INDEX TO GENERA. 



3G9 



Podiceps 47 



Podilymbus 47 



Podocncmis 232 



Poeciliclithys 259 



Polyccra 140 



Porthidium 206, 207 



Porzaiia 35 



Poterocrinites 310 



Procyon 12 



Pbylodactylus 205 



Physopyxis 112, 273, 291 



Prochilodus 258 



Productus 74 



Proetus 89 



Progne 21 



Protoliippus 50 



Pseudorhamdia 2G9 



Pseudotremia 297 



Pterinca 162 



Pterophyllum 250, 291 



Ptilodictya 63, 160, 317 



Puffinus 38 



Purpura 143 



Putorius 12 



Pyranga 21 



Pyrula 145 



Quercus 155 



Querquedula 36 



Quiscalus 25 



Rfeta 137 



Rallus 34 



Pana 49 



Ranclla 147 



Ranula 222 



Rapana 144 



Raphidophora 297 



Reduvius 51 



Recurvirostra 33 



Renilla . . .' 129 



Retzia 318 



Rhadina^a 204, 212 



Rliyacopliilus 32 



Rhinoceros 10, 248 



Rliinodoras 292 



Rliyncliops 46 



Roeboides 55, 265, 292 



Rubus 296 



Salix 109 



Salmo 305 



Sanguinolites 68 



Sauropleura 53 



Scalaria 141 



Scalops 14 



Sceloporus 205, 216 



Schizodus 72, 165 



Sciuravus 230 



1872.] 



Sciurus 14 



Scytopis 223 



Sedgwickia 71, 323 



Scmele 138 



Semicassis '. 143 



Serrasalmo 268, 293 



Sesaima 121 



Sigaretus 142 



Siliquaria 138 



Sinopa 116 



Smilisca 205 



Solarium 141 



Solemya 139 



Soleu 138 



Soleniscus 329 



Soleuomya 66 



Spbaerodactylus 216, 218 



Spilotes 204 



Spirifer 179 



Squatarola 29 



Stegophilus 55, 290 



Stenorhina 205 



Sterna 43 



Sternopygus 257 



Stetbapriou 261, 291 



Stictopora 63 



Strepsilas 39 



Streptacis 173 



Strigilla 138 



Strix 27 



Strombus 147 



Sturnella 25 



Stylcmys 248 



Sula 38 



Symbranchus 290 



Synipbemia 32 



Symphj'sodon 291 



Systoma 216 



Tantilla 204 



Tienia 53 



Teleuraspis 206 



Tellina 138 



Telmatodytes 19 



Testudo 154 



Tetragonopterus 217, 260, 291 



Titanotherium 114 



Thalasseus 42 



Tbrasops 200, 304, 318 



Thryothorus 19 



Torenia 118, 157 



Trachycepbalus 219 



Trichomycterus 289 



Triforis 143 



Trigonocephalus 203 



Tringoides 33 



Triouyx 154,338 



Tripoi-theus 263, 291 



Trochita 83 



