596 



INDKX. 



74. 

 '6,291. 

 97. 100 



, 498, 499. 



Old Red Sandstone. 620, 621. 



N . /'. U r. U - 

 OUnut, 107, 108. 

 OliffocluHa, 136. 

 Ottro. 248, 249. 

 . 249. 



OrxAui, 335, 337. 

 Oni'jrtM, 181, 170. 



Oolitic period, rocks of, 635; life of, 537; 

 flow of. 497. 



<> . . \-: . .1 



owrnilum. of Cirripedes, 150; of Euryp- 

 terids, 173; of Limnlus, 174; of Gas- 

 teropoda, 241; of Maclurea, 2(33: of 

 TA^a. 270. 



Ophuirrjxlon, 852. 



<>l>l,i,a. characters of, 360; distribution 

 of, in time, 860. 



Ophileta, 260, 804. 



Ophiofoma. 117. 



Ophioderma, 117. 



OpUobpU, 117. 



npliiimuirplia, 347. 



0/>Aiura. 116. 



(jjihiuroidra, rliaractere of, 115; distribu- 

 tion of, in time. 117. 



Opitthobranchiata, 245. 



Oputhoccelui (Crvcodilia), 366, 36S. 



Opossum, 411. 



Oracanthut, 838. 



Orbitoidft, 62. 



Orbitoliies, 62, 72. 



Or'.nt,,,.,, 61. 



Orrhritia, 176. 



OretuUr, 114, 115. 



or^.u.i. IM^H, succesaion of, 52-54. 



Oriskany Sumlstonc, 622. 



Ortnojri//on, 474, 482. 



Onnthnrtniiichii*. 40C, 407. 



OmttJttMMtdO, 377, 3SO. 



Ornithntattria, 875. 



OrtAw. 208, 209. 

 Orthirina, 208, 209. 

 OrfA.wm, S76. 283, 284, 634. 

 OrtAflerra/wJn-, 27, 283. 

 Ortkonata. 225, 220. 

 Or1lu,j>tfra, 185, 186. 187. 

 Orion*. .',18. 

 Osborne aerie*, 649. 



OWraoodo.charmcter* of. 156; distribution 

 of. In time, 156, 157, 638. 



SSXS 





Ovarian capsules of Graptolltes, 81. 



Ovarian pyramid of Cystideans, 181. 



Ovibot, 440. 



Ovicell, 193. 



0*UA. 487, 4S9, 441. 



On*, 439. 



Oxford Clay, 636. 



Oxyrhina, 340, 341. 



Pachydtrmata, 423. 



Pachypteris, 498. 



J>ach;/ri*ina, 234, 236. 



Pachyseris, 96. 



J'aehiitheca, 474, 480. 



Padillcllsh, 333. 



Paffuridce, 180. 



Patiunm, 180. 



Paicearea. 22S. 



Palanster, 111, 114, 115. 



Pala-chinwt, 108, 110. 



I'alvga, 177. 



Palaichthyes, 845. 



Palteinachus, 180. 



Palaoehorda, 142. 



Palceocoma, 114, 115. 



Palatocoritne, 75. 



PaUtocrinnidx, 123, 126. 



Paltfoeyehu, 97. 



PaUroci/on, 454. 



Paiaoditew, 114, 115. 



Paleolithic Man, 468. 



Palceomarwn, 68. 



Palaonucus, 323, 530, 534. 



Paheonyctis, 452. 



Palivontological Record, imperfection of, 



27-39. 



Paleontology, definition of, 1. 

 Paltrophis, 361. 

 Palceophycus, 477, 479. 

 PaUeopteris, 4S5. 

 Paleeopyge, 167. 



Palamsiren, 347. 

 Paltfospalax, 468. 

 Pala-osponffia, 68. 

 Palaeothertdce, 427. 

 Palceotheriwn, 427. 

 Palcentringa, 390, 392. 

 Paltruxjilon, 493. 

 J'alaptcriix, 30, 394. 

 ]"ata*teri'na. 114, 115. 

 Pali (Corals), 92. 

 Palinurus, 179. 



Pallial line, of Bivalve shells, 216. 

 Pallial sinus, 217. 

 Palmacites, 494. 

 Pahidicellea. 194. 

 J'altuHna, 245, 255. 

 I'almtinida, 255. 

 Pandanea, 499. 



* 



Paper Nautilus, 204. 

 Paradvxidas, 168 

 j;ir,t,l..jri,l?. 167, 168, 169. 

 J'aramtiricfa, 99. 



, 



Parktria, 66. 

 Panxfrcs. 895. 

 /*f#/fa, 242. 259. 

 Patellid^, 259. 



