408 



INDEX 



Protozoa, malaria-producing, 4 



Pseudobranchus strialus, 230 



Pseudopodia, 2 



Psitiiyrus, 184 



Psittaci, 297 



Pterosauria, 257 



Pteryla;, 259 



Pulicidae, 161 



Pulmonata, 83 



Puma, 364 



Pulorius fetidus, 360 



rixosus, 361 

 Pygopodes, 281 

 Pyralis farinalis, 164 



Quail, 292 



Raccoon, 358 

 Radiolaria, 3 



ooze, 9 

 Raiida;, 206 

 Rail, 289 

 Rana cateshiana, 230 



clamata, 236 

 Rangifer tararidus, 340 

 Raptores, 294 

 Rat fleas, 162 

 RatitEB, 265, 278 

 Recurvirostra mnericana, 291 

 Reindeer, 340 

 Remora, 210 

 Reptilia, 236 

 Resemblance, protective, of bats, 370 



of birds, 270 



of crayfishes, 99 



of flat-worms, 34 



of geometrids, 165 



of insects, 115 



of pipe-fish, 217 



of sea-cucumber, 61 



of sea-urchin, 58 



of weasel, 361 

 special protective, kalliiiia, 118 



mantids, 136 

 variable protective, 118 

 Rivalry of birds, 276, 292 



of seals, 366 

 Rock wallabies, 323 

 Rodcntia, 350 

 Rotifera, 46 

 Round-worms, 41 

 Ruminants, 336 



Saimiri, 374 

 Salamander, 231 



maculosa, 227 

 Salamandridse, 231 

 Salmon, 213 

 Salmonidse, 213 

 Sand-stars, 57 

 Sand-worm, 69 

 San Jos6 scale, 148 

 Sarcode, 11 



Sarcophaga sarracenice, 155 

 Sarcoptes scabei, 110 

 Sargassum, 198 

 Sauropterygia, 256 

 Saw-flies, 175 

 Scale bugs, 146 

 Scales, ctenoid, 198 



cycloid, 198 



ganoid, 197 



placoid, 197 

 Scallop, 77 



Scalops aquaticus machrinus, 367 

 Schleiden, 382 

 Schools of fishes, 212 

 Schwann, 3S2 

 Sciuropterus, 352 

 Sciurus, 352 

 Scolopendra, 111 

 Scombridse, 215 

 Scorpanoids, 204 

 Scorpionida, 103 

 Scorpions, 103 

 Sea-anemone, 27 

 Sea-cucumber, 61 

 Sea-horse, 217 

 Sea-mussels, S4 

 Sea-squirt, 192 

 Seals, 365, 366 

 Segmentation, 3S5 

 Self-defense of amphibians, 226 



of fishes, 204 



of glass-snake, 246 



of insects, 115 



of snakes, 241 



of turtles, 251 

 Sesia, 17.") 

 Setir, 67 



Sexual selection, 389 

 Sheep, 345, 347 



bot-flv, 15ti 

 Slirimp,' 99 

 Silurida?, 212 

 Simiidff, 375, 376 

 Siiihonaptera, 161 



