481 INDEX. 



Spermocyte: Earthtrorm, 75 



Spermogonla : Earthworm, 74 



Spcrmatophore : Leech, 51 ; Snail, 124 



Spcrmotheoa : Earthuorm, 71, 74 ; Snail, 125 ; Cockroach, 177 



Sperm-sac : Dog-fish, 261 



Sphenoidal Assure : RaMt, 297-298 



Spinal cord : Amphioxus, 191, 198, 200 ; Dog-fish, 27 



Spinous process, see Vertebra - 



Spiracle : Cockroach, 105, 173 ; Dog-fish, 213 



Spiral valve : Dog-fish, 234 



Spleen : Dog-fish, 233 ; Ra'iUt, 331 ; Pigeon, 435 



Splenial ; Fowl, 415 



Sporocyst, 36 



Squamosal : RaWt, 306 ; Fowl, 407, 408 



Stapes : Ralhit, 304 



Sternebra: Babbit, 294 



Sternum : Crayfish, 13t, 138 ; Cockroach, 165 ; i!aJ!ii(, 294 ; Fowl, 403 



Stigma ; Cockroach, 165, 172 



Stipes : Cockroach, 166 



Stomach : Leech, 45 ; Mvssel, 101 ; 5nat7, 121 ; Crayfish, 152, 153 ; Amphioxus, 186 ; -Oofir- 



/i«A, 232 ; iJa6M(, 329, 331, 33G ; Pigeon, 436 

 Stomodoeum : Crayfish, 151, 152; Cockroach, 170 

 Stylo-hyal : Raiiit, 307 

 Submentum : Cockroach, 167 

 Suborbital ridge : Dog-fish, 221 

 Sucker : Lirer-fiuke, 28, 37 ; ieccA, 40 

 Sulcus : Rabbit, 379, 3S9 

 Supporting lamella : Hydra, 18, 20, 24, 25 

 Supra-angular : Fowl, 414 



Supra-branchial passage or chamber : Mussel, Z7, 92, 104, 105 108 

 Supra-occipital : 72^!»&^Y, 290 

 Supra-orbital crest : Dog-fish, 220, 221 

 Supra-orbital process : Rabbit, 299 

 Suprascapula : Rabbit, 314 

 Suspensorium : Dog-fish, 227 



Suspensory fold of pharynx : Amphioxus, 187, 203, 205 

 Swimmeret, see Abdominal appendage 

 Sylvian aqueduct : Rabbit, 393 ; Pigeon, 454 

 Sylvian fissure : Rabbit, 331 

 Symphysis pubis : Rabbit, 321 

 Syrinx : Pigeon, 449 



Tapetum : Dog-fish, 279 



Tarso-metatarsus : Fowl, 422 



Tarsus : CoclToach,169 ; Rabbit, 318, 323 



Teat: Raibit,32S 



Teeth : Crayfish, 153, 154 ; Cockroach, 171 ; Dog-fish, 214, 226 ; Rabbit, 283, 311 



Telson: Cray fish, IX 



Tentacle : Hydra, 16, 18 ; Mussel, 88 ; Snail, 110 ; Amphioxus, 181, 196, 197 



Tentorium ; Cockroach, 174 ; Rabbit, 379 



Tergum : Crayfish, 134 ; Cockroach, 164 



Testis : Hydra, 22 ; Liver-fluke, 30 ; isccft, 60, 57 ; Earthworm, 73, 74 ; Mussel, 102 ; 

 Crayfish. 160 ; Cockroach, 176 ; Amphioxus, 194, 196, 206 ; Dog-fish, 233^ 

 259 ; AoiftlV, 354, 366 ; Piyeon, 450 » ,• . » 



Thalamcncephalon ; Dog-fish, 265, 277 ; flaMiV, 380, 385, 389 ; Pigeon, 454 



Tlioracic appendage : Crayfish, 138 ; Cockroadi, 167 



Thoracic duct : Rahtnt, 349 



Tliorax : Crayfish, 136 ; CocA-rouc/i, 163 ; RaMt, 327, 387 



Thread-cell : Hydra. 19, 20, 24, 26 ; see also Trichocyst 



Thj'mus : Rabbit, 837 



Thyi-oid body : Rabbit, 363 



Thyroid cartilage : Rabbit, 363, 3G9 



Tibia : Cockroach, 169 ; Raibit, 322 



Tibio-tarsus : Fowl, 422 



Tongue : Cockroach, 170 ; Rabbit, 373 ; Pigeon, 433 



Tonsil : fluMiY, 373 



Trachea : Rabbit, 362 ; Pigeon, 448 



Tracheal tube : Cockroadi, 172-173 



Trsnsverse process : Dog-fish, 216 ; see o!so Vertebra 



