702 



INDEX. 



589 ; families of, 591 ; distribution of, in 

 time, 543. 

 Rupicapra, 506. 



Sabella, 211, 216. 



Sabellaria, 211. 



Sable, 611. 



Saccosoma, 181. 



Sa-nuridce, 209. 



Sagitta, 216. 



Salamanders. 437, 438. 



Salamandra, 438, 441. 



Salmonid;e, 409. 



Salpidcs, 310, 311. 



Sand-pipers, 510. 



Sand-worms, 213. " 



Sanffuisuga, 208, 209. 



Sarcode, 48 ; characters of, 48, 49. 



Sarcodtctyum, 138. 



Sarcoids, of Sponges, 70, 71, 73. 



Sarcoptes, 26 ). 



Sarcorhampus, 532. 



Sarsia, 112, 113. 



Sauria, 461. 



SaurMus, 467. 



Saurobatrachia, 435 (see Urodela). 



Sauropsida, 384, 444 



Sauropterygia, 448 ; general characters of, 

 473 ; distribution of, in time, 474. 



Saururae, 499, 501 ; characters of, 532 ; 

 distribution of, in time, 535. 



Saw-fish, 423. 



Saxicava, 329. 



Scalaria. 34th 



Scalops, 628. 



Scalpellum, 232. 



Scansores, 501 ; characters of, 5 19; fami- 

 lies of, ib. et seq. 



Scaphites, 358. 



Scaphognathite, 2-24. 



Scelidotherium, 649. 



Scincidce, 462. 



Set news, 463. 



Scissurella, 340. 



Sciuridie, 622. 



Sciuropterus, 622. 



Sciurus, 622. 



Sclerenchyma, 132. 



Sclerobasica (Zoantharia], 130 ; divisions 

 of, 133. 



Sclerobasic corallum, 130, 132. 



Sclerodermata (Zoantharia), 134; divi- 

 sions of, 134, 15-2. 



Sclerodermic corallum, 13), 134. 



Sderogenida-, 411. 



Scolecida, 154,155; characters and divi- 

 sions of. 183, e seg. 



Scolex, 186, 188, 189. 



Scolites, 216. 



Scolopacidce, 510. 



Scolopendra, 265, 266. 



Scomberidce, 411. 



Scorpion, 256, 261, 262. 



ScorpionidcE, 261; characters of, t'6.; dis- 

 tribution of, in time, 264. 



Scutigera, 265. 



Scyllva, 341. 



Scyllaridce, 221. 



Scythrops, 520. 



Sea-anemones, 128. 



Sea-cucumbers, 177. 



Sea-hares, 336, , 



Seals, 606. 



Sea-mouse, 213. 



Sea-slugs, 336. 



Sea-spiders, 258. 



Sea-worms, 213. 



Segmental organs, of Leeches, 208 ; of 

 Earthworm, 210; of Errant Annelides, 

 2 13. 



Sdachii, 418, 422 ; characters of, 422. 



Semnopithecus, 634. 



Sepia, 358. 



Sepiadce, 352, 358. 361. 



Sepiola, 345. 



Sepiostaire, 349, 352. 



Septa, of Corals, 131, 135; of the shell of 

 Tetrabranchiate Cephalopods 349, 353 

 355, 356. 



Seriatoporidce, 152. 



Serpentarius, 531. 



Serpula, 2l2. 



Serpulites. 216. 



Sertularida, 91 ; characters of, 98 ; hydro- 

 thecae of, 99; polypites of, 99; repro- 

 duction of, 100; development of, IK! ; 

 distribution of, in space and time, 1^3, 



Setae, of Annelides, 206 207, 209 210 

 2i3. 



Sharks, 419, 422, 43 J. 



Sheat-fishes, 4j9. 



Sheep, 597. 



Shell, of Mollusca, 245, 297 ; of Brachio- 

 poda, 312, 313 ; of Lamellibmnchiata, 

 3-21 ; of Gasteropoda, 333 ; of Hetero- 

 poda, 337 ; of Pteropoda, 342 ; of A r- 

 oonauta, 349, 350 ; of Nautilus, 349, 

 353; of Tetrabranchiate Cephalopods, 

 354, 355. 



Shrew-mice, 628. 



Shrew-mole, 628. 



Shrikes, 526. 



Siamang, 636. 



Sigaretus, 339. 



Silicea (Sponges), 73, 76. 



Siluridce, 4o9. 



Silurus, 4u9. 



Simia, 63t5. 



Simosaurus, 474. 



Sinupallialia, 325, 327, 328. 



Siphonia, 74, 75. 



Mphonida, 326, 327. 



Siphonophora, 9j ; characters of, 103: 

 divisions of, ib. et seq. 



Siphonops, 434. 



Siphonostomata, (Gasteropoda), 334 335 

 339. 



Siphonotreta, 317. 



Siphons, of Lamellibranduata, 324 ; of 

 Gasteropoda, 332. 



Siphuncle, of the shell of Nautilus, 34>, 

 353, 355 ; of Belemnites, 353 ; of Tetra- 

 branchiata, 355, 356 ; of Naut lidae, 356 ; 

 of Ammonitidce. ib. ; of Oi-tkoceras, 

 357. 



Si'punculacea, 205. 



Sipunculoidea, 203. 



Sipunculus, 204. 



Kiredon, 436, 437. 



Siren, 435, 436. 



Sirenia, 538, 540, 543, 543, 551, 552 ; char- 

 acters of, 570, et seq. ; distribution of, 



, in time, 644. 



