178 



INDEX TO GENERA. 



Pandion 143 



Farad oxides 62 



Patriofelis 11 



Pectinatella 90 



Pedioellina 101 



Pentreuiites 31 



Petunia 90 



Pezotettix 78 



Pheroneuia 127 



Philacte 131 



Phillipsia 52 



Phytolacca 102 



Pinus 72 



Platecarpus 132 



Platygonu3 13 



Plesiosaurus 9, 19 



Pleurophorus 18 



Plumatella 100 



Poicilopleuron 3 



Poly bonis 145 



Polycotylus 132 



Polypora 16 



Poteriocrinites 26 



Priacanthus 119, 121 



Priotelus 88 



Procellaria 85 



Procyon 13 



Prornicropterus 119 



Protohippus 67, 127 



Psilopogon 88 



Pterocles 86 



Ptychodus 12 



Puffiuus 6 



Pygocentrus 93 



Rzeboides 92 



Receptaculites 22 



Reduvius 110 



Rhamdia 94 



Rhamphastos 88 



Rhinoceros 2, 65 



Rostrhamus 144 



Rubus 128 



Rumex 71 



Saccosoma 25 



Sactosomopsis 25 



Sagittaria 89 



Salix 128 



Salvia 90 



Saniwa 124 



Sarothrodus 119 



Scaphiocrinus 27 



Schizodus 18, 41 



Sciades 95 



Scirpus 89 



Selene 119 



Septopora 15 



Silpliium 117 



Sivatherium 1 



Solanum 102 



Solenochilus 47 



Sorubimichthys 94 



Spargauiuni 89 



Sph;c riura 56 



Spirifer 36, 60 



Spongilla 100 



Staphylea 115 



Stauronotus 82 



Staurotypus 4 



Stentflr". 90 



Straparollus 45 



Stricklandinia 37 



Stylemys 67 



Subulites 47 



Syncladia 15 



Tienidiestes 132 



Telmatornis 5 



Temnochilus 49 



Tetragonopterinse 92 



Tetraodon 120 



Thalassidroma. 85 



Thamnotrizon 76 



Thespesius 67 



Tinnunculus 148 



Titanotherium 2, 113 



Tonionotus 82 



Trionyx 5 



Trogon., 88 



Triticum 125 



Tracbodon 67 



Traxinus 115 



Trigonocephaly 90 



Turacus 88 



Udeopsylla 77 



Urnatella 100 



Vitis 136 



Volvox 90 



Vomer 119 



Wolffia 90 



Xiphactinus..., 12 



Yucca 14 



Zanthoxylum 136 



Zeacrinus 18, 27 



Zizauia 89 



