INDEX 



413 



Sepia, 187 

 Septa, 5, 124, 299 

 Septal Necks, 125 

 Septal Plates, 34 

 Septicarina, 175 

 Septicostae, etc., 147 . 

 Serpenticone, 143 

 Shell-growth, 192 

 Shumaraia, 209 

 Sicula, 282 

 Side-plates, 260 

 SigiUaria, 338, 342, 343 

 Siftllanostrobus, 338 

 Silicification, 346 

 Silicispongias, 318 

 Smupalliate, 64 

 Sinus, 33, 38 

 Siphonia, 318 

 Siphonostome, 102, 113 

 Sifihonotreta, 25 

 Siphuncle, 126 

 Skin-teeth, 221, 222 

 Slit, Marginal, 96 

 Smilotrochus, 311 

 Smith, William, 17 

 Solarium, 112 

 Solenocheilus, 150 

 Solenopora., 334 

 Solnhofen Stone, 255, 297 

 Somites, 191 

 Sonnininae, 175 

 Sowerby, J., and J. de C., 



374 



Spatangoidea, 277 

 Species, 5, 22, 355 

 Spermaphyta, 532, 340 

 Sphaerexochus, 211 

 Sphaerocone, 140, 150, 174 

 Sphieronites, 259 

 S/ihenodiscus, 179 

 Sphenophyllales, 335, 337 

 Sphenopteris, 340 

 Spicules, 316 

 Spiracle, 260 

 Spire, 08 



Spirifer,T,\, 41, 42 

 Spiri/erina, 42, 43 

 Spiroceras, 142 

 Spiroloculina, 325 

 Spirula, 124, 188 

 Spirulirostra, 188 

 Spondylium, 34 

 Spondylus, 89 

 Sporadic, 181 

 Sporangia, 332 

 Spores, 332, 

 Sporophylh, 332 

 Sporophyte, 332 

 Spumellaria, 320 

 Squamata, 237 

 Static Characters, 205 

 Stauroctphalus, 211 

 Stegocephalia, 230, 237 

 Stelleroidea, 243, 278 

 Stephanophyllia, 313 



