INDEX. 



7OI 



Pseudembryo, 157. 



Pseudobranchia, 414. 



Pseudohsemal system, 20(5. 



Pseudo-hearts, 314. 



Pseudonavicellae, 51, 52. 



Pseudopodia, 49, 53, 54, 56, 60, 67, 68. 



Pseudopus, 461. 



Pseudoscorpionidce, 260. 



Paittactdce, 620, 521. 



Psittacus, 521. 



Psolus, 183. 



Psorospermice, 52. 



Ptarmigan, 516. 



Pteraspis, 418, 427, 428. 



Ptenchthys, 409, 417, 418, 423., 



Pteroceras, 339. 



Pterodactyles, 476, 477. 



Pteromys, 622. 



Pteropidw, 626. 



Pteropoda, 320, 329, 383; general char- 

 acters of, 342 ; foot of, ib. ; shell of, -ib. ; 

 divisions of, 343 ; distribution of, iu 

 space, ib. ', in time, 359. 



Pteropus, 626. 



Pterosaur ia, 448 ; general characters of, 

 475 ; distribution of, in time, 476. 



Pterygotus, 241, 253. 



Ptilodictya, 318. 



Ptilograpsus, 121. 



Ptilopora, 318. 



Ptychoceras, 356, 361. 



Pulex, 284. 



Pulicidce, 283." 



Pulmogasteropoda, 3.32. 335, 338. 



Pulmonaria (Arachnida), 258, 261. 



Pulmonifera (Mollusca), 335, 338. 



Pulmotrachearia, 262. 



Puma, 616. 



Pupa, 274, 275. 



Pupa, 337, 341, 359. 



Pupina, 341. 



Pupipara, 2*5. 



Purples, of Wheat, 197. 



Purpura, 339. 



Putorius, 611. 



Pycnogonum, 25S, 259. 



Pygidium, 238, 239. 



Pyramidella, 339. 



Pyramidellidce, 335, 339. 



Pyrgita, 525. 



Pyrosonidce, 311. 



Pyrrhula, 525. 



Pyrula, 339. 



Python, 446, 458. 



QUADRATE Bone, 376, 384. 

 Quadrumana, 541, 542, 544, 551, 554; 



characters of, 629 ; sections of, 630 ; 



distribution of, in time, 648. 

 Quagga, 585. 



RABBIT, 619. 



Racoon, 609. 



Radiata, 85. 



Radiolaria, 50 ; characters of, 67. 



Kadiolites, 327. 



.Kaia, 423. 



Rallidce, 505. 



JKaHws, 505. 



Ramphorhynchus, 475, 477. 



.Kana, 439, 410, 442. 



Ran idee, 440, 442. 



Raptores. 501; characters of, 528; sec- 

 tions of, 16. 



.Kasores, 492, 498. 501 ; . characters of, 

 514 ; sections of, 515. 



Rastrites, 121. 



Rat, 620. 



Ratel, 610. 



Ratitce, 499. 



Rays, 418, 419, 423, 430. 



Receptaculites, 66. 



Red Coral, 130, 140. 



Regnum Protisticum, 8. 



Rein-deer, 592, 594. 



Reproduction, general phenomena of, 25, 

 et seq. ; sexual, 25 ; non-sexual, 26, et 

 seq. 



Reptilia, 383, 384 ; general characters of, 

 444 ; jaw of, 445 ; teeth of. 446 ; circula- 

 tion of, 447 ; respiration of, 448 ; orders 

 of, ib. et seq. 



Respiratory tree, of Holothurians, 179. 



Respiratory tubes, of Rotifera, 200. 



Reticulosa (see Foraminifera), 60, 62. 



Retiolites, 121. 



Reversed shells, 297. 



Rhabdaecela, 192 



Rhabdoidea, 63. 



Rhabdopleura, 303, 305. 



Rhabdopleurea, 30(5. 



Rliamphastidoe, 520, 526. 



Rhea, 513. 



Rhinobatis, 423. 



Rhinoceridce, 582, 6 15. 



Rhinoceros, 582, 5S3, 645. 



Rhinolophtdw, 625. 



Rhinolophug, 625. 



Rhizocephala, 225 ; characters of, 228. 



Rhizocrinus, 171, 174, 180. 



Rhizophysiadije, 110. 



Rhizopoda, 50 ; characters of, 53 ; pseudo- 

 podia of, ib. ; divisions of, ib. 



Rhizostoma, 119, 120. 



Rhizostomidce, 114; definition of, 116; 

 development of, 116, 117 ; structure of 

 reproductive zooids of, 119. 



Rhynchoceti, 579. 



Rhynchonella, 317, 319. 



Rhynchonellida;, 3 1 5, 316. 



Rhynchosaurus, 467, 475. 



Rhynchota (see Hemiptera'). 



Rhytina, 545, 570, 571, 572. 



Rhyzophaga, 559. 



Ribbon-worms, 192. 



Rissoa, 340. 



Rodentia, 541, 550, 553 ; general char- 

 acters of, 617 ; families of, 618, et seq. ; 

 distribution of, in time, 648, 



Rorqual. 576. 



Rot, of Sheep, 190. 



Rotalina, 62. 



Rotatoria, 198 (see Rotifera). 



Rotifera, 6, 183 ; characters of, 198 ; wheel- 

 organ of, ib. ; water-vascular system of, 

 200 ; masticatory organs of, ib. ; affini- 

 ties of, 202 ; vitality of, 6 ; distinctions 

 from Infusoria, 202. 



Round-worms, 195. 



Rugosa, 127 ; characters of, 140 : dis- 

 tribution of, in time, 151 ; families of 

 153. 



Ruminantia, 541, 544 ; characters of, 

 588 ; dentition of, 590 ; stomach of, 588, 



