544 



INDEX. 



Hypoplastron, turtle 217 



Hyporachis 328 



Hypsilophodon 39 ; predentary bone 

 284 



Hypsodont, defined 345, 429 



Hypural bone, cod 85 



Hyracidae 47 



Hyracoidea 47 ; femur 519 ; general 

 characters 362 ; manus 510 ; nails 

 418 ; skull 472 ; teeth 432 



Hyracotherium 46; manus 508; 

 scapula 496 



Hyrax 47, 363; see Procavia 



Hystricidae 47 



Hystricomorpha 47; auditory os- 

 sicles 488 



Hystrix, 47 '; auditory ossicles 488; 

 see Porcupine 



Ichthyodorulites 106 



Ichthyoidea 35 ; general characters 



134 

 Ichthyopsida3jf ; general characters 



59 



Ichthyopterygium 130 

 Ichthyornis 40 ; mandible 335 ; 



pelvis 341 ; teeth 330 ; vertebrae 



332 



Ichthyornithiformes 40, 300 

 Ichthyosauria 37; general charac- 

 ters 195 ; ribs 285 

 Ichthyosauridae 37 

 Ichthyosaurus 37,197; limbs 290; 



palatines 281 ; pectoral girdle 



288 ; position of limbs 28 ; skull 



196 ; teeth 273 ; vertebral column 



275 

 Ichthyotomi 31 ; general characters 



62; fins 1 30 f.; tail 116 

 Iguana 38 ; teeth 273 

 Iguanidae 38; zygosphenes 200, 



276 

 Iguanodon 39, 208 f.; jaws 292; 



predeutary 284 ; sternum 288 ; 



teeth 272 f. ; vertebrae 275 

 Iguanodontidae 39 

 Iliac surface of ilium, dog 410 

 Ilium 25 ; crocodile 266 ; dog 409 ; 



duck 325; frog 165; mammals 



513 f. ; newt 149 ; reptiles 291 ; 



turtle 235 

 Incisors, dog 376 f. ; mammals 



344 



Incus, dog 393; man, dog and 

 rabbit 485 



Infra-marginal shield, turtle 215 



Infra-pharyngeal bone, cod 101 



Inia 45 ; cervical vertebrae 444 ; 

 lumbar vertebrae 448 



Innominate bone, dog 409 ; mam- 

 mals 513 



Insectivora 48 ; arm bones 503 ; 

 auditory ossicles 488 ; cervical 

 vertebrae 446 ; general characters 

 369 f. ; manus 512 ; pelvis 515; 

 pes 527 ; sacrum 452 ; shoulder- 

 girdle 499; skull 480; sternum 

 490; tail 454; teeth 440; thigh 

 and shin 520 ; thoraco-lumbar 

 vertebrae 450 



Insectivora vera 49; general cha- 

 racters 370 



Intercentra 15 ; Galeopithecus 370 ; 

 Ichthyosauria 195; Labyrintho- 

 dontia 172 ; Sphenodon 198 ; 

 Talpa 450 



Interclavicle 25 ; crocodile 263 ; 

 Monotremata 494 ; reptiles 289 



Intercondylar notch, dog 412 



Intergular shield, turtle 215 



Interhyal, cod 100 



Intermedium 27; see Carpus and 

 Tarsus 



Intermuscular bones, cod 86 



Internasal septum, dogfish 76 



Interorbital septum, birds 333 ; 

 crocodile 247 ; duck 317 ; reptiles 

 277 



Interspinous bones, cod 86 



Intertarsal ankle joint 190 



Intervertebral discs 15, 378 



Ischial tuberosity, dog 411 



Ischium 25 ; crocodile 266 ; dog 

 410 ; duck 325 ; frog 165 ; newt 

 149 ; turtle 235 



Ischyodus 32, 66 



Ivory 5 



Jacana 42 ; see Parra 

 Jacare 39; scutes 271 

 Jaws 21 ; cod 98 f. ; crocodile 252 f. ; 



dog 395f . ; dogfish 77 ; duck 317 f .; 



frog 158 f. ; newt 143 f. ; salmon 



93 f . ; turtle 229 f. 

 Jerboa 47; cervical vertebrae 446; 



pes 526 



