INDEX 



537 



Proboscis, of Acanthocephala, 124; of/W;- 



r/ossus, 263 ; of Cephalodiscus, 260; of 



phants, 384; of Gastropoda, 231; of 



ihyrea, 142; of Hirudinea, 145; of 



Lepidoptera, 212; of Nemertina, 117, 



119; of Prosobranchia, 234; of Pycno- 



gonida, 187; of Rhabdopleura, 260; of 



Scaphopoda, 242 ; of sea elephant, 406 ; 



of tapirs, 379. 



Proctodeum, of pigeon, 333. 



Proglottis, 113, 115. 



Proneo inertia sluiteri, 230. 



Pronghorn antelope, 384. 



Pro-otic, of frog, 300. 

 don teres, 48. 



Proscolex, 112. 



Prosencephalon, of dogfish, 277; of trout, 

 288. 



Prosobranchia, 233. 



Prosopygia, 128. 



Prosopyles, 55. 



Prostate, of Hirudo, 144 ; of Mammalia, 361. 



Prostomium, 135, 140, 142. 



Protective mimicry, 465. 



Protective resemblance, 464. 



Proteids, 4. 



Proterospongia, 42. 



Prothetria dispar, 214. 



Prothorax, 192. 



Protonopsis horrida, 303. 



Protoplasm, definition of, 4; when first 

 used, 506. 



Protopodite, 147. 



Protopterus annectens, 298, 453. 



Prototheria, 362. 



Protozoa, 19, 447, 450, 451, 456; discovery 

 of, 498. 



Protracheata, 188, 451. 



Proventriculus, of pigeon, 333. 



Pterodactylus spectabilis, 428. 



Pteropoda, 239. 



Pterosauria, 427, 428. 



Psammoclema, 56. 



Pseudonavicella?, 34. 



Pseudoneuroptera, 197. 



Pseudopodia, 20. 



Pseudoscorpionida, 178. 



Pseudospora, 23. 



Psittaci, 346. 



Psocids, 202, 227. 



Psychology, 7, 514; definition of, 514. 



Ptarmigan, 350. 



Pterichthys testudinarius, 418. 



Pterocletes, 351. 



Pteroglossus discolor, 330. 



Pteropod ooze, 445. 



Pteropoda, 447. 



Pterotrachea sen fata, 238. 



Pterygiophores, of trout, 288. 



Pterygopodia, 281. 



Pteryla, alar; caudal; cephalic; crural; 

 femoral; humeral; spinal; ventral, 328. 

 lis, of fowl, 331 ; of frog, 301 ; of Mam- 

 malia, 358. 359. 



Puff adder, 319. 



Putting adder, 317. 



Puffins, 350. 



Pulex avium, 218; /'. imtatis, larva, 218. 



Pulmonata, 239, 451. 

 iting vacuole, 21. 



Puma. 403. 



Pupa, 196. 



Puppy, play of, 489-491. 



Purity of the germ-cells, 475. 



Puikinje, 506. 



Putorius erminea, 399. 



Pycnogonida, 186, 450. 



Pygidium, 174. 



Pygmy elephants, 385. 



Pygmy hogs, 380. 



Pygopodes, 348. 



Pygostyle, of fowl, 331 ; of pigeon, 333. 



Pyloric caeca, 283 ; of Teleostei, 287 ; of 

 trout, 288. 

 ma, 266. 



Python regia, 317. 



Pythonomorpha, 428. 



Pythons, 317, 472. 



Quadrate, of fowl, 331. 



Quadrato-jugal, of frog, 300. 



Quadrula symmetrica, 24. 



Quagga, 378. 



Quahog, 249. 



Quails, 349. 



Quartz crystal, 482. 



Quaternary fossils, 436. 



Quaternary period, 13. 



Queen bee, 225, 226. 



Queen, of termites, 200, 201. 



Quills, of porcupines, 390; of rodents, 386. 



Quinnat, 291. 



Rabbits, 391, 392; in New Zealand, 455 ; of 

 Porto Santo, 468. 



Raccoons, 398, 453. 



Radial carpal, of duck, 329. 



Radiata, 85. 



Radiolaria, 29. 



Radiolarian ooze, 445. 



Radio- ulna, of frog, 300. 



Radius, of duck, 329; of fowl, 331; of go- 

 rilla, 359; of Mammalia, 377. 



Radula, 231; of Cephalopoda, 250 ; of Sca- 

 phopoda, 242. 



Rata maculata, 279. 



Rails, 350. 



Rampkorkynckus, 429. 



