408 



Index of Genera. 



H 



PAGE 



Hamites 339 



Haplophragomium 223 



Hauericeras 332 



Hemiaster 280 



Heteroceras 339 



Holcodiscus 336 



Holopea 245 



Homalonotus 214 



HyEenasuchus 364 



Hyolithes 247, 387 



Ictidosaurus 151 



Inoceramua 299 



Leda 255 



Leptocoelia 189 



Leptodomus 395 



Lingula 167 



Liopistha 309 



Loxonema •J44 



Lycosuchus 155 



Lystrosaurus 139 



M 



Macrocypris 233 



Margarita 310 



Membranipora 285 



Meretrix 304 



Mesosaurus 379 



Metoptoma 385 



Modiola 294 



Modiomorpha 267, 398 



Mortomiceras 337 



Mytilus 294 



N 



Natica 316 



Nautilus 330, 



Neitheia 298 



Nemodon 289 



Nerita 311 



Neuropteridium 83 



Nilsonia 27 



Nodosauria 225 



NcBggerathiopsis 95 



Nuculana 287, 392 



Nuculites 256, 387 



Nyassa 399 



O 



PAGE 



Onychiopsis 4 



Orbiculoidea 168 



Orthis 175 



Orthoceras 239 



Orthonota 251 



Orthrotetes 170 



Palseoneila 261, 391 



Pardosuchus 367 



Pareiasaurus 123 



Pecten 295 



Pectunculus 291 



Perissoptera 319 



Phacops 203 



Phoenicopsis 67 



Pirifusus 324 



Pleurotomaria 241 



Pleurostomella 224 



Polymorphina 228 



Prsecardium 255 



Proetus 213 



Propappus 351 



Proterosuchus 159 



Protocardia 307 



Pseudodiadema '^76 



Pseudomeliana 312 



Pseudophyllites 334 



Psygmophyllum 92 



Pugnellus 319 



Pulvinulina 230 



Phylloceras 331 



Pyropsis 332 



K 



EensselsBria 177, 401 



Retzia 1S7 



Khinesuchus 373 



Ehyiichonella 175 



Ehynchospira 188, 400 



Rostellites 327 



Rotalia 232 



S 



Sanguinolites 252 



Scala 314 



Scaphiocoelia 403 



Scaphites 343 



Schizoneura 48, 79 



Schlcenbachia 336 



Scylaeosaurus .. 147 



Semifusus 324 



