670 



INDEX. 



Raptores. 475 ; characters of, 501 ; sec- 

 tions oif, 502. 



Rasnres, 41)5, 471, 475; characters of, 

 487 ; sections of, 488. 



liastrites, lU. 



Rat, 590. 



Rate], 580. 



Itatitce, 472. 



Rays, 394, 305, 398, 399, 405. 



Red Coral, 119, 128. 



liegnum Protisticum, 8. 



Rein-deer, 562, 564. 



Rep rod action, general phenomena of, 24- 

 34 ; sexual, 25 ; non-sexual, 25-34. 



JleptiUa, 35i>, 360 ; general characters of, 

 419 ; jaw of, 4r20 ; teeth of, 421 ; circula- 

 tion of, 422 ; respiration of, 423 ; orders 

 of, 423-452. 



Respiratory tree, of Holothuriana, 161. 



Respiratoi-y tubes, of JRotifera, ]82. 



Itetieulosa (see Foraminifera)^ 54, 56. 



Jtetiolites, 111. 



Reversed shells, 278. 



Ithabdocoela, 174. 

 , Rkahdoidea, 67. 



Jihabdopleura, 284, 289. 



Jthabdopleurea, 286. 



JlkaTtbphastidie, 493, 494. 



Jihea, 486. 



Rhinohatis, 399. 



JthinoceridcB, 553, 613. 



Rhinoceros, 553, 554, 613. 



Rhino lophidcR, 594. 



Rhin/jlophxbS, 594. 



Rhizocephala, 207; characters of, 210. 



RMzoorvnuSy 156, 157, 162. 



Rhizophysiadce, 99. 



Rhizopoda, 4Q,; characters of, 48 ; pseudo- 

 podia of, 48 ; divisions of, 49. 



Rhizostoma, 109, 110. 



RhizostomidcE, 104 ; definition of, lOB ; 

 development of, 106, 107 ; sti-ucture of 

 reproductive zonids of, 109. 



Rhynchonella, 296, 298. 



RhynchonellidoB, 294, 295, 296. 



Rhynchosaurus, 449. 



Rhynchota (see Hemiptera). 



Rhytina, 517, 542, 543, 544. 



Ribbon-worms, 174. 



RiKSoa, 318. 



Itodeniia, 513, 522, 525; general char- 

 acters of, 586; families of 5S7-591; dis- 

 tribution of, in time, 616. 



Rorqual, 548. 



Rot, of Sheep, 173. 



Rotalvna, 56. 

 'Rotat&ria^ 179 (see Rotifera), 



Rotifera, 6, 165; characteisof, ISO; wheel- 

 organ of, 180; water-vascular system of, 

 182; masticatory organs of, 181; affini- 

 ties of, 383; vitality of, 6; distinctions 

 from iT^fusoi'ia, 183. 



Round-worms, 176. 



Rugosa, 116; characters of, 128; distribu- 

 tion of, in time, 138; families of, 140. 

 Ruminantia, 513, 614, 516; characters of, 

 558; dentition of, 660; stomach of, 658, 

 659; families of, 661; distribution of, in 

 time, 614. 

 Rupicapra, 566. 

 Sabella, 193. 

 Sabellariat 194. 



Sable, 580. 

 Scenuridce, 191, 



Sagitta, 198. 



Salamanders, 410, 411, 412, 4iJL 



Salamandra, 413,' 4i(j. 



Salmonidm, 385, 



Salpidce, 290, 292. 



Sand-pipera, 483. 



Sand-worms, 194. 



Sanguisuga, 190, 191. 



Sarcode, 44; characters of, 44, 43^ 



Sarcodictyum, 126. 



Sarcoids, of Sponges, 64, 65, 67. 



Sarcoptes, 240. 



Sarcorhampus, 604. 



Sarsia, 102, 103. 



Sauria, 436. 



Saurillus, 441. 



Saurobatraohia, 410 (see Urodela). 



Saurocetes, 613. 



Sauropsida, 360. 



Sauropterygia, 423; general characters of, 

 447; distribution of, in time, 448. 



SaururcBy 472, 474; characters of, 505; 

 distribution of, in time, 507. 



Saw-iish, 399. 



Saxicava, 308. 



Scalaria, 318. 



Scahps, 697. 



Scalpelluftn, 214. 



^cansores, 474; characters of, 492; fam- 

 ilies of, 493. 



Scaphites, 335. * 



Scaphognathite, 206. 



Seetidotherium, 618. 



ScincidcB, 437. 



Scinctis, 438. 



Scissurella, 318. 



SciuridcB, 691. 



Scviiropterus, 591. 



Sciurus, 691. 



Sclerencbyma, 121. 



Sclerobasica {Zoantharia), 119: divisions 

 of, 122. 



Sclerobasic corallura, 119, 121; 



Sclerodermata {Zoantharia), 122; divi- 

 sions of, 123, 139. 

 .Sclerodermic coralli^m, 119, 123. 



Sclerogenidce, 387. 



Scolecida, 141, 142; characters and divi- 

 sions of, 165, 106. 



Scolex, 168, 170, 171. 



ScoUtes, 197. 



Scolopacidce, 483. 



Scolopendra, 245, 246. 



Scorr&eridce, 387. 



Scorpion, 236, 241, 242. 



Scorpio?iidce, 242; characters of, 242; dis- 

 tribution of, in time, 244. 



Scutigera, 246, 



Scyllcea, 819. 



Scylla/rldm, 203. 



Scythrops, 493. 



Sea-anemonee, 117, 184. 



Sea-cucurabers, 160. 



Seals, 575. 



Sea-mouse, 194, 195. 



Sea- slugs, 814. 



Sea-spiders, 289. 



Sea-worms, 194. 



ScBmental organs, of Leeches, 100; of 

 Earthworm , 192 ; of Errant Annelides. 1 95. 



