INDEX 



407 



Patella, 170. 



Pauropus, 77. 



Pearl-bearers, 185 ; fishery, 185-186. 



Peccaries, 326. 



Pecten, 186. 



Pectinatella, 143. 



Pectinidfe, 190-191; locomotion of, 186. 



Pedicellina, 141. 



Pelicans, 306. 



Perches, 235, 252. 



Peritricha, 229. 



Petrels, 306. 



Petricolidae, 189. 



Petromyzon, 245. 



Pewee, 296; nest of, 296. 



Pheasants, 304 ; range of, 305. 



Phalangina, 93. 



Pharyngognathi, 93. 



Phasmidse, 7, 15. 



Phasmomantis, 8. 



Philampelus, 23. 



Philinidae, 176. 



Phoca, 328. 



Pholadidse, 181, 188. 



Pholis, 237. 



Photuris, 52. 



Phrynosoma, 269. 



Physa, 161, 167; food of, 166; habitat 



of, 166. 

 Physalia, 213. 



Physiological division of labor, 120. 

 Physostomi, 253. 

 Phytophaga, 43. 

 Pickerels, 242. 

 Pickerel frog, 266. 

 Pieris, 21 ; rapae, increase and spread 



of, 283. 

 Pigeons, 304. 

 Pigs, 336. 

 Pike, 242. 

 Pimpla, 37. 

 Pin worm, 153. 

 Pine borers, 53. 

 Pinnotheres, 109-110. 

 Pipa, 262 ; with embryos, 263. 

 Pipe-fishes, 244, 253. 

 Pipidffi, 263. 

 Piranga, 293. 

 Piroplasma, 228. 



Pisidium, 191. 



Pithecanthropus, 331. 



Planarians, abnormalities of, 155 ; 



fresh-water, 153; regeneration of, 



154. 

 Planorbis, 167; eggs and habitat of, 



167. 



Plant-eating hymenoptera, 43. 

 Plant galls, 67. 

 Plant lice, 14. 

 Platyouichus, 110. 

 Platypsylla, 56. 

 Plectognathi, 253. 

 Plethodon, 259. 

 PlethodontidfB, 259, 267. 

 Pleurodelidse, 267. 

 Pleurotomidse, 176. 

 Plovers, habitat of, 305. 

 Plnmatella, 142. 

 Plume-moths, 42. 



Podophora, food and habitat of , 225. 

 Podopthalmata, 122. 

 Poisonous spiders, 91-92. 

 Polistes, 33. 

 Polychseta, 136, 148. 

 Poly-cirrus, 149-150. 

 Polydesmidse, 79. 

 Polydesmus, 77, 79. 

 Polymorphism in butterflies, 17. 

 Polyphemidse, 131. 

 Polyxenidre, 78. 

 Polyzoniidae, 79. 

 Pond snail, habitat of, 166. 

 Portuguese man-of-war, 213-214. 

 Postembryonic development of frog, 



334. 



Pouched gopher, 320. 

 Prairie dog, 320. 

 Prawns, 104, 124. 

 Praying-mantis, 8, 14. 

 Primates, 329, 331. 

 Prionus, 54. 

 Prosobranchiata, 160. 

 Protection, of birds, 312; of lobster, 



102. 



Protective resemblance, 18-21. 

 Proteidae, 257, 266. 

 Protozoa, 222 ; relations to man, 228; 



reproductive capacity of, 228. 



