'528 



INDEX. 



Shumardia, i. 380. 



Sieboldia, ii. 177. 



Sicjaretus, ii. 15, 17. 



Sigillaria, ii. 4-36, 446, 448, 459, 460. 



Si^Uarioids, ii. 434, 437, 438, 443, 446, 



459. 

 Silicification, i. 5, 141. 

 Silicispongice, i. 140. 

 Siliquaria, ii. 20. 

 Siluridce, ii. 125, 126. 

 Simoceras, ii. 83. 

 Simocyon, ii. 399. 

 Simosaurus, ii. 221. 

 Sinupallialia (Lamellibranchiata), i. 



469. 

 Siphonia, i. 148, 149. 

 Sij>honida (Lamellibranchiata), i. 468, 



492. 

 Siphmiostomata [Gasteropoda.), ii. 5, 7-14. 

 Siphmiotreta,, i. 460. 

 airen, ii. 175. 

 Sirenia, ii. 308. 

 Sirenoidei (Dipnoi), ii. 168. 

 Sivatherium, ii. 36fi, 367. 

 Slimonia, i. 381, 382, 3S3. 

 Sloths, ii. 300, 305. 

 /SOTiZax, ii. 470, 473. 

 Solanocrinus, i. 265, 285. 

 Solarium, ii. 21, 22. 

 Solaster, i. 245, 248, 251, 252. 

 Solecurtus, i. 506. 

 Solemya, i. 499. 

 Solen, i. 506. 

 Solenidce, i. 469, 506. 

 Soleniscus, ii. 16. 

 Solenopisis, i. 506. 

 t-olidungvla, ii. 318, 335. 

 Solipedia, ii. 318, 335. 

 Solitaire, ii. 263, 264. 

 Sorex, ii. 415. 

 Soricidce, ii. 414. 

 Soiverbyia, i. 505. 

 Spalacothentmi, ii. 284, 292, 293. 

 Spatangidai, i. 238, 241. 

 apaiangus, i. 243. 

 Upathobatis, ii. 164. 

 SpaMdaria, ii. 132, 151. 

 Spermophihcs, ii. 411. 9 



Sphcer actinia, i. 156. 

 Sphcerexochus, i. 376, 377. 

 Sphcer ococcites, ii. 443. 

 Sphceronites, i. 293, 297. 

 Spheerosjjongia, i. 128, 2.07, 298, 299. 

 Sphagodxs, ii. 154, 157. 

 Sj)henaidax, i. 145. 

 Sphenodon, ii. 203, 204. 

 SpJienodus, ii. 162. 

 Sphenophyllum, ii. 435, 444. 

 Sphenopteris, ii. 437, 446, 447, 452, 454, 



463, 467. 

 Sphenothcdlus, ii. 441. 

 Sjihenotrochus, i. 187. 

 Spirangium, ii. 462. 

 Spirifera, i. 437, 440, 445. 

 Spiri/eridce, i. 440, 441, 444, 447, 448. 

 Spvnferina, i. 445. 



Spirigera, i. 446, 447. 



Spirdlina, i. 115. 



Spirillinidea, i. 106. 



Spirophyton, ii. 443. 



SpirorUs, i. 310, 311, 313, 314. 



Spirula, ii. 55, 88. 



Spirvlidce, ii. 58, 91. 



Spirulirostra, ii. 90, 91. 



Sporvdylidoi, i. 475. 



Spondylus, i. 475. 



Spongida, characters of, i. 132 ; distri- 

 bution of, in time, i. 133-149. 



Spongilla,, i. 134. 



Spongillojjsis, i. 134. 



Sporadopyle, i. 145. 



Squalodon, ii. 315, 316, 317. 



Scpunloraia, ii. 164. 



SquanuUa (Reptilia), ii. 189. 



Sqiuimulinideo,, i. 106. 



Sqtmtina, ii. 161. 



SquUla, i. 390. 



Stacheia, i. 113. 



Stagonolepis, ii. 190, 209, 211. 



Stauractinella, i. 146. 



Stauria, i. 208, 209, 210. 



Staurida, i. 210, 211. 



Staurocephalus, i. 377. 



Staiiroderma, i. 146. 



StOMrodermidce., i. 146. 



Steganodictyimi, i. 144. 



Stegodon, ii. 382. 



Stellaster, i. 252. 



Stemmatopteris, ii. 446, 452. 



Stenaster, i. 249. 



Steneofiber, ii. 409. 



Steneosaurus, ii. 209. 



Stephanastrum, i. 132. 



Stephanoceras, ii. 83. 



Stephanophyllia, i. 196. 



Stereodelphis, ii. 314. 



Stereognaihus, ii. 284, 291. 



Sternbergia, ii. 448, 462. 



Stiienuriis, ii. 295. 



Stigma.ria, ii. 436, 446, 460, 461. 



StomapocM, characters of, i. 389 ; dis- 

 tribution of, in time, i. 390. 



Stomatdla, ii. 27. 



Stomatia, ii. 28. 



Stoinatopora, i. 204. 



Siomechinus, i. 233. 



Straparollina, n. 24. 



Straparolus, ii. 24. 



Strata, contemporaneity of, i. 38. 



Stratodus, ii. 125. 



Streblopteria, i. 475. 



Strepsirhiruu, ii. 416. 



Strepsodus, ii. 142. 



StreptdasiTM, i. 213. 



Streptorhynchus, i. 452, 455. 



Streptospondybis, ii. 213. 



Striatopora, i. 200, 201. 



StricMa.ndinia, i. 451. 



Stringocephalus, i. 443. 



Strobilocystites, i. 291. 



Stromatopora, i. 137-139, 156, 172. 



Strombidm, ii. 5, 7. 



