INDEX. 
377 
Sirenia,” 24, 313; general characters ,] Sus, 3 
319, et seq. 
Skate, 22. 
Skink, 270. 
Skunk, 334. 
Slater, 20. 
Sloths, 24, 317, 318. 
Slow-worm, 269. 
Slug, 22. 
Snail, 22. 
Snakes, 257, 260, 264, et seq. 
Snipes, "94, 239, 292, 204. 
Solaster, 19, 110. 
Solen, 197. 
Somatic cavity of Celenterata, 55. 
Sorez, 341. 
Soricide, 25, 340. 
Sparrow,(301. 
Spatangus, 19. 
Spatularia, 22, 244. 
Sperm-whale, 24, 322. 
Spheniscidce, 22, 291. 
Spider-crab, 142. 
Spider-monkeys, 25, 343. 
Spiders, 20, 163. 
Spinax, 245. 
Spinneret of Spiders, 154 ; 
pillars, 172. 
Spirorbis, 138, 184. 
Spongida, 17,30, 58 ; general characters 
, of, 42, et seq. 5 aquiferous system, 44 ; 
"reproduction of, ib. ; distribution of, in 
space, 46. 
Spongilla, 17, 31, 44, 58; reproductio n 
of, 45. 
Spoon-worm, 19, 129, 130. 
Springbok, 329. 
Spring-tails, 21, 165. 
Squids, 205, 210, 211. 
Squilla, 20, 148. 
Squirrel, 25, 338. 
Stag, 25. 
Sine beetle; 178. 
Star-fish, 19. 
Starling, 24.°301, 
Star-nosed Mole, 341." 
Stentor, 5, 51, 52. 
Stephanoceros, 126. 
Stomapoda, 20, 148. 
Storks, 23, 289, 294. 
Strepsiceros, 329. 
Strepsirhina, 342, 
Strepsiptera, 21, 175, 178. 
Strigide, 24, 304. 
Scruthio, 24, 295. 
Sturgeon, 22, 228, 281, 242. 
Sturio, 22, 242. 
Sturionide, 248. 
Sturnide, 24, 301. 
Stylops, 21, 178. 
Sub- kingdoms, Ly is, 
Suctoria (Infusoria), 17, 53. 
Suctorial worms, 19. 
Suida,°25, 324. 
Sula, ee 
Sun- star, 
Surinam Toads, 23, 254. 
of Cater- 
325. 
Swallows 24, 289, 303. 
Swan, 291, 292, 
Swifts, 24, 283, 303. 
Swim-bladder of Fishes, 284. 
Swimmers (Birds), 23, 289, 290. 
Swimming-bells, 75, 76, 77, 80. 
Sword-fish, 231. 
Sylviade, 302. 
Syncoryne, 67. 
Syngnathide, 242, 
Syrinz, 129. 
Tabanide, 176. 
Tenia, 19, 119, 120. 
Teniada, 19, 117; general characters 
of, 118 ; development of, 119. 
Talitrus, 20, 186, 148. 
Talpa, 340, 341. 
Talpide, 25, 340. 
Tantalince, 294. 
Tape-worm, 19, 117, 118, et seq. 
Tapir, 25, 398, 324, 
Tasmanian Devil, 24, 317. 
Tegenaria, 20, 150. 
Teleostei, 22, 286; general characters 
of, 210, et seq. 
Tenrec, 341, 
Tenthredinide, 1738, 174. 
Tenutrostres, 302. 
Terebratula, 21, 191. 
Termites, 21, 168, 169. 
Tern, 291, 2y2. 
Terrapin, "98, 263. 
Test of Foramini ifera, 37 ; of Echinoidea, 
105 ; of Tunicata, 188. 
Testudinide, 28, 264. 
Testudo, 264. 
Tetrabranchiata, 207, 210, 211, 213. 
Tetranychus, 152. 
Tetras, 297. 
Tetraonide, 297. 
Thatassicolla, 17, 42, 58. 
Thalassicolida, 42. 
Thaumantias, 80. 
Theridion, 153. 
Theriomorpha, 252. 
Thick-knee, 294. 
Thorn-headed worms, 19. 
Thread-cells (see Cnide). 
Thread-worms, 19, 124. 
Thrush, 24, 302. 
Thylacinus, 317. 
Thyone, 115. 
Thysanura, 21, 165. 
Ticks, 20, 151. 
Tiger, 25, 331, 335, 336. 
Tipula, 21, 170, 171. 
Toads, 23, 247, "252, 258, 254. 
Tongue of Gasteropods, 198 ; of Cephalo- 
poda, 207. 
Toothed Whales, 322. 
Tortoises, 23, 257, 258, 260, 261, et seq. 
Toucan, 24, 300. 
Trachez, 150, 161. 
Trachynema, 18. 
Tree Frogs, 23. 
