398 INDEX. 
Rostral bone, 88 Septum pellucidum, 151 
cartilage, 76, 85 transversum, 123, 271 
Rostrum sphenoidale, 96 Serosa, 350 
Rotator muscles, 132 Serous coat of digestive tract, 207 
Rumen, 227 Serratus anterior muscle, 132 
Sertoli’s cells, 321 
Sacculo-ventricular canal, 184 Serum, 265 
Sacculus endolymphaticus, 183 Sesamoid bones, 129 
of ear, 184 Sheath of Schwann, 20 
Saccus vasculosus, 148 Shoulder girdle, 105 © 
Sacral artery, 286 Sex, determination of, 347 
plexus, 163 Sexual cords, 320 
vertebra, 49 organs, 308 
Sacrum, 49 Sight, organs of, 198 
Salivary glands, 220 Sinus, cervical, 244 
Santorini’s duct, 235 frontal, 197 
Sarcolemma, 21 impar, 250 
Saurognathous, 97 maxillary, 197 
Sauropsida, eyes, 204 of Morgagni, 253 
excretory organs, 327 sphenoidal, 197 
foetal envelopes, 348 terminalis, 277 
reproductive organs, 334 urogenitalis, 322 
teeth, 212 venosus, 272 
Savi’s ampullz, 182 Sinusoids, 267 
Scala media, 185 Sixth sense, 182 
Scale of ear, 186 Skeletal labyrinth, 186 
Scalene muscles, 130 Skeleton, 37 
Scales, 26, 39 appendicular, ro2 
ctenoid, 40 axial, 43 
cycloid, 40 dermal, 38 
development of, 39 membranous, 37 
ganoid, 40 visceral, 63 
of mammals, 34 Skin, 25 
placoid, 40 of mammals, 33 
Scaphoid, 117 Skull, 59 
Scapular region, 105 development of, 59 
Schizoceele, 10 table of bones of, 72 
Schizorhinal, 96 Small omentum, 122 
Sciatic artery, 288 Smell, organs of, 189 
vein, 290 Smooth muscles, 20 124 
Sclera, 62, 202 Soft commissure, 146 
Scleroblasts, 39 Solar plexus, 163 
Sclerotic bones, 67, 203 Solenoglypha, 213 
coat, 62 Somatic layer, 10 
Sclerotomes, 14 motor nerves, 165 
Scrotum, 321, 338 nerves, 162 
Secodont, 214 wall, 121 
Seessel’s pocket, 206 Somatopleure, 15, 121 
Segmentation cavity, 8 Spermatic artery, 286 
of egg, 8 Spermatozoon, 8 
Selenodont, 214 Sphenethmoid, 86 
Sella turcica, 61 Sphenoid bone, 68 
Semicircular canals, 184 Sphenoidalia, 67 
Semilunar fold, 203 Sphenoidal fissure, 67 
ganglion, 171 turbinal, roo 
Seminal vesicles, 342 Sphenopalatine ganglion, 165, 171 
Seminiferous tubule, 321 Sphenotic, 67 
Sense hillocks, 167 ganglion, 165 
Sensory epithelium, 17 Sphincter muscles, 129 
nerve root, 162 pupillz, 202 
organs, 177 Spina scapula, 10g 
Septum, interorbital, 61 Spinal artery, 287 
of cerebrum, 148 cord, 138 
