INDEX TO THE GENERA. 
Pterinea, 24, 77 
Pteronites, 77 
Ptilodictya, 18 
Ptychophyllum, 13 
Pullastra, 78 
Pulvinulina, 130 
Purisiphonia, 104, 200 
Pustulipora, 149 
Pygorhynchus, 142 
Pyramia, 72, 78 
Pyramidella, 166 
Pyramidellus, 166 
Pyramus, 72, 78 
Pyrula, 167 
Quinqueloculina, 130 
Radula, 109 
Raphistoma, 25 
Receptaculites, 3 
Retepora, 46, 150 
Retihornera, 43 
Retiolites, 9 
Retzia, 21 
Rhizophyllum, 14 
Rhombopora, 18, 46 
Rhynchonella, 21, 54, 106, 151, 202 
Rhynchopygus, 142 
Rhytidocaryon, 124 
Rhytidotheca, 124 
Rissoa, 167 
Rissoina, 114, 167, 204 
Robulina, 102 
Rosalina, 131 
Rotalia, 131 
Sagenaria, 32 
Salenia, 143 
Salenocidaris, 143 
Salicornaria, 150 
Sanguinolites, 78 
Sarcophilus, 173, 192 
Scaldia, 78 
Scalites, 25 
Schizaster, 143 
Schizaster, 142 
Schizodon, 194 
Scutella, 143 
Scutularia, 151 
Selbia, 144 
Serpula, 105 
Sigillaria, 32 
Siphodictyum, 147 
Siphonotreta, 21, 54 
Solecurtus, 79, 157 
Solen, 79 
Sparsispongia, 3 
Spatangus, 143 
Sphenotrochus, 137 
Spherexochus, 18 
_Sphenopteris, 32, 99 
Spirifera, 22, 54, 202 
Spiriferina, 60 
Spirigera, 21 
Spirigerina, 18 
Spiroloculina, 132 
Spirophyton, 3 
Spondylostrobus, 124 
Spondylus, 157 
Sporangites, 199 
Squalodon, 173 
Staurocephalus, 18 
Stenaster, 15 
Stenopora, 37 
Stigmaria, 32 
Sthenurus, 193 
Straparollus, 24 
Streptorhynchus, 50, 60 
Striatopora, 14 
Stromatopora, 3, 33 
Strombodes, 14, 39 
Strombodes, 37 
Strophalosia, 60 
Strophomena, 22, 60, 202 
Synbathocrinus, 41 
Syringodendron, 32 
Syringopora, 14, 39 
Syrnola, 167 
“‘Teeniaster, 14 
Teniopteris, 100 
Tancredia, 112 
Tapes, 78 
Tasmanites, 199 
Tellimya, 24 
Tellina, 112, 157 
Tellinomya, 24, 79 
Temnechinus, 143 
Tenagodus, 167 
Tentaculites, 26 
Terebra, 167 
Terebratella, 106, 151, 177 
Terebratula, 61, 152 
Terebratulina, 152 
Teredo, 112 
Tethea, 133 
Tethia, 133 
Tetragraptus, 9 
Teuthis, 117 
Textularia, 132 
Thala, 167 
Thalassina, 197 » 
Thalotia, 168 ~ 
Thamnastrea, 137 
Theca, 89 
Thracia, 113 
Thylacinus, 194, 204 
Thylacoleo, 194 
Tomodus, 91 
Torinia, 168 
Tornatella, 113 
Trachydosaurus, 178 
Trachyglossus, 181 
Trematocaryon, 125 
Trematospira, 23, 202 
Tribrachyocrinus, 41 
Trigonia, 113, 157 
Trigonocelia, 155 
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