INDEX. 483 



Sacculus rotundus : RahUt^ 335 



Saccus vasculosus : Dog-fish, 275 



Sacrum : Itabbit, 292 ; Fowl, 4C1 



Salivaiy receptacle : Cocki-oachj 172 



Scale : Dog-fish, 213 



Scaphocerite : Craufish, 143 



Scaphognathite : Crayfish, 142, 146 



Scapula: Rabbit, Zli.; Fowlt^lQ 



Scapus : Pigeon, 426 



Sclerite: Crayfijsh, 133,153; CockroacJi^lQd 



Sclerotic : Dog-fish, 278 



Sclerotic plate: Pigeon, 456 



Scrotal sac : Rabbit, 338, 354 



Scyllium, see Dog-fish. 



Secondary quill : Pigeon, 427 



Segmental organ, see Nepliridium * 



Segmentation : Leech, 39 ; Earthtcorm, 59 ; Cravfish, 132 ; Cockroach^ 161 



Segmentation of skull : Rabbii, 296 



Sella turcica : Rabbit, 297 



Semicircular canal : Dog-fish, 220-221, 280-281 ; Pigeon^ 458 



Seminal funnel : Earthtcorm, 73 



Sense-capsulea : Dog-fish, 217 ; Rabbit, 330 



Sense-organs: Leech, 52; Mussel, 100; Snail, 127; Crayfish, 157; Cockroach^ 175; 



Amphioxus, 193 ; Dog-fi^h, 278 ; Pigeon^ 454 

 Septum : Earthtcorm, 63, 79; Amphioxvs, 183, 199 

 Septum auricularum : Rabbit, 350 ; Pigeon, 446 

 Septum interorbital : i^otoZ, 404, 409 

 Septum lucidum, : Rabbit, 388 

 Septum narium : Dog-fi^h, 219 ; Rabbity 310 

 Septum obliquum : Pigeon, 434 



Sesamoid bone : Rabbit, 283, 319 ; see also Fabella, Patella 

 Seta : Earthu>orm, 61, 78 

 Shell : Mussel, 82 ; Snail, 109, 112 

 Shell-gland : Liver-fluke, 33 



Sinus, blood : Leech, 45, 46, 56 ; Snail, 130 ; Crayfish, 147 

 anterior cardinal : Dog-fish, 242, 243 

 coronary : Dog-fish, 254 

 Cuvierian : Dog-fi^h, 242 

 genital : Dog-fish, 245 

 iiepatic : Dog-fish, 242 

 byoidean : Dog-fi^h, 243 

 inferior jugular : Dog-fish, 242 

 inter-orbital : Dog-fish, 222, 243 

 orbital : Dog-fish, 221, 243 

 posterior cardinal : Dog-fish, 242, 243 

 post-orbital : Dog-fish, 243 

 venosus : Dog-fish, 239, 241, 253 

 Sinus, genital : Liver-fluke, 33 

 urinary : Dog-fish, 258 

 urino-genital : Dog-fish, 262 

 Skate, 210 



Skeleton: ^m;jMoa:us, 182,195, 197, 199; 2)oj7-jfe7/, 214 ; iSaSSiY, 283 ; Fowl, 338 

 Skeleton, appendicular : Rabbit, 313 ; -foi^Z, 416 

 axial : Rabbit, 285 ; Fowl, 396 

 brancliial : .dbmpMoxu.'i, 185, 197 

 buccal : Amphioxus, 182, 197, 199 

 endophragmal : Crayfish, 165 

 of fins : Amphioxus, 182, 195, 199 ; Dog-fish, 228 

 mammalian, 284 

 visceral : Dog-fish, 225 

 Skin, &ee Integument 



Skull : Dog-fish, 217 ; Rabbit, 294 ; Foicl, 404 



Snail, 109-131 ; external characters, 109 ; mantle-cavity, 115 ; digestive system, 119 ; 

 reproductive system, 123 ; nervous system, 126 ; sense organs, 127 ; buccal 

 mass, 128 ; circulatory system, 129 

 Somite : Leech, 39 

 Spermatid : Earthworm, 75 



Spermatozoa : Uydra, 22 ; Leech, 50 ; Earthworm., 74-75 ; SvwM, 123 ; Crayfish, 150 ; 

 Amphioxus, 194 ; Dog-fish, 263 



Ii2 



