576 



INDEX 



Reticular tissue, 426 



Retractor bulbi muscles, 293 



Rhabditis, alternation of generations in, 



90 

 Rhabdocoela, 72 

 Rhea, 335 

 Rhinoceroses, 4C0 

 Rhinoceros beetle, 195 

 Rhodeus amarus, 247 

 Rhomaleum micropterum, 180 

 Ribbon snake, 315 

 Richards, conduction of nerve impulse, 



159 

 Riddle, O., 532, 537 



Right whales, 410 



Ringed gecko, 311 



Ringhals, 319 



Ring necked snake, 316 



Robber crabs, 175 



Rock borer, 151 



Rock crabs, 175 



Rock pigeon, 344 



Rock wallabies, 376 



Rocky mountain bighorn, 405 



Rocky mountain goat, 405 



Rodentia, 389 



Rotifer, 122 



Rowan, 367 



Royal jelly, 198 



Royal purple, 152 1 



Roxas, 537 



Ruffed grouse, 343 



Rumen, 433-434 



Russell's viper, 320 



Ruthven, 315 



SABELLARIA, 118 



"Saber-tooth" cats, 380 



Sacculina, 172 



Sacred African crocodile, 309 



Sacred beetle, 195 



Sagartia, 68 



Sailfish, 251 



Saki monkey, 412 



Salamandrinae, 267 



Salientia, 269 



Salivary glands, 428-429 



Salmon, 242 



Salpa cabotii, 211 



Salt water crocodile, 309 



Sampson, 138 



Sand collar snail, 153 



Sandhill crane, 341 



Sand natter, 320 



Sandpipers, 343 



San Jose scale, 185 



Santonin, 97 



Sarcodina, 22 



Sauropterygia, 331 



Saururae, 370 



Sawfish, 227 



Scab parasite, 201 



Scale insects, 184 



Scales of fishes, 2S4 



Scallop, 1 49 



Scarlet king snake, 316 



Schistosoma, 77 



Schroder, 54I 



Scolex, 79 



Scolopendra, 177 



Scorpaenoid fish, 257 



Scorpion flies, 185 



Scorpionidae, 201 



Scott, E. L., 445 



Scutigera forceps, 177 



Scyphozoa, phosphorescence in, 61 



Sea anemone, 63 



Sea basses, 247 



Seabright bantam, 537 



Sea-cucumber, 137 



Sea egg, 137 



Seahorse, 247 



Sea lizard, 312 



Sea slug, 137 



Sea snake, 317 



Seasonal mateships, 485 



Sea squirt, 213 



Sea urchins, chiseling rocks, 136 



Second polar body, 500, 505 



Secretary birds, 348 



Secretory granules, 6 



Segregation, 545 



Selachii, 225 



Seminal receptacles, iii, 113 



Sense of smell in birds, 365 



Sense organ, Arthropoda, 207 



