INDEX 



573 



Olfactory capsules, 78 



lobes, 200 



organ, 258 



scrolls, 267 



tract and bulb, 210 

 Omontum, folds of, 389 

 Omostemum, 70 

 Ontogeny, 1 

 Oosperm, 4 

 Opercular bones, 90 

 Operculum, 88, 356 

 Opisthoccelous vertebra?, 52 

 Optic capsules, 77 



lobes, 200 



thalami, 201 



vesicles, 201 

 Oral cavity, 310, 312 

 Orbital ring, 94, 103 

 Organ of Corti, 301 

 Organs, 2 

 Organ-systems, 2 

 Oro-nasal groove, 261 

 Os clitoridis, 492 



cloaca?, 150 



penis, 492 



uteri, 477 



Ossification, centres of, 80 

 Osteocranium, 79 

 Otic bones, 133, 295, 303 

 Otoliths, 292 

 Ovarian follicle, 4.~>() 

 Ovary, 450 

 Oviducal gland, 463 

 Oviduct, 446 

 Ovipositor, 465 

 Ovotestis, 472 

 Ovum, 2 



Pacinian corpuscles, 257 

 Pala?ocranium, 85 

 Paleontology, 1 

 Pal;eostoma, 203 

 Palate, 112, 118, 122, 132, 310 

 Palatopterygoid, 81 

 Palatoquadrate, 81 

 Palingenetic, 1 

 Pallium, 200 

 Palpebra;, 277 

 Pancreas, 6, 348 

 Panniculus adiposus, 33 



carnosus, 178 

 Papilla foliata, 255 

 Papillary muscles, 411 

 Parachordal cartilages, 76 

 Paradidymis, 445 

 Paraphysis, 200 

 Parapineal organ, 208 

 Parasternal elements, 42 

 Parathyroids, 333 

 Parietal foramen, 103, 112, 114,116 



organ, 202, 221 

 Paroophoron, 445 

 Parorchis, 445, 454 



LIBRAE 



Parotoids, 21 

 Parovarium, 445, 480 

 Pars acetabularis, 151 



basilaris, 298 

 Patella, 172 



Pearl- organs of Cyprinoids, 252 

 Pecten, 282 

 Pectineal process, 152 

 Pectoral arch, 140 

 Pelvic arch, 145 



plates, 145 

 Pelvis of kidney, 461 

 Penis, 487-491 

 Penna, 27 



Pentadactyle limb, 159 

 Pericardium, 388, 394 

 Perichomkal bone, 45 

 Perichondrium, 41 

 Peridural space, 196 

 Perilymph, 291 

 Perimeningeal space and tissue, 195 

 Perina?um, 462, 480 

 Periorbita, 276 

 Perissodactyle foot, 171 

 Peristalsis, '308 

 Peritoneal canals, of Reptiles, 392 



funnels, 466 

 Peritoneum, 308 

 Pes, 160 

 Pessulus, 371 

 Peyer's patches, 308, 345 

 Phagocytes, 394, 435 

 Phalanges, 160 



Pharyngeal teeth of Teleosts, 83, 95, 315 

 Pharynx, 310 

 Phosphorescent organs 19 

 Phylogeny, 1 

 Physiology, 2 

 Physoclisti, 14, 361 

 Physostomi, 14, 361 

 Pia mater, 196 

 Pigment of skin, 17, 20 

 Pineal organ, 103, 201, 208, 228 

 Pinna, 295, 305 

 Pisiform, 163 

 Pituitary body, 6, 202 



sac, 261 



space, 77 

 Placenta, allantoic, 11, 438-440 



umbilical, 436-438 

 Placodes, 236 

 Placoid organs, 39 

 Plantigrade, 171 

 Plastron, 43 



Platybasic type of skull, 77 

 Pleura, 389 

 Pleurocentra, 57 

 Pleurodont dentition, 316 

 Pleuronectida?, asymmetry of head, 94, 



281 



Plexus (or tela?) choroidei, 197, 205 

 Plica circulares, 346 



fimbriata, 331 



semilunaris, 288, 346 

 Pluma, 26 



