574 



INDEX 



Pneumatic bones, 386 

 Poison-fangs, 317 

 Poison-organs of Fishes, 19 

 Polar cells, 3 

 Pollex, 169 



Polymastism and polythelism, 37 

 Polyphyodont, 314 

 Pons Varolii, 203, 229 

 Postcentra, 50 

 Precentra, 50 

 Prehallux, 162, 170 

 Prelacteal dentition, 319 

 Prepollex, 170 

 Prepubic process, 146 

 Prepuce, 491 

 Primitive nieninx, 195 



streak, 6 

 Pro-amnion, 437 

 Pro-atlas, 57, 62 

 Processus digitiformis, 336 



falciformis, 279 



vermiformis, 344 

 Procoelous vertebrae, 56 

 Procoracoid, 71, 141 

 Proctodifium, 6, 308 

 Promontory, of sacrum, 62 

 Pronation, 169 

 Pronephric duct, 443 

 Pronephros, 441, 443 

 Pronucleus, male and female, 3 

 Propterygium, 140, 155 

 Proscapula, 142 

 Prostate, 484 

 Prosternum, 44, 72 

 Protocercal tail, 53 

 Protovertebrse, 9 

 Proventriculus, 339 

 Psalterium, 341 

 Pseudobranch, 357 

 Pseudo-electric fishes, 190 



-turbinal, 266 

 Pterygiophores, 136 

 Pterygopodium (see Clasper) 

 Pteryhe, 28 

 Pubis, 148 



Puncta lacrymalia, 289 

 Pupil, 275 



Pygal plates of Reptiles, 43 

 Pygostyle, 60 

 Pylangium, 395 

 Pylori c cteca, 336 



valve, 311 



Q 



Quadrate cartilage, 81 



R 



Rachis, 27 



Radiale, 161 



Radii of fins, 155-159 



Radius, 160 



Rami communicantes, 247 



Receptacula seminis, 474 



Receplaculum chyli, 433 



Rectrices, 27 



Rectum, 311, 336 



Remiges, 27 



Reissner's fibres, 199 



Reproduction of tail in Lizards, 58 



Respiratory organs, 351 



Rete testis, 445 



Retia mirabilia, 361, 406, 431 



Reticulum, 341 



Retina, 273, 284 



Ribs, 12, 63 



abdominal, 42, 43, 67, 70 



caudal, of Hatteria, 67 



cranial, of Dipnoi, 95 



false and true, 67 

 Rolando, fissure of, 228 

 Rostrum, 88 

 Rumen, 341 

 Ruminant stomach, 341 



S 



Sacculi alveolares, 388 



Sacculus, 290 



Saccus vasculosus, 203, 210 



Sacrum, 56, 60, 62 



Sauropsida, 14 



Savi's vesicles, of Torpedo, 253 



Scala media, 304 



tympani, 299 



vestibuli, 98, 299 

 Scales, 18, 20, 22, 23, 25, 31, 39 

 Scapula, 71, 141 

 Scapus, 27 

 Schizocoele, 8 

 Sclerotic, 276 



plates, 282 

 Scrotal sacs, 482 

 Sccodont teeth, 321 

 Segmental duct, 443 

 Segmentation cavity, 4 



nucleus, 3 



of head, 75, 237 



of oosperm, 4 

 Selenodont teeth, 321 

 Semicircular canals, 290 

 Sense-capsules, 76 



Sense-organs of integument, 25, 250-258 

 Sensory organs, 249-307 

 Septum atriorum, 401, 403 



lucidum, 204 



oblique, 384 



traiisversum, 185 



ventricular, 408 

 Serosa, 437 



Sesamoids, 170, 172, 175 

 Sexual reproduction, 3 

 Shell-gland, 463 



