INBEX 



721 



Radio-ulna, 273, 267 

 Radius, 82*, 83— See Limb skeleton 

 Rails, 416, 426 

 Bajida, 170* 

 Rallus, 416, 426 



Rana temporaria and R. bsculknta, 

 264 : External charact,ers, 265 : Endo- 

 skeleton, 266, 267-274 : Muscular sys- 

 tem, 274, 275 ; Digestive organs, 276, 

 277 : Respiratory organs, 277 : Circula- 

 tory organs, 278-284 : Nervous system, 

 284, 285 : Sensory organs, 284, 285 : 

 Urinogenital organs, 286, 287, 288 : 

 Development, 288, 289, 290, 291 : 

 Systematic position, 294 

 Rana pipiens, 265 

 Range, 625* 

 Ranidm, 294* 

 Banidens, 299 

 Rapacious Birds, 442 

 Ratit*, 410*, 423, 425, 427, 429, 430, 433, 



442, 445 

 Rats, 484 



Rattlesnakes, 335, 849 367, 

 Rauber's layer, 589* 

 Raven, 417 

 Ray, John, 668, 671 

 Rays, 170-187 

 Recapitulation Theory, 646 

 Recent period, 642 

 Receptaculura chyli, 574 

 Recessive characters, 665* 

 Recognition-marks, 424 

 Rectal gland, Dogfish, 154 

 Rectrices— See Pterylosis, 385 

 Rectus abdominis, 274, 275 

 Red-bodies, 237* 

 Red Deer, 536, 541, 542, 543 

 Red-glands, 237* 

 Redi, 671 



Reef-fishes, 224, 244 

 RegaXecus, 233, 635 

 Regeneration, 659* 

 Reindeer, 501, 502, 



Relationships of Adeloehorda, 13, 43 : 

 Uroohorda, 42 : Amphioxus, 65 : Cyclo- 

 stomata, 142 : Amphibia, 312 : Aves, 

 443 : Ohordata, 610 ; Phyla of Animals, 

 616 

 Remiges — See Pterylosis, 385* 

 Renal artery, 92 : vein, 93 

 Renal organs — See Excretion, organs of, 



and Urinogential organs 

 Renal portal system, 94*— See Vascular 



system 

 Replacing bones, 78* 

 Reprodoctive organs of Balanoglossus, 

 7: Cephalodiscus, 11, 12: Asoidia, 

 21 : Urochorda, 31 : Amphioxus, 55— 

 See Urinogenital organs 

 Beptilia, 313 : Example, 314 : Distinc- 

 tive characters arid classification, 334 ; 



External features, 338 : Integument 

 and exoskeleton, 342 : Endoskeleton, 

 343 : Digestive organs, 355 : Organs of 

 respiration, 357 : Organs of circulation, 

 358 : Brain, 360 ; Sensory organs, 360 : 

 Reproductive organs, 362 : Develop- 

 ment, 362 : Ethology, 365 : Geographical 

 distribution, 369 : Geological distribu 

 tion, 370 : Extinct groups of reptiles, 

 371 : Relationships, 610 



Respiration, organs of, Amphioxus, 48 ; 

 Craniata, 88 : Petromyzon, 129, 130 : 

 Ghiloscy ilium, 154 ; Elasmobranchii, 

 178: Holocephali, 192: Trout, 212: 

 Teleostomi, 234 : Oeratodus, 250, 251 : 

 Frog, 277 : Amphibia, 304 : Lixard, 

 328 : Reptilia, 357, 368 : Pigeon, 397. 

 398, 399, 400 : Aves, 434 : Rabbit, 

 466 : Mammalia, 576 



Respiratory, heart, 96* 



Respiratory tube of Petromyzon, 128, 

 129, 130 



Respiratory valves, of Trout, 199 



Restiform bodies, 193 



Rete mirabile, 178* 



Reticulum, 571* 



Retina, Craniata, 110*, 111 



Retropinna, 620 



Reversal of selection, 655* 



Rhabdopleiira, 2, 9, 12, 13, 613 



Rhamphorhynchus, 377 



Rhamphotheca, 408* 



Rhea, 411, 421, 430, 442, 445 



Bheffi, 411, 435, 443 



Rhina, 178 



Rhinencephalon, 100* — See Brain 



Rhinobatus, 181 



Rhinoceros, 482, 490, 502, 504, 537, 638, 

 541, 543, 544, 599 



Rhinoceros indicvs, 504 



Rhinochetiis, 633 



Rhinocoele, 100* — See Brain 



Rhinoderma darwini, 309 



Rhomboid scales, 228* 



Ehynchocephalia, 335*, 339, 344, 371 



Rhytina, 481, 568, 598, 606, 642 



Ribbon-fishes, 224, 232 



Ribs, of Craniata, 71, 74 : Dogfish, 147 : 

 Teleostomi, 229 : Urcdela, 299 : Lizard, 

 316 : Reptilia, 344, 345, 346, 347 : 

 Pigeon, 385 : Aves, 424 : Rabbit, 449 : 

 Mammalia, 510 : Edentata, 526 : 

 Oetacea, 531 : Sirenia, 534 : Carnivora, 

 544 : Chiroptera, 550 : Rabbit, 449 



Rita buchanani, 220 



River tortoises, 336, 341, 368 



Rook-pigeon, 378 



Rock Wallaby, 495, 523, 578 



Eodentia, 484*, 492, 547, 548, 549, 569, 

 574, 575, 581, 595, 599, 609 



Rods and cones, of retina, 111* 



Rollers, 417 



