INDEX 



565 



ossicula auditus, 159 



ostium tubae, 382 



ostrich, 165, 172, 433 



otic capsules, 145 



otic vesicle, 473, 486 



otter, 505 



ova, 366, 379, 382, 389 



ovaries, 49, 367, 379, 383, 387, 389, 



39i, 393, 394 

 oviduct, 382, 383, 385, 387, 388, 389, 



39i, 394 



ovum, 48, 49, 50, 51, 55, 58 

 Owen Sir Richard, his theories, 



507-512 

 owl, 489 

 ox, 182, 491 



Pacini's corpuscles, 474 



pads, mammalian, 90, 91 



Palaeostoma, 154, 424, 478 



palatine cleft, 271 



palingenetic characters, 16 



pallium, 416 



palm print of boy, 94 



pancreas, 266,^294 



Pantotheria, 35, 44 



papilla acustica basilaris, 490, 491 



papilla acustica legenae, 490 



parachordal elements, 144, 145 



parachordal region of head, 124, 



144, 46o 

 paracone, 278 

 paradidymis, 392 

 Paramoecium, 4, 6 

 paraphysis, 420, 422 

 parapophyses, 508 

 pars olfactoria, of nose, 478 

 paraseptal cartilage, 483 

 parasternum, 141 

 pars respiratoria, of nose, 478 

 parathyreoid bodies, 289 

 paired fins, 163. 164 

 parietal foramen, 420 

 parietal eye, 422 

 parietal mesoderm, 63, 66 

 parietal muscles, 190, 192 

 parietal organ, 420 

 paroophoron, 391, 394 

 parotid glands, 286 

 parrots, 296 

 patagium, 249 



patella, 178 



paunch, 292 



pearl organs, 472 



pectoral fins, 164 



pectoral girdle, 130 



pedunculi cerebri, 426 



pelvic girdle, 169-172; phylogenesis 



of, 170-172 



pelvis, of kidney, 376 

 penis, 398, 399, 400, 401 

 penis, position of, 399, 400 

 perennibranchiate amphibians, 307, 



330 



perilymph, 492 

 perilymphatic cavity, 492-493 

 perilymphatic space, 357 

 perinaeum, 389, 401 

 perineurium, 434 

 Perissodactyla, 39 

 peristalsis, 265 



peritoneal cavity, 367-369, 380 

 peritoneal cavity, lesser, 294 

 peritoneum, 66, 261, 293, 294, 316, 



367, 374 



perivisceral fluid, 317 

 perspiration, 112 

 pes hippocampi, 417 

 petrel, 478 



Petromyzon, 289, 420, 477, 488 

 Peyer's patches, 362 

 phallus, 398 

 pharyngeal pockets, 268 

 pharyngeal pouches, 265, 266 

 pharyngo-oesophageal respiration, 



308, 309 



pharynx, 265, 266 

 Phascoloarctus, 297 

 philthrum, 271 

 phylogenesis, 15 

 phylogenesis, laws of, 16-20 

 phylogenesis of man, 44, 45 

 phylogenetic tree, of mammals, 36, 



39; of vertebrates, 28 

 pig, 182, 274, 361, 391, 437, 489 

 pigment, 78, 118-121 

 pigment speck, of Amphioxus, 445 

 pineal gland, 421 

 pineal organ, 420 

 pinna, of ear, 161, 496, 497 

 Pinnipedia, 38 

 Pisces, 29, 30 

 Pithecanthropus, 43 



