INDEX. 



221 



Planorbis, 162 

 Pleurotoma, 161 

 Pleurotomaria, 156 

 Plicatula, 137 

 Polychaeta, 99 

 Polyplacophora, 155 

 Polyzoa, 101 

 Porifera, 26 

 Prearcturus, 194 

 Prestwichia, 206 

 Primitia, 188 

 Productus, 116 

 Prosobranchiata, 155 

 Protaster, 73 

 Protocystites, 94 

 Protospongia, 33 

 Protozoa, 14 

 Pseudocrinites, 93 

 Pseudornelania, 158 

 Pterinea, 138 

 Pteropoda, 163 

 Pterygotus, 210 

 Puluionata, 162 

 Purpura, 160 

 Pygaster, 81 



Radiolaria, 25 

 Rastrites, 46 

 Receptaculites, 33 

 Reniera, 31 

 Retiolites, 48 

 Rhizopoda, 15 

 Rhynchonella, 120 

 Rostellaria, 159 

 Rotalia, 20 

 Rugosa, 56 



Saccamina, 19 

 Scalaria, 157 

 Scaphites, 177 

 Scaphopoda, 168 



Scyphomedusse, 40 

 Sea-cucumbers, 84 

 Sea-lilies, 85 

 Sea-urchins, 73 

 Serpula, 100 

 Sinupalliata, 146 

 Siphonia, 32 

 Siphonida, 142 

 Siphonophora, 40 

 Slimonia, 210 

 Solarium, 157 

 Solen, 147 

 Sphaerospongia, 33 

 Spirifer, 118 

 Spirorbis, 100 

 Sponges, 26 

 Spongilla, 31 

 Starfishes, 65 

 Stringocephalus, 122 

 Stromatopora, 50 

 Stromatoporoidea, 49 

 Strombus, 159 

 Strophomena, 117 

 Syringopora, 59 



Tellina, 146 

 Tentaculites, 163 

 Terebratula, 121 

 Teredo, 148 

 Tetrabranchiata, 171 

 Tetractinellid, 31 

 Tetragraptus, 47 

 Textularia, 19 

 Thamnastrsea, 58 

 Theca, 163 

 Thecosmilia, 56 

 Tholiasterella, 34 

 Thoracostraca, 191 

 Thracia, 148 

 Trigonia, 141 

 Trilobita, 195 



