854 



Subject Index 



Rib(s) — (Continued) 



ventral, 113, 114 



vertebral, 584 

 Right whale, 7G5, 766 

 Robins, 553 



Rodent(ia), 46, 47, 571, 739, 740, 776 

 Rods (of retina), 203, 204, 205, 206 



of Corti, 690 

 Rollers, 551 

 Root (of tooth), 35, 36 



canal, 37 



dorsal spinal, 169, 170, 171, 172, 272 



ganglion, dorsal, 179 



of hair, 155 



ventral spinal, 169, 170, 171, 172, 272 

 Rorqual whale, 765 

 Rotators, 96 

 Rubrospinal tract, 170 

 Rufous tinamou, 547 

 Rugae, 28, 29 



Ruminant (ia), 755, 756, 757 

 Running birds, 542 



S 



Sac(s), air-, 519, 520, 521, 522, 523-525, 621 



conjunctival, 203, 686 



endolymphatic, 688 



lung-, 60, 437 



olfactory, 144 



otic, 144, 207-210, 689 



yolk-, 241, 242, 289, 293-295 

 Sacculo-utricular canal, 211 

 Sacculus, 208, 209, 211, 477 



region of, 689 

 Sacral curvature, 4, 109 



nerves, 177 



plexus, 172 



vertebrae, 4, 109, 133, 138, 447, 468, 

 515, 596 

 Sacrum, 596, 597, 598 

 Sagittal plane, 12 



Salamander (s), 33, 56, 60, 114, 134, 156, 

 172, 193, 234, 236, 240, 245, 452, 

 453, 454 



lungless, 447 

 Salientia, 454-458 

 Saliva, 637 

 Salivary glands, 176, 183, 185, 636, 637, 



638 

 Salmo fario, 20 

 Salmon, 240, 244 

 Saltatious evolution, 342 

 Sandpipers, 546, 550 

 Santorini, duct of, 32 

 Sarcolemma, 314 

 Sarcophilus, 774 

 Sarcoplasm, 312 

 Sartorius muscles, 92 

 Sauria, 484 

 Sauripterus, 130 



Sauropsida, 256, 287, 410, 463-558, 629 

 Sauropsidan reproduction, 787 

 Scala tympani, 693 

 vestibuli, 693, 696 



Scalenus muscles, 592 

 Scales, 308, 373, 382, 464 

 bony, 19, 20 

 ctenoid, 20 

 cycloid, 20 

 fish, 50, 51, 424 

 ganoid, 20, 424 

 horny, 19, 20, 573 

 placoid, 50, 51, 424 

 Scapula (shoulder-blade), 95, 99, 107, 120, 



130, 131, 132, 511, 583 

 Scapular process, 129 

 Scent-glands, 577, 665 



anal, 665 

 Schwann's sheath, 140, 319 (see also 



Neurilemma) 

 Science, 5, 384 

 Sciurus, 740 

 Sclera (sclerotic layer), 117, 201, 202, 203. 



533, 681 

 Sclerotic plates, 476, 533 

 Sclerotome, 110, 275, 278, 283 

 Scrotal fold, 659 



Scrotum, 68, 633, 651, 652, 653, 655. 6C0 

 Scup, 55 

 Sea cows, 367, 368, 763 



horse(s), 55, 238, 239, 245, 435 

 lion(s), 367, 368, 747, 749 

 squirts, 394, 396 

 urchin, 228 

 Seal(s), 367, 368 

 eared, 747 

 earless, 750 

 fur, 747 

 harbor, 750 

 Sebaceous glands, 574 

 Secodont, 53 

 Secretin, 215 

 Secretion(s), 155. 156, 174, 215-219, 221, 



222, 226, 227 

 Secretory cells, 179, 1S5 



glands, 310 

 Segmentation, 260, 202, 271, 277, 278 

 Selection, natural, 345, 366 

 Selenodont(ia), 755-757 

 Semicircular canals, 208, 209, 211, 688 



functioning of, 698, 699 

 Semilunar (Gasserian) ganglion, 160, 161, 

 164, 178 

 membrane, 527 

 valves, 65, 621 

 Semimembranosus muscles, 92 

 Seminal groove, 659 



vesicles, 663 

 Seminiferous tubules, 283 

 Semitendinosus muscles, 92 

 Sense bud, 194 



(sensory) cells, 140, 142, 192, 193, 195, 

 196, 197, 198, 199, 209, 210, 214, 

 309, 690 

 Sense-organs, 119-213, 419, 420, 451, 474- 



478, 532-534, 581, 668-701 

 Senses, chemical information from, 673 

 Sensory, 141 



bristle, 196, 197 



