533 



INDEX 





Rana catesbiana, 306. 



Rana temporaria, development, 305; dis- 

 sected, 301 ; skeleton, 300. 

 Raphidiophrys, 27. 

 Rasse, 402. 

 Rat, embryo of, 367. 

 Ratitce, 336. 

 Rats, 389. 



Rattlesnakes, 320, 453. 

 Ray, 499. 

 Rays, 279. 



Razor-billed auk, 351, 43S. 

 Razor clams, 249. 

 Recent period, 13, 443. 

 Recessive characters, 475. 

 Rectal gland, of dogfish, 277. 

 Rectrices, 328. 

 Rectum, of cockroach, 195 ; of frog, 301 ; of 



Hirudo, 144; of pigeon, 333. 

 Recurvirostra avocetta, 327, 330. 

 Red blood corpuscles, 270. 

 Red clay deposit, 445. 

 Redi, 499. 

 Redia, 111. 

 Red bat, 397. 

 Red bug, 210. 

 Red coral, 77. 

 Red deer, 383. 

 Red fox, 400. 

 Red lynx, 404. 

 Red snapper, 292. 

 Red squirrels, 388. 

 Red-winged blackbird, 484. 

 Reflex action, 482. 

 Regalecus banks it, 296, 4^0. 

 Regeneration, in Oligochceta, 140; in sea 



cucumbers, 103 ; in starfishes, 92, 94. 

 Reindeer, 383, 440, 452, 457. 

 Remiges, 328. 

 Remold remora, 295. 

 Renaissance, in science, 497. 

 Reproductive instinct, 491. 

 Reproductive organs, of Mammalia, 361. 

 Reproductive system, of birds, 335. 

 Reptilia, 308, 420, 426,432, 451, 453, 454. 

 Reason, 487, 488. 

 Reasoning, evolution of, 493; in animals, 



488. 

 Resemblance, protective, 464. 

 Residual body, 23, 34. 

 Resonance chambers, of monkevs, 409. 

 k- spiratory chamber, offish, 295. 

 Respiratory pore, of Pulmonata, 240, 241. 

 Respiratory system, of birds, 334. 

 Respiratory tree, 103. 

 Respiratory tube, of lamprev, 273. 

 Retrograde metamorphosis, 474. 

 Revenge, in animals, 492. 

 Reversion, 475. 



Rhabdopleura, 259, 260. 

 Rhamphorhynchus, 310. 

 Rhea, 338, 454. 



Rhinoceroses, 379, 380, 453, 454. 

 Rhinoceros unicornis, 379. 

 Rhipuiodoidron, 38. 

 Rhizopoda, 20, 450. 

 Rhopalura giardu, 53. 

 Rhynchocephalia, 321, 421, 451. 

 Rhynchodemus , 106. 

 Rhynchops nigra, 330. 

 Rhvnchota, 204. 

 Ribbon fishes, 450. 



Ribs, of Amphibia, 301 ; of Mammalia, 357. 

 Rice field mouse, 389. 

 Right whale, 376. 

 Ring-tailed lemur, 407. 

 Roach, 286. 

 Robins, 355. 

 Rock pigeon, 462. 

 Rock snakes, 3/7. 

 Rock wallaby, 366. 



Rocks, fossiliferous, 12; igneous, 12; sedi- 

 mentary, 12; stratified, 12. 

 Rodentia, 386, 435, 441, 453, 455. 

 Rollers, 348. 

 Rose bug, 220. 

 Rose chafer, 220. 

 Rose coral, 75. 



Rostrum, of Astacus, 167; of Ncbalia, 160. 

 Rot alia, 25. 

 Rotatoria, 126. 



Rotifera, 126, 451 ; discovery of, 498. 

 Royal rock snake, 317. 

 Rudimentary structures, 472; in embryos, 



Ruffled grouse, 350. 

 Ruminants, 381. 

 Running birds, 336. 



les, 400. 

 mina, 26. 



Sacculim carcini, 1=8. 



Sacred scarab beetle, 219. 



Sacrum, of Mammalia, 357, 359. 



Sage cock, 350. 



'.1 hexaptera, 125. 



Salamanders, 303. 



Salamandra aira, 303 ; 5. maculosa, 303. 



Salivary glands, of cockroach, 195 ; of Mam- 

 malia, 360. 



Salmo fario, caudal skeleton, 292; dissec- 

 tion of, 288 ; exterior, 291. 



Salmo salar, 291. 



Salmon, 291. 



Salmonidae, 291. 



Salpa democratica, 267. 



Salpingasca, 42. 



Salve Linus fen totalis, 292. 



