386 



INDEX. 



lieptilla, ITi \ general characters of, 257, 

 etseq.\}Q.\y of, 25S; teetli of, ih.; cir- 

 culation of, 259 ; respiration of^ 260 ; 

 orders of, ib. 



Respiratory tree cf Holothnriatia, 110. 



Respiratory tubes of Ro'Jfera, 126, 126. 



Ukamphastidce, 302. 



Jihea, 291. 



Rhinocnroa, 331, 332. 



Jihizocephala, 150. 



Rhizocrinus, 108. 



lUnzitpi'ila, 21 ; general characters of, 

 24 ; divisions of, 25. 



lihizostoma, 80. 



Rhizu8to7n!d('\ 80. 



Rhytlna, 328. 



Ribbon-worrns (see N cmertldce). 



Rodent ia, 318; geueral characters of, 

 34i), et seq. 



Roebuck, 333. 



Rorquals, .SiO. 



Rose-cliaftr, 181. 



Rotifera, ll4; general characters of, 124, 

 et seq. 



Round- worms, 122, 123. 



Ritgosa, 85 ; characters of, 94, 



Rutnnhinda, 3.33; dentition of, 335; 

 stomach of, 336; families of, 337. 



Runners (Birds), 29J. 



Sable, 347. 



Sulaniandcrs, 253. 



Salamaiidra, 253. 



Salui'inidft.', 243. 



Sand-hopper, 144. 



Sand-pitiers, 2'.iC. 



Sand-star, 105, 106.' 



Sand-worui, ICO. 



Sanfjui^-uga, 130, 131. 



Sarcode, 250. 



Sarcoids nf Sponges, 43, 4.1 



Sauropsida, 227. 



Sanropterygia, 260; general characters, 



274, 

 Saururce, 306. 

 Saw-flies, 179. 

 Scallop, 201. 



Scansoreft, 293, 300, et seq. 

 Schtcus, 272. 

 Sciuridm, 351. 



Scierobasica (Zoantharia), 90. 

 Sclerobasic Corals, 87, !i2, ! 3. 

 Scleroderrnata (Zoa til h aria), 86. 

 Sclerodermic Corals, 87. 

 Scolecida, 112 ; general characters o."", 113. 

 Scolopacidre, 296. 

 Scolopendra, K^s. 

 Scomberidce, 243. 

 Scorpion, 151. 154, 15V 

 Scratchers (Birds), 297. 

 Sea-anemones, 85. 

 Sea-blubbers, 77, 78. 

 Sea-cucumbers, 109. 

 Sea-eggs, 99. 

 Sea-lemons, 204. 

 Seals, 346. 



Sea-mats, 187, 188, 189, 190. 

 Sea-mosses, 187. 

 Sea-mouse, 135. 

 Sea-pens, 91. 

 Sea-rods, 91. 

 Sea-slugs, 204. 



Sea-snakes, 2f>8. 



Sea-spiders, 163. 



Sea-squirts, 191. 



Sea-unicorn, 330. 



Sea-urchins, 99. 



Segmental orgaus of Annelides, 129. 



Selachii, 246. 



SetnnopitJwci, 357. 



Sepia, 213. 214, 216. 



Sepiola, 208. 



Serpula, 133. 



Sertularia, 66. 



Sertularida, 58; general characters of, 

 66; polypites ol, 67; reproduction of, 

 67. 



Sharks. 245, 246. 



Sheat-hsh, 243. 



Slieep, 339. 



Sliell, of Foraminifera, 30 ; of Brachio- 

 poda, 193 ; of Lamelhbranchiata, 198 ; 

 of Gasteropoda, 204 ; of Heteropoda, 

 205; of Pternpnda, 206; of the Argo- 

 naut, 212 ; of Pearly Nautilus, 215. 



Shrew-mice, 364. 



Shrikes, 304 



Sihirido-, 243. 



Siiihia, 359. 



Siphonophora, 58; general characters of, 

 72. 



Siphonops, 250. 



Siphons (of Lamellibranehiata), 199. 



SipiinciclitS, 128. 



Siredon, 251 



Siren, 251, 252. 



Sirenia, 317 ; general characters of, 327, 

 et seq. 



Skunk, 347. 



Sloths, 324, 325. 



Slow-wonn, 27^'. 



Snakes, £64, et seq. 



Snipes, 296. 



Solaster, 104. 



Solen, 201. 



Somatic cavity of Coelenterata, 51. 



Soricidce, 354. 



Spatularia, 245. 



Sperm-whale, 330. 



Sphcerozoum, 35. 



Spheniscidce, 295. 



Sphingidce, 178. 



Spider-crab, 141. 



Spider-monkeys, 357. 



Spiders, 151, 155, 15i\ 



Spinneret, of Spiders, 156; of Cater- 

 pillars, 177. 



Spiny Ant-eater, 319. 



Spirorbls, 133. 



Spirula, 214, 215. 



Sponges, 21 ; general characters of, 43, 

 et seq. ; aquiferous system, 45, 47; re- 

 production of, 4S ; distribution of, la 

 space, 49. 



Spongilla, 48, 49 ; reproduction of, 48. 



Spoon-wonn, 112. 



Springbok, 339. 



Spring-tails, 169. 



Squids, 213. 



Squilla, 142, 



Squirrel, 357. 



Star-fish, 103, 104. 



Starling, 304. 



Star-nosed Mole, 354. 



