INDEX 



815 



Rays, 182. 

 Redd, 205. 

 Reeve, E. C, 598. 

 Regidus, 470. 

 Reissner's fibre, 40. 

 Releasers, birds, 481, 501. 



fishes, 225. 

 Rennin in fishes, 208. 

 Reproduction, actinopterygii, 204, 

 208. 



amphibia, 341. 



amphioxus, 41. 



artiodactyls, 745. 



Balanoglossus, 56. 



bats, 591. 



birds, 472, 496. 



chelonia, 397. 



dipnoi, 278. 



earliest chordates, 766. 



elasmobranchs, 163, 167, 180, 

 181. 



elephants, 713. 



hag-fishes, 124. 



hyrax, 708. 



ichthyosaurs, 401. 



insectivores, 582. 



lampreys, 95, 112. 



man, 641. 



marsupials, 559. 



monotremes, 553. 



perissodactyls, 723. 



primates, 606, 616, 620, 623, 630. 



pterobranchs, 58. 



rate, 713, 782. 



reptiles, 380. 



rodents, 657. 



seals, 692. 



sea cows, 721. 



trout, 204. 



tunicates, 66. 



ungulates, 697. 



whales, 673. 

 Reptilia, 369, 39', 533- 

 Respiration, actinopterygii, 196. 



amphibia, 332. 



amphioxus, 34. 



Balanoglossus, 54. 



birds, 471. 



chelonia, 397. 



crocodiles, 420. 



elasmobranchs, 157, 184. 



hag-fishes, 123. 



lampreys, 89. 



reptiles, 378, 412, 420. 



seals, 692. 



snakes, 412. 



tunicates, 63. 



whales, 669. 

 Rete mirabile, 264, 670. 



Rhabdopleura, 50, 58. 

 Rhachitomi, 359. 

 Rhamplwrhynchns, 428. 

 Rhea, 514. 

 Rhineodon, 18 r. 

 Rhinobatis, 180, 182. 

 Rhinoceros, 728. 

 Rhinolophus, 588. 

 Rhipidistia, 268. 

 Rhodeus, 266. 

 Rhynchocephalia, 402. 

 Rhynchosaurs, 404. 

 Rhytina, 720. 

 Ribs, actinopterygii, 199. 



amphibia, 307. 



birds, 441. 



crocodiles, 419. 



elasmobranchs, 132. 



monotremes, 552. 



reptiles, 374, 394, 419. 



synapsids, 542. 

 Rituals, birds, 500. 

 Roach, 237. 

 Robertson, J. D., 124. 

 Robin, 437, 482, 522. 

 Rodents, 652. 

 Roe deer, 715. 

 Rohon-Beard cells, 97. 

 Romer, A. R., 18, 341. 

 Romeria, 326. 

 Rook, 437, 492, 521. 

 Rudd, 247. 

 Ruff, 497, 502. 

 Rumen, 743. 

 Ruminants, 753. 



Sabre-tooths, 566, 589. 

 Saccobranchas, 261. 

 Saccoglossus, 50. 

 Saccus vasculosus, 39, 169. 

 Sacrum, amphibia, 307, 313. 



birds, 438. 

 Salamandra, 302, 334, 358, 364. 

 Salivary glands, amphibia, 342. 



anteaters, 593, 601. 



elasmobranchs, 158. 



lamprey, 89. 



reptiles, 378. 

 Salmo, 191, 204, 237, 247, 250. 

 Sal pa, 70. 

 Saltoposnchus, 417. 

 Sand, A., 218. 

 Sandpiper, 519. 

 Sarcophilas, 564. 

 Sauripterus, 268, 774. 

 Saurischia, 422. 

 Sauropoda, 423. 

 Sauropsida, 371. 

 Sauropterygia, 399. 



