INDEX 



56i 



Sternum, 255, 336 ; of birds, 465, 488 ; 

 of frog, 415 ; of reptiles, 443. 



Stichotricha, 53. 



Stickleback, 406. 



Stigma, 36. 



Stigmata, of ascidians, 315 ; of in- 

 sects, 248 ; of scorpion, 257. 



Stinging ca psules, 52, 95, 108; of 

 nemertean JMjk^uo. 



Stomach, ch^H HP 



Stomach, of mMUKIls, 506; of star- 

 fish, 163 ; of vertebrates, 374, 418. 



Stomach, sucking, of insects, 246. 



StomodEeum of Nematoda, 152. 



Stomogastric nerves, 195. 



Stone-canal of Echinoderms, 165. 



Strepsiptera, 252, 



Streptoneura, 295. 



Strongylocentrotus, 171. 



Struthio, 483. 



Sturgeon, 399, 400. 



Stylasler, 104. 



Stylet of nemertean worms, 145. 



Sucker of distoma, 130, 136. 



Suprascapular bone of frog, 414. 



Suspensorium, 414. 



Sutures of skull, 496. 



Swan mussel, 265. 



Swift, 490. 



Swimming, act of in squid, 304, 

 308. 



Sycon ciliatum, 76; gelatinosum, 

 76. 



Sylvian fissure, 515. 



Symbiosis, 33. 



Symmetry, bilateral, of worms, 130; 

 radial, 176. 



Sympathetic nerves of vertebrates, 



381, 5*7- 

 Symphysis, of jaw, 500; pubic, 352, 



502 ; of frog, 416. 

 Synapta, 174. 

 Syncrypta, 37. 

 Syncytial ectoderm, 151. 

 Syngnathus, 404. 

 Syn-sacrum, 465, 487. 

 Syrinx, 488. 



Tadpole, 429. 



Taenia ccenurus, 143; echinococcus, 

 143, 144; saginata, 142, 144; ser- 

 rata, 142; solium, 139, 141, 144. 



Tail, diphycercal, 396; heterocercal, 

 367, 396; homocercal, 367, 396. 



Tailor bird, 490. 



Talpa, 542. 



Tape-worms, 138, 144; human, 138, 

 141. 



Tapir, 526, 538. 



Tarso-metatarsus, 472. 



Tarsus, 342, 411, 503 ; of insects, 244. 



Tealia crassicornis, 115. 



Teeth, dermal, 467 ; heterodonl, 523 ; 

 homodont, 523 ; thecodont, 523 ; of 

 leech, 205; of sharks, 392; of shells, 

 267 ; stomach, of crawfish, 220 ; of 

 vertebrates, 343, 418, 446, 504; ca- 

 nine, 505; incisor, 504; molar, 

 505 ; premolar, 505. 



Teleostei, 394. 



Teleostomi, 394. 



Telson, 217. 



Tentacles, 48, 50, 91 ; of annelid 

 worms, 189; of crinoids, 176; of 

 molluscs, 289; of starfish, 160. 



Tentaculifera, 48, 50, 51. 



Tentaculocysts, 101. 



Terebra oculata, 289. 



Terebratulina septentrionalis, 187. 



Teredo navalis, 279, 280, 



Tergum, 255. 



Tessera princeps, 113. 



Test, 19; of ascidians, 315. 



Testes, 101, 132; of birds, 481; of 

 Crustacea, 228 ; of fluke-worm, 132; 

 of frog, 427; of mammals, 520; of 

 Nematoda, 153; of starfish, 167; 

 of vertebrates, 359. 



Tetrabranchiata, 299, 308. 



Tetramita, 37. 



Tetrastemma, 147. 



Texas cattle disease, 260. 



Texas cattle fever, 58. 



Theca, 92, 120. 



Thecodont teeth, 523. 



