266 



INDEX TO GENERA. 



Nettion 217 



Nucleorinus 84 



Nyctea 182, 184 



Njroca 217 



Oceanites 203, 206, 212 



Oceanodroma 212 



(Edipus 95, 102 



Oidemia 217 



Olor 216 



Omomys 63 



Ouychaster 82 



Opheobatrachus 94, 95, 101 



Orca 22, 55 



Ornitboryocbus 203 



Ornitbotarsus 123 



Ossifraga 206 



Palsecbinus 81 



Pagodroma 213 



Pagopbila 184, 213, 214 



Pelagodroma 203, 212 



Pelecanoides 213, 215 



Pelicanus 206, 215 



Pelionetta 217 



Pentremites 83 



Periscbodomus 77 



Pba?betria 212 



Pbsetbon 206, 213, 216 



Pbalacrocorax 215 



Pbilocrinus 70 



Pboca?na 23, 53 



Pboenicopterus 204 



Pboetusa 214 



Pbolidocidaris 78 



Pbragmicoma 225 



Pbysa 125 



Pbyseter 32, 59 



Pbysetocrinus 158 



Pbysiotium 224 



Picus 126 



Pinicola 182 



Pinus 122 



Pipilo 126, 188 



Plagiocbasma 229 



Plagiocbila 223 



Platyceras 88 



Platycrinites 168 



Plectrophanes 182 



Plectropterus 206, 217 



Pletbodon 93, 99 



Plotus 200, 215 



Podiceps 205, 212 



Podilymbus 206, 208, 211 



Polydectes 192 



Polyotus 224 



Polysticta 217 



Pontogeneus 6 



Pontoporia 6 



Poatomogale 64 



Poteriocrinites 137 



Preissia 229 



Priofinus 212 



Prion 202, 213 



Priscodelpbinus 6, 10 



Protaster 83, 169 



Protbyris 172 



Ptycliorbampus 211 



Puffinus 2C0, 212 



Pygopodes 213 



Pyranga 129 



Querquedula 217 



Quiscalus 133 



Rana 94 



Rhabdosteus 6 



Rbacbianectes 14, 40 



Rbodostetbia 214, 206 



Rbyiicbops 214 



Riccia 231 



Rissa 207, 214 



Saccocrinus 163 



Saccogynia 223 



Sagmatorrbina 211 



Salamandra 93 



Sarkidiornis 217 



Sauteria 229 



Hendtnera 224 



Scapania , 218 



Scapbiocrinus 137 



Scbiza^a 13 



Scliizodus 172 



Scbizostoma 125 



Sciurus 3 



Sibbaldius 15, 20, 51 



Simorbyncbus 211 



Sip b on orb is 204 



Somateria 217 



Sorex 64 



Spatula 217 



Spelerpes 93, 95, 104 



Spbeuiscus 198 



Spbyrapicus 126 



Spiriferina 172 



Steganocrinus 154 



Steganopodes 206, 213 



Stercorarius 213 



Stereocbila 93, 94 



Stereocbilus 190 



Stereodectes 3 



Sterna 214 



Strotocriuus 158 



Strutbio 198 



Sturnella 126 



Snla 215 



Suruia 182 



