INDEX. 



599 



Rhinolophus, 462. 



Rhizocrinus, 118, 128. 



JRhizodus, 326, 328, 329. 



Rhizopoda, 59, 60. 



Rhizostornidce, 74. 



Rhodocrinv*, 126. 



Rhombus, 317, 318. 



Rhus, 503. 



Jthynchoceti, 419, 420. 



Rhyncholites, 273. 



Rhynchonella, 199, 203, 207. 



Rhynchonellidce, 201-203, 207. 



Rhynchosaurus, 362-364, 373, 374. 



Rhynchoteuthis, 273, 274. 



Rhytidolepis, 491, 493. 



Rimula, 258. 



Rissoa, 254. 



Robinia, 503. 



Robulina, 62. 



Rodentia, characters of, 456 ; distribution 



of, in time, 457. 

 Roebuck, 436. 

 Rostellaria, 247, 252. 

 Rotalia, 62, 64. 

 Rudistes, 231. 

 Rugosa, 97 ; distribution of, in time, 99 ; 



families of, 101. 

 Ruminantia, characters of, 431 ; families 



of, 433. 



SABAL, 501. 

 Sabella, 137. 

 Sabellaria, 137. 

 Saccosoma, 122, 127. 

 Sagenaria, 480, 491. 

 Salamander, 347. 

 Salenia, 107, 110. 

 Saleniadce, 111). 



Salmonidce, 316. 

 Sao, 169. 

 Sassafras, 500. 

 Satwia, 362. 

 Saurichthys, 534. 

 Saurillus, 364. 

 Saurocetes, 4'22. 

 Saurodipterini, 326, 327. 

 Sauroid Fishes, 327. 

 Sauropsida, 353. 

 Sauropterygia, 370-372. 

 Saurosternon, 364. 

 Saururce, 390, 396. 

 Saxicava, 238. 

 Scalaria, 243, 253.' 

 Scales of Fishes, 307. 

 Scalpellum, 154. 

 Scansores, 394. 

 Scaphaspis, 332. 

 Scaphites, 288, 292. 

 Schizodus, 229, 530. 

 Scissurella, 256, 257. - 

 Seiuridce, 460. 

 Sciurus, 460. 

 Sclerenchyma, 96. 

 Sclerobasica (Zoantharia), 87. 

 Sclerobasic Corals, 87. 

 Sclerodermata (Zoantharia), 88. 

 Sclerodermic Corals, 88. 

 Sclerogenidce, 318. 

 Scolecida, 102. 

 Scoliostoma, 534. 

 Scolites, 142. 



Scolithus, 142. 



Scolopax, 392, 546. 



Scomberidce, 318. 



Scorpion, 181-183. 



Scorpionidce, 182. 



Scutella, 104, 109. 



Scyphia, 537. 



Sea-anemones, 80, 81. 



Sea-cucumbers, 135. 



Seals, 449, 450. 



Sea-Mosses, 187. 



Sea-Urchins, 103. 



Sedimentary Rocks, origin of, 6. 



Selachii, 337, 340. 



Semionotus, 324. 



Semnopithecus, 466. 



Sepia, 275, 295. 



Sepiadce, 275, 294, 295. 



Septa, of corals, 91, 92; of the shell of 

 Tetrabranchiate Cephalopods, 279, 280. 



Sequoia, 502. 



Seraphs, 247. 



Seriatoporida;, 97, 100. 



Serpula, 137, 138, 140. 



Serpulites, 139. 



Sertularida, characters of, 76 ; distribu- 

 tion of, in time, 77. 



Sessile Cirripedes, 150-152. 



Sharks, 336, 340. 



Shell, of Balanoids, 150; of Lepadoids, 

 152; of MoUvsca, 187; of Brachiopoda, 

 199 ; of Lamellibranchiata, 214 ; of 

 Gasteropoda, 242 ; of Pteropoda, 269 ; 

 of Tetrabranchiate Cephalopods, 279. 



Shrew-mice, 463. 



Sieboldia, 349. 



Sigillaria, 474, 482, 491-494. 



Sigillarioids.474,475, 480, 482, 491-494, 529. 



Silicispongia, 67, 68. 



Silurian period, rocks of, 515; life of, 

 517 ; flora of, 478. 



Siluridce, 316, 317. 



Simosaurus, 372. 



Sinupallialia (Lamellibranchiata), 218, 

 236. 



Siphonia, 66, 70. 



Siphonida (Lamellibranchiata}, 218, 219. 



Siphonostomata (Gasteropoda], 244-246. 



Siphonotreta, 212, 213. 



Siren, 347. 



Sirenia, characters of, 417; distribution of, 

 in time, 418. 



Sivatherium, 438, 439. 



Skiddaw Slates, 512, 514. 



Slimonia, 173. 



Sloths, 413, 414. 



Smito, 502. 



Snakes, 360. 



Solarium, 254. 



Solaster, 111. 114. 



Solecurtus, 237. 



SoZen, 237. 



Solenastrcea, 96. 



Solenidce, 218, 237. 



Solid axis, of Graptolites, 80. 



Solidungula, 423, 427. 

 Solipedia, 423. . - 



Sore*, 463. 



Soricidce, 463. 

 Spalacodon, 462. 

 SpalacotheriuM, 411. 

 Sparsispongia, 69. 



