INDEX. 



555 



Teleostei, 90 ; teeth, 142 



Teleostoidei, 92 



Terebella ; figure, 55 



Termitidae, 77 ; gnathites, 133 



Tetrabranchiata, 82 



Thecosomata, 82 



Theriomorpha, 95 



Torpedo ; electric org-ns, 269 



Tortoise ; shell, 366 ; braiu, 4.2 



Toxotes, 93 



Tracheata, 74 



Traguius ; blood corpuscles, 182 



Trichina, 50, 548 



Trichoptera, 77 ; gnathites, 131 



Tridacna. 80^ shell, 308 



Triton, 93 ; shell, 307 



Tubicolse, 55 ; setae, 288 



Tubifex, 56 



Tubipora ; figure, 43 ; skeleton, 

 283 



Tunicata, 86; eye, 452 ; ear, 464 



Tupaia ; braiu, 425 



Turbellaria ; digestion, 107, 113 ; 

 circulation, 185 ; respiration, 

 211 ; nephridiurn, 249 ; nervous 

 system, 400 ; tactile organs, 433 ; 

 eyes, 445 



Turtle ; heart, 197 ; skeleton, 320 ; 

 skull, 339 



Typhlops, 96 



Ungulata, 99 ; feet, 355 

 Urochordata, 86 ; digestive tract, 



139 ; vascular system, 192 ; re- 

 spiration, 231 ; renal organ, 257 ; 

 uotqchord, 313 ; larva, 544. See 

 Tunicata. 



Urqdela, 93; respiratioa, 236; 

 kidneys, 259 ; gonads, 506 



Uropeltis, 96 



Vaeantia, 55 



Velella, 41 



Vertebrata, 88; digestive tract, 

 140; teeth, 141; tongue, 157; 

 intestine, 161 ; liver, 175; blood, 

 181 ; vessels, 194 ; retia mirabilia, 

 208 ; haemoglobin, 212 ; respira- 

 tion, 231 ; renal organ, 257 ; 

 vertebral column, 314; skull, 

 323; limbs, 347; vocal organ, 

 390; brain, 417; spinal cord, 

 430; sensory organs, 435, 437, 

 440, 453, 463 ; gonads, 505 



Viper ; fang, 147 



Vorticellids, 30 ; contractile va- 

 cuoles, 247 ; movements, 371 



Whales ; see Cetacea, 99 

 "Wolf; teeth, 152 

 Woodpecker; tongue, 156; skull, 

 341 



Xiphacantha ; figure,?8 ; skeleton, 

 277 



Zygobranchiata, 81 



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