress in earth's development, 



397 

 Proicene, 880§ 

 Prolecanites Lyoni, 643* 

 Promontory Range, 365 

 Promylacris, 691 

 Propylyte, 87§, 304 

 Prorhynchus, 621 ; nasutum, 621 

 Proscorpius Osborni, 557* 

 Prosoponiscus problematicus, 707 

 Prospect Ridges, 495, 733 

 Prosqualodon, 927 

 Prosthenic, 717§, 796, 870 

 ProtaBiphyllum, 831 

 Protannularia Harknessi, 519* 

 Protapirus, 910, 918 

 Protaster, 516, 562 ; Forbesii, 562 ; 



hirudo, 567 ; Sedg-wickii, 567 

 Protaxis, 24§. See also Acadian 



protaxis ; Appalachian ; Archaean ; 



Rocky Mountain ; also Gold 



Range 

 Proteaceae, 921, 922 

 Protean group, 542, 638 

 Proterosaurus Speneri, 706* 

 Protichnites septemnotatus, 478* 

 Protoadapis, 925 



Protobalanus Hamiltonensis, 600* 

 Protocardium Hillannm, 836 

 Protocarids, 486 

 Protocaris, 720 ; Marshi, 474* 

 Protoceras, 911, 918 

 Protoceras beds, 886, 894, 911, 918 

 Protocimex Siluricus, 520 

 Protococcus, 285, 486 ; nivalis, 241, 



4;36§ 

 Protogine, 83§ 

 Protogonia, 917 

 Protogonodon, 917 

 Protohippus, 911, 912, 918*, 919 

 Protolabis, 911, 919 

 Protolimulus Eriensis, 615*, 617 

 Protolycosa anthracophila, 703 

 Protophasmids, 677, 679, 691, 701 

 Protophytes, 407 ; Corniferous, 



583* ; Cretaceous, 859 ; Tertiary, 



895 

 Protopterus, 60 

 Protoreodon, 907, 918 

 Protorthis Billingsi, 475* 

 ProtosaMnia, 718 ; Huronensis, 584 

 Protospongia, 482, 497 ; coronata, 



498*; c}-athiforrais, 498*; fene- 



strata, 474*, 481 ; mononema, 



498*, 500; Quebecensis, 498*; 



tetranema, 498* 

 Protostega gigas, 849 

 Prototarltes Logani, 591 

 Prototherium, 795, 927 

 Prototype characters, 928 

 Protozoans, 140, 141, 407. 409*, 418. 



419, 431, 432*; Archaean, 455; 



Lower Cambi'ian, 470 

 Protozoic, 407§ 

 Provence, Cretaceous in, 866 

 Proviverra, 918, 925 

 Provo, 360*, 361 

 Psammodonts, 643§, 647 

 Psammodus, 589, 648 

 Psaronius, 704 ; Erianus, 595 



Pseudselurus, 919 



Pseudodiadema, 779, 884; diatre- 



tum, 8.54 ; hemisphsericum, 790 ; 



Moorei, 790; seriale, 778* 779; 



Texanum, 836 

 Pseudoliva, 916; scalina, 915; tu- 



berculifera, 915 ; unicarinata, 915 

 Pseudomonotis, 690 ; Hawni, 68.5* ; 



Ochotlca, 758 ; speluncaria, 707 

 Pseudopecopteris, 699 ; anceps, 645, 



689 ; decipiens, 689 ; irregularis, 



689 ; latifolia, 689 ; muricata, 689 ; 



nervosa, 689 ; nummularia, 689 

 Psilomelane, 71§ 

 Psilophyton, 583, .590 ; cornutum, 



560 ; princeps. 588*, 622 

 Psittacotherium, 904, 917 

 Pteranodon, 863 ; ingens, 852 ; lon- 



giceps, 849*, 852 

 Pteranodonts, 851 

 Pteraspids, 417, 557, 725 

 Pteraspis, 564, 625; Banksii, 566*, 



567 ; Ludensis, 567 ; truncata, 567 

 Pterichthys, 566, 617, 625, 627; 



Canadensis, 611 ; cornutus, 624* ; 



major, 627 ; Milleri, 624* 

 Pterinea, 621, 877 (end) ; Chemun- 



gensis, 613*, 621 ; flabella, 598*, 



602 ; hians, 567 ; retroflexa, 567, 



568 ; Sowerbyi, 567 ; sublaevis, 



567; Trentonensis, 507* 

 Pteris aqullina, 74 ; erosa, 889 

 Pterocera bicarinata, 865 ; oceani, 



791 ; ponti, 791 

 Pterocerian beds, 791 

 Pterodactyls, 796 ; Jurassic, 776 

 Pterodactylus, 788, 790 ; crassiros- 



tris, 786*, 788 ; montanus, 767 

 Pterodon, 918 

 Pterophyllum, 698; Jaegeri, 770*, 



774 ; Riegeri, 749* 

 Pteropods, 59, 72, 141, 144, 423§, 



424§, 425* ; Cambrian, 469, 472*, 



475*, 478*, 480, 483 

 Pteropsis Conradi, 897* ; lapidosa, 



916 

 Pteropus, 53 

 Pterosaurs, 796, 877 ; Jurassic, 



760, 767, 787*, 788 ; Cretaceous, 



844, 851, 852, 863, 870, 871, 876 



(end of tribe) 

 Pterotheca, 503, 506 ; attenuata, 514 

 Pterygotus, 557, 565, 722, 724; 



acuticaiidatus, 557 ; AngUcus, 



623* ; bilobus, 564*, 567 

 Ptilodictya, 514, 521, 550 ; scalpel- 



lum, 567' 

 Ptilodus, 917 

 Ptilophyton plumula, 645 (last of 



the genus) 

 Ptyehaspis speciosa, 501 

 Ptychites, 686 ; gibbosus, 774 

 Ptychoceras, 855 ; Texanum, 855 

 Ptyehodus mammiUaris, 855 ; JJor- 



toni, 84;3* 

 Ptychoparia, 500, 516 ; Adamsi, 



473* ; C.alcifera, 501 ; formosa, 



476* ; Hartti, 501 ; Kingi, 476* ; 



Matthe\Ti, 476* ; minuta, 479* 

 Ptychopteria, 621, 638 ; falcata, 621 ; 



Sao, 621 

 Ptyonius serrula, 682, 683* 



