INDEX 



559 



Pterylosis, 462, 463. 



Ptyalin, 344. 



Pubis, 342; of birds, 470; of frog, 



416 : of mammals, 503. 

 Pulmonary sacs of Arachnida, 257. 

 Pupa, 251. 

 Pygopus, 436, 437. 

 Pygoslyle, 465, 487. 

 Pyxicola, 53. 



Quadrate bone, 414. 

 Quadrato-jugal, 414. 

 Quadrula symmetrica, 20. 

 Quill, 460. 



Rabbit, 331, 491, 526. 



Rachis, 461. 



Radiale, 469. 



Radiolaria, 31. 



Radio-ulna of frog, 415. 



Radius, 341, 501 ; of bird, 469. 



Radula, 293. 



Radula sac, 293. 



Rana esculenta, 408, 415, 429; tem- 

 po raria, 408, 412, 413, 417, 420, 421 ; 

 metamorphosis of, 430. 



Rat, 526. 



Ratitse, 483. 



Rattlesnake, skull of, 445. 



Ray, 388,394; electric, 392; sting, 388. 



Razor fish, 281. 



Rectrices, 463. 



Rectum, of molluscs, 271; of mam- 

 mals, 507. 



Remiges, 463. 



Reproduction, 18, 24, 72. 



Reptilia, 433. 



Respiration, 70; of vertebrates, 332, 



349- 

 Rhabdopleura, 311. 

 Rhinoceros, 526, 538. 

 Rhipidodendron, 37. 

 Rhizopoda, 14, 19. 

 Rhizostomeae, 112. 

 Rhyncheta, 51. 

 Rhyncbocephalia, 434. 

 Ribbon, lingual, 293. 



Rib, 336. 



Ribs, of birds, 463, 494; false, 495; 



floating, 495. 

 Rodentia, 526, 541. 

 Rostellum, 140. 

 Rostrum, 216. 

 Rotalia, 22. 

 Rotifera, 178. 

 Ruminants, 526. 



Sac, scrotal, 520. 



Saccammina, 25. 



Sacral vertebrse, 335. 



Sacrum, 494. 



Salamander, 432. 



Salamandra maculosa, 432. 



Salmo, fario, 395, 401 ; fontinalis, 395. 



Salmon, Burnet, 405. 



Salpingoeca, 39. 



Saprophytes, 45. 



Saprophytic, 42. 



Saw-fish, 387. 



Scales, ctenoid, 398; cycloid, 398; 



ganoid, 399; of legs of birds, 459; 



placoid, 367 ; of reptiles, 435, 439. 

 Scallop shell, 2S0. 

 Scaphoid, 502. 

 Scapula, 414; of birds, 468. 

 Sclerotic, 356; plates of bird's eye, 



480. 

 Scolex, 140. 

 Scolopendra, 240. 

 Scorpion, 255, 259; anatomy of, 258; 



carapace of, 255. 

 Scuta, 240. 



Scutes of bony fishes, 399. 

 Scutigera, 240. 

 Scyllium, canicula, 338, 345, 366, 371, 



376 ; catulus, 366. 

 Scyphozoa, 91, 108. 

 Scyphula, 112. 

 Sea-hare, 288, 291, 296. 

 Sea-horse, 404. 

 Sea-squirts, 314. 

 Sea-urchins, 170. 

 Seal, 526, 540; earless, 540. 

 Segmental organs of annelids, 196. 



