INDEX 



503 



Saccule, 39, 114, 158 

 Sacculus rotundus, 146 

 Saccus vasculosus, 43, 75 

 Sacrum, 92, 106, 12 r 307 

 Salamandra, 95, 334 

 Salivary glands, 93 

 Salpa, placenta of, 425 

 Sauripterus, 315, 428 

 Saurischia, 442 

 Sauropsida, 322, 332, 443 

 Sauropterygia, 440 

 Scaphoid, 93, 301 

 Scapula, 51, 71, 73, 301 

 Scapular girdle, 313 

 Schizoccel, 276 

 Sciatic plexus, 100 

 Sclerocoel, 167 

 Sclerotic, 22, 40, 190 

 Sclerotome, 167, 182, 270, 303 

 Scrotal sac, 134, 143, 150, 358 

 Scy Ilium, head of, 358, 478 

 Sebaceous glands, 134, 257 

 Secondary choana, 145 

 " Secondary " characters, 18 



— feathers, 119 



— gill-slits, 168 

 Secretin, 347 

 Segmental apparatus, 374 

 Selenodont teeth, 268 

 Sella turcica, 152 

 Semicircular canal, 24, 40, 395 



, devpt. of, 192 



Seminal vesicle, 55 

 Septomaxillary, 104, 300 

 Sero-amniotic connexion, 211, 213, 



253 

 Sesamoids, 142, 301 

 Seymouria, 437 

 — , skull of, 286 

 — , vertebras of, 306 

 Shell of egg, 198, 402, 436 

 Shell-membrane, 198, 402 

 Sino-auricular node, 333 

 Sinus terminalis, 206, 231 



— venosus, 30, 58, 333 

 Sirenia, 457 



Skin, 7, 256 



" Skin-brain," 367 



Sloth, 457 



Smooth muscles, 55, 270, 368, 384 



Soft commissure, 154 



Solea, 430 



Solitaire, 450 



Sottas' centre, 467 



Somatic motor component, 365 



Somatic muscles, 26, 55 



— sensory component, 365 



Somatopleur, 2 



Somite, 2, 165, 181, 206, 270 



Specialised characters, 18, 483 



Spermatic cord, 150 



Sperm-sac, 55 



Sphargis, 439 



Sphenodon, 441 



— , gastralia of, 258 



— , heart of, 332 



— , pineal of, 394 



— , skull of, 290 



— , vertebrae of, 306 



Sphenopalatine ganglion, 386 



Sphenotic, 68, 72, 300 



Spinal accessory nerve, 1.13, 308 



Spiracle, 37, 48, 338 



Spiral valve, 30, 53, 83, 345 



Splanchnic nerves, 385 



Splanchnoccel, 2, 31, 53, 166, 181, 



270 

 Splanchnocranium, 28, 49, 279 

 Splanchnopleur, 2 

 , Spleen, 61, 152, 335 

 Splenial, 90, 300 

 Splint-bones, 320 

 Squalus, head of, 358, 478 

 Squamata, 441 

 Squamosal, 90, 291, 300 

 Stapes, 138, 298, 300, 395 

 Stegocephalia, 434 



— skull of, 285 

 Stegosaurus, 442 

 Stellate ganglion, 385 

 Sternebrae, 142, 309 

 Sternum, 92, 301, 309 

 Stomach, 51, 345 

 Stomodaeum, 183, 344 

 Stratum corneum, 133, 256 



— Malpighi, 133, 256 

 Streptostylic skull, 105, 292 

 Striated muscle, 55, 270, 370, 392 



— visceral muscle, 55, 271 , 368 

 Struthiones, 450 



Styloid process, 138 

 Stylo-mastoid foramen, 137 

 Subintestinal vessel, 30, 58 

 Sublingual gland, 145 

 Submaxillary ganglion, 386 



— gland, 145 

 Subopercular, 71, 73, 300 

 Suborbital, 69, 73, 300 

 Sucker of tadpole, 195 

 Sudoriparous glands, 134, 257 

 Sulci, 154 



Superior oblique muscle, 46, 361 



— rectus muscle, 46, 361 



— vena cava, 85, 97, 128, 148 



