662 



INDEX 



OmBsaurus= Stegosaurus, 4^5 

 Omosternum of Anura, 25 ; taxonomic 



value, 141 

 Onychodactylus, 96 ; 0. japonicus, 109 

 Operculum of gills, 44 

 Ophiderpeton, 81 

 Ophidia, 491, 6S1 f. 

 Ophiophagns, GSZ 

 OphiopSj 551 

 Ophioxylon (plant), 629 

 Ophisaums, 538 ; 0. apus, 533 ; 0. 



gracilis, 538 

 Ophthalmosaurus, limbs, 481, 481, 484 

 Opisthocoelous, definition, 12 

 Opisthoglossa, 140 

 Opisthoglyplia, 593, 606 f., 623 f. 

 Oppel, on classification, 7 

 Oreobatrachus, 241 

 Oreophryuella, 227 

 Ornithoclieirus, 4^6 

 Oniithomimus, 417 ; 0. grandis, 4^9 

 Ornitliopoda, 425, 4''^ 

 Ornitliojysis, 419 

 Ornitlioscelida, 416 

 Ornithosuchus, 4-^3 

 Orthocosta, 288, 2S9 

 Orthopoda, 4'^4 

 Ossifications, dermal, in Anura, 31, 34 179, 



190, 210, 211 

 Osteoderms = ossifications in the skin, of 



Spharijis, 337 ; of Caiman, 337 ; of 



Lizards, 504, 513, 514 

 Osteolaemus, 450 ; 0. tetraspis, 466 

 Ouaran, 54^ 



Oiidenodon, 301 ; 0. rtigosus, 310 

 Ovary, 49 

 Oviduct, 49, 51 



Owen, on fossil Reptiles, 303 n. 

 Oxydaotyla, 140 

 Oxyglossus, 239, 241 



Pachylriton, 96, 115 ; P. h,rn'j,es, 132 



Painted Terrapin, 347, 348 ; rate of 

 growth, 349 



Palaeobatraclms, vertebral column, 22, 

 145 



Paliieohatteria longieaudata, 291 ; skull, 

 280, 304 



Pidudi&ila, resembles Engystmnojjs, 166, 

 212, 230; P. fitscomaculaia, 220 ; P. bili- 

 gonigera, 221 



Pahidina, as food of Trionyx, 407 



Parasternum = the sum total of the Abdo- 

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

 Crocodilia, 440 ; of Ichthyosauria, 480 



Parasuchia, 433 



Pareiasauri, 301, 302, 304 



Piireiasaurns bai)ii, 304 



Parrots, feathers dyed with poison of Den- 

 drdbates, 272 



Pelohates, variation of vertebrae, 19 ; 

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



163; P. cuUripes,16S,Wi ; P. syriacus, 

 164 



Pelobatidae, 139, 160 f. ; distribution, 161 



Pelodytes, 161, 165 ; P. punctatus, 165 ; 

 P. caucasicus, 166 



Pelomedusa galeata, 391 



Pelomedusidae, 313, 314; distribution, 

 332, 390 f. 



Pdosaurus, 81 



Pelvic, plexus of Anura, 39 



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

 of Eryops, 286 ; of Microsauri, 289 ; of 

 Sph^nodan, 298 ; of Tlieromorpha, 302 

 of Pareiasauri, 305 ; of Cynognatlms, 

 307 ; of Dieyuodoii, 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 

 raorpha, 489 ; of Lacertilia, 496 



Perennibrauchiata, 8, 9 ; not a natural 

 group, 65 



Petrels living witli Sphenodon, 299 



Petrobates, 288, JS9 



Phalanges, number of, in Urodela, 1 5 ; in 

 Anura, 26, 27, 238 ; in Stegocephali, 

 79 ; in Palacohattei'ia, 291 ; in Chelonia, 



320, 321 ; in Chelone, 379 ; in Scdido- 

 saurus, 425 ; in Cainptosaurus, 427 ; 

 in Laosaurus, 427 ; in Igicanodon, 428 ; 

 in Eusuchia, 441 ; in Plesiosauria 475 ; 

 in Lariosat'Tus, 477 ; in Ichthyosauria, 

 481, 481 ; in Pterosauria, 485, 485 ; 

 shape in Anura, 138 ; peculiar in PijM, 

 151 



Phaneroglossa, 153 



Phaneroglosses, 139 



Phanerotis, 313 



Phisalix, on poison of Amphibia, 37 



Pholidosaurus, 451 



Phractaniphibia, 78 f. 



Phrynaglosses, 139 



Phrynella, 327 ; Ph. iioUicaris, 233 



Phryniscus, 226, 237, ~30 ; Ph. nigricans, 



230 

 Phrynobatrachv s, 2 If 1 

 Phrynocara, 235, ^36 

 Phrynocephalus, '521 ; deserticolous, 493 ; 



coloration, 494; Ph. hclioscopus, 523; 



Ph, interscap'idaris,532 : Ph. iiiysfaceus, 



533 

 Phryiwderjiio, 34I 

 PhnjmiNiinti.i. 226, 228 

 Phrynnjisis, 241 

 PhrynuSditia, 305, 533; Ph. coronatum, 



534, 535 ; I'h. cornutum, 533, 534 

 Phythjhatrs. 342 ; Ph. bicolor, 243; Ph. 



trinitatis, 343 

 PhyUodactyhis, 507 ; Ph. europaeus, 507 

 nyllodromus, 238, 343 

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



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



