6i8 



INDEX. 



Psammobia, 285. 



Pseudembryo, 138. 



Pseudobranchia, 366. 



Pseudohsemal system, ISO. 



Pseudo-hearts, 273. 



Pseudonavicellse, 45. 



Pseudopodia, 43, 46, 48. 



Pseudoscorpionidce, 227. 



Psittacidce, 457, 



Psolus, 158. 



Psorospermice, 46. 



Ptarmigan, 454. 



Pteraspis, 369, 378. 



Pterichthys, 368, 378. 



Pteroceras, 294. 



Pterodactyles, 419, 420. 



Pteromys, 546. 



Pteropidce, 549. 



Pteropoda, 253, 286; general characters of, 

 297, 298; foot of, 297; shell of, 297; di- 

 visions of, 298; distribution of, in space 

 298 ; in time, 313. 



Pteropus, 549. 



Pterosauria, 397; general characters of, 

 419 ; distribution of, in time, 420. 



Pterygotus, 210, 211. 



Ptilodictija, 276. 



Ptilograpsus, 106. 



Ptilopora, 276. 



Ptychoceras, 310, 315. 



Pulicidce, 246. 



Pulmogasteropoda, 288, 290. 



Pulmonaria (Arachnida), 224, 227. 



Pulmonifera (Mollusca), 290, 293, 296. 



Puma, 541. 



Pupa, 239, 240. 



Pupa, 296, 313. 



Pupina, 297. 



Purples, of Wheat, 172. 



Purpura, 294. 



Pycnogonum, 225. 



Pygidium, 208. 



Pyramidella, 295. 



Pyramidellidce, 292, 295. 



Pyrosomidce, 270. 



Pyrula, 294. 



Python, 402, 406. 



QUADRATE Bone, 330, 402, 404. 



Quadrumana, 475, 476; 478, 484, 488; 

 characters of, 552 ; sections of, 552 ; dis- 

 tribution of, in time, 568. 



Quagga, 515. 



BABBIT, 542, 543. 



Racoon, 535. 



Radiata, 74. 



Radiolaria, 57; characters of, 58. 



Radiolites, 284. 



Raia, 374. 



Rallidce, 448. 



Rallus, 449. 



Ramphorhynchus, 419, 421. 



/tawa, 390. 



Ranidoe, 390. 



Raptores, 443 ; characters of, 464 ; sections 



of, 468. 

 Rasores, 443 ; characters of, 453 ; sections 



of, 453. 



Rastrites, 106. 

 Rat, 545. 

 Ratel, 536. 



Ratitce, 442. 



Rays, 370, 373, 374, 380. 



Red Coral, 122, 129. 



Regnum Protisticum, 7. 



Rein-deer, 522, 523, 565. 



Reproduction, general phenomenaof,23-33; 

 sexual, 23; non-sexual, 24-33. 



Reptilia, 337, 393 ; general characters of, 

 393-397; jaw of, 394; teeth of, 395; cir- 

 culation of, 396; respiration of, 397; 

 orders of, 397. 



Respiratory tree, of Holothurians, 154. 



Respiratory tubes, of Rotifera, 174. 



Reticulosa, 51, 53 (see Foratrtmifera). 



Retiolites, 106. 



Reversed shells, 257. 



Rhabdoccela, 167. 



Rhabdoidea, 54. 



Rhabdopleura, 106, 263. 



Rhamphastidce, 457, 458. 



Rhea, 452. 



Rhinoceridce, 513, 565. 



Rhinoceros, 512, 513, 514, 565. 



Rhino tophidce, 548. 



Rhinolophus, 549. 



Rhizocrinus, 150, 155. 



Rhizophysiadce, 95. 



Rhizopoda, 44 ; character^ of, 46 ; pseudo- 

 podia of, 46 ; divisions of, 47. 



Rhizostoma, 104, 105. 



Rhizostomidce, 99; definition of, 101; de- 

 velopment of, 101-103; structure of re- 

 productive zooids of, 104, 105. 



Rhynchonelli , 274 V 277. 



Rhynchonellidce, 272, 274. 



Rhynchosaurus, 419. 



Rhynchota (see Ilemiptera). 



Rhytina, 479, 503, 504. 



Ribbon-worms, 167. 



Rissoa, 295. 



Rodentia, 475, 484, 487; general characters 

 of, 541 ; families of, 543; distribution of, 

 in time, 568. 



Rorqual, 508. 



Rot, of Sheep, 165. 



Rotalina, 53. 



Rotatoria, 172 (see Roti/era). 



Rotifera, 135, 158; general characters of, 

 172 ; wheel-organ of, 173 ; water-vascular 

 system of, 174; masticatory organs of, 

 173; affinities of, 176; vitality of, 5; dis- 

 tinctions from Infusoria, 176. 



Round Worms, 169. 



Rugosa, 111, 124 ; characters of, 123 ; dis- 

 tribution of, in time, 132; families of, 134. 



Ruminantia, 511, 512; characters of, 517; 

 dentition of, 519; stomach of, 518; fa- 

 milies of, 520; distribution of, in time, 

 565. 



Rupicapra, 525. 



SabeUa, 184, 188. 

 Sagittd, 189. 



Salamanders, 386, 387, S92. 

 Salamandra, 387, 390. 

 Salmonidce, 361. 

 Salpa, 269. 

 Salpidce, 270. 

 Sand-pipers, 450. 

 Sand-worms, 181, 185. 

 Sanguisuga, 181, 182. 

 Sarcode, 42 ; characters of, 43. 



