708 



INDEX 



Salpa, 26, 27, 28, 29, 30, 39, 40 



Salpa democratica, 26 



Salpidce, 22 



Sand-grouse, 404 



Sand -martins, 423 



Sand-pride, 120 



SarcopMlus ursinus, 546 



Sarcorhamphus, 617 



Sargus, 227 



Sauropsida, 303*, 323 



Sauropterygia, 326*, 360, 361 



Saw-fish rays, 165 



Saw-fish shark, 165 



Scala tympani, 459 



Scala vestibuli, 459 



Scales, 194 : of Pigeon, 369 



Scaly Ant-eater, 485 See Manidse 



Scapanorhyncus, 182 



Scaphirhynchus, 212, 236 



Scaphognathits, 365 



Scaphoid, 442, 443 See Limb-skeleton 



of Mammalia 

 Scapula, 80, 81*, 8? See Pectoral 



arch : accessory, 417 

 Scapular region, 81* See Pectoral 



arch 



Scheuchzer, 658 

 Schizoccele, 118 



Schizognathous arrangement, 415* 

 Schleiden, 658 



Schneiderian membrane, 106*, 393 

 Schultze, Max, 659 

 Schwann, 658 

 Scincidse See Skinks 

 Sciuridce, 470, 491, 532 

 Sclater, P. L., 667 

 Sclerotic, 73*, 106, 321, 349, 393 

 Sclerotic plates, of Stegocephala, 293 : 



Lizard, 321 : Reptilia, 349 : Pigeon, 



393 



Screamers, 403 



Scroll-valve of Elasmobranchii, 172 

 Scrotal sac of Rabbit, 433, 460 

 Scrotum, 565 

 Scutes, of Teleostomi, 221 : Stego- 



cephali, 289 : Reptilia, 329 : Arma- 

 dillos, 484 

 Scyllium canicula, 140 See Hemi 



scylliurn 



Scymnus, 167, 173 

 Sea-brearn, 215 

 Sea-cows, 467 See Sirenia 

 Sea-horse, 216, 217, 218, 219, 234 

 Sea-snakes, 324, 356 

 Sea-squirts, 14 

 Sea-turtles, 357 

 Seals, 470 



Sebaceous glands, 474, 475, 476 

 Sebastes percoides, 215 

 Secodont, 545* 

 Secondary cranium, 197 



Secretary-bird, 403, 609 



Segfnental duct, 114*, 115 



Segregation, 645* 



Selache, 173, 182 



Selachii, 164* 



Selenodont, 545* 



Sella turcica, 74, 77*, 189 



Semicircular canals, 111*, 112 



Semi-lunar, 442 



Semi-lunar valves, 270, 271 



Semi -plumes, 409* 



Semnopithecus, 590 



Sense -vesicle, 34, 35, 36 



Sensory organs : Amphioxus, 52, 53, 



54 : Craniata, 104See Ear, Eye, 



Lateral line, Olfactory organ 

 Seps, 354 



Septum auricularum, 270*, 296 

 Septum luciclum, 455, 456 

 Serous membrane, of Birds, 427 428 : 



Mammalia, 462 

 Serpentarius, 609 

 Serramis, 233 

 Sesamoid bone, 380* 

 Severino, 648 

 Sexual selection, 636* 

 Shaft of long bone, 82* 

 Shagreen, 166 

 Shags, 403, 409 

 Shank, 67 See Hind-limb 

 Sharks, 165-182 

 Shearwaters, 357, 402 

 Sheep, 468, 487, 523, 553, 579 

 Shell, of Chelonia, 329 : of Pigeon, 396 

 Shell-gland, Dogfish, 159, 160 : Elas- 



mobranchs, 175 



Shell-membrane, 396, 422, 423, 577 

 Shore-fishes, 220 



Shoulder-girdle See Pectoral arch 

 Shrews, 471, 493 

 Siamanga, 610 

 Siebold, von, 661 

 Silurian period, 618 

 Siluroids, 214, 221, 222, 225, 226, 229, 



230, 234, 236 

 Simia, 473, 610 

 Simia satyrus, 539, 540 

 Simiidce, 473*, 494, 495, 535, 536, 537, 



581 



Sinus rhomboidalis, 392, 393 

 Sinus venosus, 88 See Heart 

 Sinuses, 90, 151* 

 Siphons, oral and atrial, of Ascidia, 



15,17 



Siredon, 302 



Siren, 284, 286, 287, 296 

 Siren lacertina, 286 

 Sirenia, 466*, 476, 486, 495, 496, 518, 



519, 550, 558, 563, 579, 586 

 Skates, 165 

 Skeletogenous layer, 70, 71* 



