662 



INDEX 



Omosternum of Auura, 25 ; taxonomic 



value, 141 



OnycJwdactylns, 96 ; 0. japonicus, 109 

 Operculum of gills, 44 

 Ophiderpeton, 81 

 Ophidia, 491, 581 f. 

 Ophiop/K.iifn*. <!- 

 Ophiops, 551 

 Ophioxylon (plant), 629 

 Ophisaurus, 538 ; 0. opus, 538 ; 0. 

 . gracilis, 538 



Ophthalmosaurus, limbs, 481, 481, 484 

 Opisthocoelous, definition, 12 

 Opisthoglossa, 140 

 Opisthoglypha, 592, 606 f., 623 f. 

 Oppel, on classification, 7 

 Oreobatrachus, 241 

 Oreophrynella, 221 

 Ornitlwcheirus, 486 

 Ornithomimus, 417 ; 0. grandis, 429 

 Ornithopoda, 425, 416 

 Ornithopsis, 419 

 Ornithoscelida, 416 

 Ornithosuchus, 433 

 Orthocosta, 288, 289 

 Orthopoda, 4&4 

 Ossifications, dermal, in An lira, 31, 34 179, 



190, 210, 211 

 Osteoderms = ossifications in the skin, of 



Sphtirgis, 337 ; of Caiman, 337 ; of 



Lizards, 504, 513, 514 

 Osteolaemus, 450 ; 0. tetraspis, 466 

 Ouaran, 543 



Oudenodon, 301 ; 0. ruyosus, 310 

 Ovary, 49 

 Oviduct, 49, 51 



Owen, on fossil Reptiles, 303 n. 

 Oxydactyla, 140 

 Oxyglossus, 239, 241 



Pachytriton, 96, 115 ; P. brevipes, 133 



Painted Terrapin, 347, 348 ; rate of 

 growth, 349 



Palaeobatrachns, vertebral column, 22, 

 145 



Palaeohatteria longicaudata, 291 ; skull, 

 280, 304 



Pahulicola, resembles Enyystomops, 166, 

 212,220; P.fuscomacnlata,220; P.bili- 

 gonigera, 221 



Paludina, as food of Trionyx, 407 



Parasternum = the sum total of the Abdo- 

 minal ribs, q.v. ; of Sphenodon, 298 ; of 

 Crocodilia, 440 ; of Ichthyosanria, 480 



Parasuchia, 433 



Pareiasauri, 301, 302, 304 



Pareiasaurus baini, 304 



Parrots, feathers dyed with poison of I)en- 

 drobates, 272 



Pelobates, variation of vertebrae, 19 ; 

 sacral vertebra, 22, 161 f. : P. fiiscus, 



164 



Pelobatidae, 139, 160 f. ; distribution, 161 



Pelodytes, 161, 165 ; P. punctatua, 165 ; 

 P. caucasicus, 166 



Pdomedusa yaleata, 391 



Pelomedusidae, 313, 314; distribution, 

 332, 390 f. 



Pelosaurus, 81 



Pelvic, plexus of Anura, 39 



Pelvis, of Urodela, 15 ; of Anura, 22, 27 ; 

 of JSryops, 286 ; of Microsauri, 289 ; of 

 Sphenodon, 298 ; of Theromorpha, 302 ; 

 of Pareiasauri, 305 ; of Qynognafhus, 

 307 ; of Dicynodon, 310 ; of Chelonia, 



319, 319, 320 ; of Pleurodira, 388, 389 ; 

 of Dinosauria, 414 ; of Eusuchia, 441 ; 

 of Plesiosauria, 476 ; of Ichthyosauria, 

 480 ; of Pterosauria, 485 ; of Pythono- 

 morpha, 489 ; of Lacertilia, 496 



Perennibranchiata, 8, 9 ; not a natural 

 group, 65 



Petrels living with Sphenodon, 299 



Petrobates, 288, 289 



Phalanges, number of, in Urodela, 15 ; in 

 Anura, 26, 27, 238 ; in Stegocephali, 

 79 ; in Palaeohatteria, 291 ; in Chelonia, 



320, 321 ; in Chdone, 379 ; in Scelido- 

 sn iii-us, 425 ; in Camptosaurus, 427 ; 

 in Laosaurus, 427 ; in Iguanodon, 428 ; 

 in Eusuchia, 441 ; in Plesiosauria 475 ; 

 in Lariosaurus, 477 ; in Ichthyosauria, 

 481, 481 ; in Pterosauria, 485, 485 : 

 shape in Anura, 138 ; peculiar in Pipa, 

 151 



Phaneroglossa, 152 



Phaneroglosses, 139 



Pluinerotis, 213 



Phisalix, on poison of Amphibia, 37 



Pholidosaurus, 451 



Phractamphibia, 78 f. 



Phrynaglosses, 139 



Pkryndla, 227 ; Ph. pollicaris, 233 



Phryniscus, 226, 237, 230 ; Ph. nigricans, 



230 



Phrynobatrachus, 241 

 Phrynocara, 235, 8S6 

 Phrynocephalus, 521 ; deserticolous, 493 ; 



coloration, 494; Ph. heUoscnpim. '.'.': 



Ph. interscapularis,522; Ph. myst</i','n*. 



522 



Phrynoderma, 241 

 Phrynomantis, 226, 228 

 Phrynopsis, 241 

 Phrynosoma, 305, 533; Ph. cort'iii/fum, 



534, 535 ; Ph. cornutum, 533, 534 

 Phyllobates, 24.' : Ph. blfolor, 242; Ph. 



trinitatis, 242 



Phyllodactylus, 507 ; Ph. europaeus, 507 

 Phyttodrmnus, 238, 242 

 Phytlomedusa, 189, 203 f. ; Ph. bicolor, 



203 ; Ph. dacnicolor, 203; Ph. hypochon- 



