514 INDEX. 



Snail, 117-139 ; external character?, 117 ; mantle -cavity, 123 ; digestive system, 127 ; 



reproductive system, 131 ; nervous system, 134 ; sense-organs, 1 35 ; buccal 



mass, 136 ; circulatory system, 137 

 Somatopleur : Chick, 475 

 Somite : Leech, 46 ; Chick, 475 

 Spermatid : Earthworm, 83 



Spermatophore : Leech, 59 ; Earthworm, 79 ; Snail, 132 

 Spermatozoa: Hydra, 26 ; Leech, 57 ; Earthworm, 82, 83 ; Snail 131 ; Crayfish, 158 ; 



Amphioxus, 202 ; Dog-fish, 271 

 Spermocyte : Earthworm, 82 

 Spermogonia : Earthworm, 82 



Spermotheca: Earthworm, 79, 93; Snail, 133 ; Cockroach, 185 

 Sperm-sac : Dog-fish, 269 

 Sphenoidal fissure : 2?a&&ft, 306, 307 

 Spinal cord : Amphioxus, 199, 206, 208 ; Dog-fish, 285 

 Spinous process, see Vertebra 

 Spiracle : Cockroach, 173, 180 ; Dog-fish, 221 

 Spiral valve : Dog-fish, 242 

 Splanchnopleure : Chick, 475 

 Spleen : Dog-fish, 241 ; Rabbit, 341 ; Pigeon, 440 

 Splenial : f otf, 420 

 Sporocyst, 43 



Sporozoite : Monocystis, 14 ; Coccidium, 17 

 Squamosal : Rabbit, 316 ; jfoutf, 412, 413 

 Stapes : Rabbit, 314 

 Sternebra: Rabbit, 302 



Sternum : Crayfish, 142, 144 ; Cockroach, 173 ; #a&&#, 302 ; Fowl, 408 

 Stigma : Cockroach, 173, 180 

 Stipes: Cockroach, 174 

 Stomach : Zeecft, 52 ; Mussel, 109 ; 5nai7, 129 ; Crayfish, 160, 161 ; Amphioxus, 194 ; o?- 



fish, 240; 2ta&&&, 339, 341, 346; Pigeon, 445 

 Stomodoeum : Crayfish, 159, 160 ; Cockroach, 178 ; Ctacfc, 479 

 Stylo-hyal : Rabbit, 317 

 Submentum : Cockroach, 175 

 Suborbital ridge : Dog-fish, 229 

 Sucker : Liver-fluke, 35, 44 ; Z^cTj, 47 

 Sulcus : Rabbit, 389, 399 

 Supporting lamella : Hydra, 22, 24, 28, 30 

 Supra-angular: Fowl, 419 



Supra-branchial passage or chamber : Mussel, 95, 100, 112, 113, 116 

 Supra-occipital : Rabbit, 304 

 Supra-orbital crest : Dog-fish, 228, 229 

 Supra-orbital process : Rabbit, 309 

 Suprascapula : Rabbit, 324 



Suspensory fold of pharynx : Amphioxus, 195, 211, 213 

 Swimmeret, see Abdominal appendage 

 Sylvian aqueduct : Rabbit, 399 ; Pigeon, 459 

 Sylvian fissure : Rabbit, 387 

 Symphysis pubis : Rabbit, 331 

 Syrinx : Pigeon, 454 



Tapetum : Dog-fish, 287 



Tapeworm, 45-48 



Tarso-metatarsus : Fowl, 427 



Tarsus : Cockroach, 177 ; Rabbit, 328, 333 



Teat: Rabbit, 338 



Teeth: Crayfish, 161, 162; Cockroach, 179; Dog-fish, 222, 234; Rabbit, 291, 321 



Telson: Crayfish, 144 



Tentacle : Hydra, 20, 22 ; Mussel, 97 ; Snail, 118 ; Amphioxus, 189, 204, 205 



Tentorium : Cockroach, 182 ; Rabbit, 389 



Tergum : Crayfish, 142 ; Cockroach, 172 



Testis : .Hydra, 26 ; Liver-fluke, 37 ; icccA, 57, 64 Earthworm, 81, 82 ; Mussel, 110 ; 



Crayfish, 158 ; Cockroach, 184 ; Amphioxus, 202, 204, 214 ; Dog-fish, 241, 



267 ; iZoW>ft, 364, 365 ; Pigeon, 454 

 Thalamencephalon : Dog-fish, 273, 285 ; Rabbit, 390, 395, 399 ; Pigeon, 459 

 Thoracic appendage : Crayfish, 142 ; Cockroach, 175 

 Thoracic duct : Rabbit, 359 



Thorax: Crayfish, 144; Cockroach, 171; iZo6&t<, 337, 347 

 Thread-cc.ll: Hydra, 23, 24, 28, 30; ec ateo Trichocyst 



