INDEX. 



329; 



Northamptonshire, fossil mollusca 



of, 257 

 Norwich, corals near, 96 

 Crag, 292 ; fossils of, 292, 



293 ; division of, 293 ; localities 



for fossils in, 294, 295 

 Nummulite limestone, 29 



Old ham ia, 35 



Oniphyma^ 78, 79 



Oolite, Great, sponges in, 19 



fresh-water beds of, 251 ; 



fossils in, 26 1 

 mollusca of, 255 ; localities 



for, 258, 259, 260 



Yorkshire, fossils of, 257 



Oolitic corals, 91 



Crustacea, 206 



echinoderms, 154; localities 



for, 154-6 



encrinites, 117, 128 



 polyzoa, 217 



Old Red Sandstone lakes, the, 240 

 Ossicles of encrinites, 114 

 Orihoceratites^ in Yoredale shales, 



116 

 Ostrea vcsciculai'is, 268, 269, 270 



Pahcechiniis , structure of, 153 



Paloeontographical Society, 324 



Paludina, Wealden, 239 



Paramoiidra, 26 



Peak district, encrinites in, 1 18 



" Pear encrinite," 128 



Pentacrintts, 113, 128 



Pmtamerus Knightiiy 78, 235 



Pentremites, 130, 132 



Perforata, 66 



" Periwinkle Rocks," 38 



Permian mollusca, 251 ; localities 



for, 252 

 Phillipsastraa, 89 

 Phosphorite, 208 

 Phosphate, sponges converted into, 



26 



Pliocene fossils, 278 



Planorbis, Eocene, 240 



Platycriniis, 127 



Pleurograpttis, 48 



Polyzoa, appearance of living, 211 ; 

 their relation to Brachiopoda, 

 214 ; localities for fossil kinds, 

 215-217; in Coralline Crags, 284 



Portland stone sponges, 19 



Poteriocrimis, 122, 127 



Prestwich on the Crags, 285 



Productidce, 232 



Prodiidus gigantcHs, 232 



Llangollieiisisy 232 



Pyritized encrinites, 128 



Purbeck limestone sponges, 16 



R 



Radiata, 104 



Radiolarians, 18, 32 



Ramsey Island, graptoliles in, 48, 53 



Rastritcs, 43, 47 



Reef-building corals, 69 



*' Rose encrinite," 125 



Rhabdophora, 40, 46 



Rhcetic mollusca, 253 ; localities for, 



253, 254 

 RhodocriuHS, 125, 127 

 RhynchoncllidiC, 229 

 Rhynchoiiella socialis, 232 



IVilsoiiii, 232 



Rugosa, 62, 64 



S 



Saccosonia, 129; of Oolite, 112 



Salenia, 152 



Scarborough, corals near, 91 



" Screwstones," 119 



Sea mats, 209; structure of, 210; 



distribution of fossil, 2U 

 Secondary corals, 90 

 ScrptiliVy 170; in Oolite, 172; in 



Chalk, 173 

 Sertularians, modern, structure of, 



Silurian cephalopoda, 308 



