INDEX 



557 



Stein, W., 381. 



Stejneger, L., 372. 



Stegocephalia, 359. 



Stegomyia, 203. 



Sterility, 87. 



Sternum, 329. 



Stevens, 102. 



Stigma, of bees, 298. 



Stimulus, 10. 



Stobseus, 166. 



Stockard, Charles R., 121, 123. 



Stomata, 31. 



Stomias boa, 478. 



Stone flies ; see Perloidea. 



Storks ; see Ciconiiformes. 



Strepsiptera, 276. 



Strongylus, 234. 



Struthioniformes, 383. 



Styela, 322. 



Stylocephalus, 192. 



Subspecies, 119. 



Substance ; see Matter. 



Suctoria, 193. 



Sudburian Period, 148. 



Suidae, 410. 



Sumner, 119. 



Sun animalcules (Heliozoa), 192. 



Sundew (Drosera), n. 



Sunflower, red (Helianthus), 51-61; 

 as typical of Mendelian phenom- 

 ena, 51-61; collarette of, 59; see 

 also Mendel; Mendelism. 



Susceptibility, 490. 



Sweat, 30. 



Symbiosis, 94. 



Symphyla, 266. 



Synapsis, 69, 71, 72. 



Synapta, 218, 225. 



Synonyms vs. homonyms, 174. 



Synthetic amino-acids, 8. 



Systema Naturee, 172. 



Tachyglossus (Echidna), 396. 

 Tsenia, 231; T. solium, 232. 

 Tapeworms ; see Cestoda. 

 Tardigrada, 254. 

 Tarsus, 332. 

 Tayassuidae, 410. 

 Taylor, J. W., 115. 



Teleostomi, 345; Teleostei, 349-357. 



Temnocephaloidea, 229. 



Temperature vs. life, 455. 



Tennesseian Epoch, 148. 



Termes flavipes, 271. 



Termites ; see Isoptera. 



Tertiary (Cenozoic) Era, 140, 148, 



154- 



Testudo vicina, 368. 



Tetrabelodon (Trilophodon), 425, 



426, 427. 



Thaumatostomias atrox, 478. 

 Thompson, 373. 

 Thrassetus harpyia, 388. 

 Threadworms ; see Nemathelminthes. 

 Three-to-one ratio, 45; see also 



Mendelism. 



Thrips ; see Thysanoptera. 

 Thysanoptera, 273. 

 Thysanura, 268-269, 286. 

 Tibia, 332. 



Tibicina septendecim, 277. 

 Ticks, disease carriers, 206. 

 Tierra caliente, 447. 

 Tillandsias, 465. 

 Tipula, 279; T. maclurei, 162. 

 Tissues, 22-30, 94, 138, 186; blood, 



25; connective, 24; function of, 



25, 27, 28; muscle, 27; nerve, 28; 



skin, 23 ; structure of, 22-24. 

 Tortoise ; see Chilonia. 

 Trachea, 23, 36. 

 Transition Life Zone, 459. 

 Trematoda, 229, 230-231. 

 Triassic Period, 148, 151. 

 Trichia, 189. 

 Trichinella, 235. 

 Trichinosis, 235. 

 Trichoptera, 273, 289. 

 Trigona, 297. 

 Trilobita, 257. 

 Trilophodon (Tetrabelodon), 425, 



426, 427. 



Trimorphism, 299. 

 Trochelminthes, 181, 235. 

 Tropical Life Zone, 462, 463-466. 

 Truth, 2. 

 Trypanosoma, 189, 200, 204, 206; 



T. brucei, 205 ; T. gambiense, 205. 



