406 



INDEX. 



Screw-pines, 230. 



Scutella, 311; nubratuada, 312. 



Sea-cows (see Sirenia). 



Sea-lilies (see Crinoidea). 



Sea-lizards (see Enaliosaurians). 



Seals, 322. 



Sea-mats and Sea-mosses (xee Polyzoa). 



Sea-shrubs (see Gorgonidtt). 



Sea-urchins (see Echir.oidea). 



Sea-weeds, 80, 81, S3, 97, 136, 164, 261. 



Secondary period. 44 



Sedimentary rocks, 15. 



Semnopithecus, 322, 331. 



Septaria, 31. 



Sequoia, 306, 309, 310; Couttxice, 309; 

 gigantea, 309 ; Langador/u, 309. 



Serolis, 84. 



Serpents (see Ophidia). 



Serpulites, 123. 



Sewalik Hills (see Siwalik Hills). 



Sheep, 355. 



Shell-sands, 19. 



Sigillaria, 168, 169 ; Grceseri, 168. 



Sigillarioids, 136, 168, 170, 196. 



S'licates, infiltration of the shells of For- 

 aminifera by, 34, 74. 



Siliceous rocks, 20, 32. 



Siliceous Sponges, 265. 



Silicification, 13, 14. 



Silurian period (see Lower Silurian and 

 Upper Silurian), 90-114 115-132. 



Simomurus, 219; Gaillardoti, 219. 



Siphonia, 264 ; ficus, 265. 



Siphonostomatous Univalves, 237, 271, '293. 



Siphnnotreta, 110. 



Sirenia, 299, 320 ; of the Eocene, 299 ; of 

 the Miocene, 315. 



Siren lacertina, 200. 



Sivatherium, 318; giganteum, 319. 



Siwalik Hills, Miocene strata of, 3u7. 



Skiddaw Slates, 101. 



Sloths, 315, 349-351. 



Swilax, 308. 



Smithia, 173. 



Snakes (see Ophidia). 



Soft Tortoises, 296. 



Solarium, 271. 



Solenhofen Slates, 228. 



Solitaire, 346, 348. 



Spalacothertum, 254. 



Spatangus, 311. 



Sphierospongia, 139. 



Sphagodus, 130. 



Sphenodon, 218. 



Sphenoptens, 136, 165, 196. 



Spiders of the Coal-measures, 181. 



Spider-shells, 237. 



Spindle-shells, 237. 



Spiri/era, 125, 147, 184, 19S, 2?4 ; crispa, 

 127; disjuncta, 147; hysteriea, 12<j; 

 mucronata, 147; Niagarensis, 127; ros- 

 trata,235; sculptilis,\^i ; trigonalis,\85. 



Spiriferidce, 147. 



Spirophyton cauda-Galli, 135, 164. 



Spirorbis, 123, 143, 178 ; A rkonensis, 144 ; 

 Carbonanus, 178; laxus, 144; Lewtsii, 

 123 ; omphalodes, 144 ; spinultfera, 144. 



Spiruhrostra, 312. 



Spondylus, 269 : spinosus, 270. 



Sponges, of the Cambrian, 81 ; of the 

 Lower Silurian, 98 ; of the Upper Silu- 

 rian, 119 ; of the Devonian, 139 ; of the 



Carboniferous, 171 ; of the Permian, 

 197 ; of the Trias, 2 .9 ; of the Jurassic, 

 230 ; of the Cretaceous, 264, 265. 



Sponydla, 197. 



SponyUlopnis, 197. 



Sponyophylluin, 173. 



Spore-cases, of Cryptogams in the Ludlow 

 rocks, 118 , in the Coal, 163. 



Squirrels, 322. 



Stagonolepis, 218. 



Staircase-shells, 271. 



Stalactite, 21. 



Stalagmite, 21. 



Star- corals, 231. 



Star-fishes, H-5, 120, 210. 



St Cassian Beds, 205, 206. 



Stephanophi/llia, 266. 



Stersognatkus, 253, 254. 



Stigmaria, 169; ficoides, Ifi9. 



Stouesfield Slate,' 227 ; Mammals of, 253. 



Strata, contemporaneity of, 44. 



Stratified rocks, 15-18. 



Streptelasma, 105. 



Streptorhynchus, 198. 



Stromatopora, 98, 99, 118, 139 ; ntgosa, 99 ; 

 tuberculata, 140. 



Strombodes, 119; pentagomus, 104. 



Strombus, 271. 



Strophalosia, 198. 



Strophodux, 255. 



Strophomena, 109, 110, 125, 147, 181 ; 

 altcmata, 110 ; deltoidea, 109 ; filitexta, 

 110; rhomboidalis, 147, 148; subplana, 

 127. 



Sul> Apennine Beds, 325. 



Sub-Carboniferous rocks, 158, 161. 



Succession of life upon the globe, 367-374. 



Suida, 302, 317, 329. 



Sulphate of lime, 22. 



Sus Erymanthius, 317 ; scrofa, 354. 



Synastrcva. 209. 



Syiihelia Sharpeana, 266. 



Symcladia, 198 ; virgulacea, 19S. 



Syringopora, 11, 173 ; raimilosa, 174. 



Tabulate Corals, 104; of the Lower Silu- 

 rian, 105 ; of the Upper Silurian, 119; 

 of the Devonian, 142; of the Carbon- 

 iferous, 172; of the Permian, 197. 



Talpa Europcea, 336. 



Taplridce, 300. 



Tapirs, 300. 



Tapirus Aroernensis, 327. 



Taxocrinus tubercuiatus, 122. 



Taxodium, 262, 3u8, 310. 



Teleosaurus, 251. 



Teleostean Fishes, 150; of the Cretaceous, 

 276. 



Telerpeton Elginense, 218. 



Tellina proximo,, 338 



Tent.aculites. 129, 148 ; ornatus, 129. 



Terebra, 293^ 



Terebratella, 268 ; Astieriana, 268. 



Terebratula, 184, 234; digona, 235; e.lon- 

 gata, 168; hastata, 185; quadrifida, 

 235 ; sphcKroidalis, 235. 



Terebratulina, 268 ; caput-serpentis, 268 ; 

 striata, 268. 



Termites, 311. 



Terrapins, 280, 296. 



Tertiary period, 44, 2S4-2S7. 



Tertiary rocks, classification of, 284 287. 



