5«4 



Index 



Nabidae, 306 



Nabis, 306 



Nabours, Robert K., 292 



Naididae, 193 



Nasturtium aphid, 321 



Natural pond cultures, 69 



Natural spawning, 394 



Naucoridae, 313 



Navicula, 95, 185 



Neanura, 263 



Necturus, 158 



Needham, J. G., 1, 40 



Needier, Alfreda Berkeley, 231 



Nelson, J. R., 533 



Nemathelminthes, 166 



Nematoda, 150, 162, 166 



Nemertea, 162 



Nemoura, 273 



Neoaplectana, 172 



Neodiprion, 488 



Neosciara, 266 



Neotetranychus, 257 



Nepa, 310, 313 



Nephelopsis, 203 



Nephrotoma, 374 



Nepidae, 313 



Nereidae, 182 



Nereis, 182, 184 



Nereocystis, 185 



Neuroptera, 331 



Nevin, F. R., 272 



Nigrelli, R. F., 86, 158 



"Nipagin," 444 



Nitella, 313, 450 



Nitidulidae, 453 



Nitzschia, 17, 35, 37, 95, 185, 225, 552, 



S69 

 Noctuidae, 361, 364 

 Noland, Lowell E., 228 

 Noncalcarea, 137, 139 

 Notolophus, 365 

 Notonecta, 312 

 Notonectidae, 312 

 Novikoff, Alex B., 187 

 Nudibranchs, 238 

 Nuttycombe, John W., 135 

 Nyctotherus, 69, 128 

 Nysius, 302 



Oats, 71, 459 

 Oat straw infusion, 127 

 Observation nest, 509 

 Ochromonadidae, 57 

 Ochromonas, 62 

 Odonata, 268, 270 

 Oedipodines, 289 

 Oedogonium, 93 

 Oicomonas, 62 

 Oligochaeta, 191, 193, 20 3 



Oligotoma, 281 



Oligotrichida, 129 



Olios, 242 



Oncopeltus, 299 



Oniscus, 230 



Ootheca, 283 



Opalina, 69 



Opalinidae, 98 



Ophioderma, 553 



Ophiurae, 553 



Ophiuroidea, 553 



Ophryoglenidae, 103, 109 



Opisthobranchiata, 531 



Oribatoidea, 245 



Oriental fruit moth, 345, 493, 512 



O'Roke, E. C, 236 



Orthoptera, 242, 282 



Orton, J. H., 237 



Osmoderma, 469 



Ostracoda, 217, 228, 312 



Ostrea, 238, 537 



Overflow siphon, 22 



Overwintering, 412 



Oviparous forms, 568 



Oviposition, 347, 353, 377, 443, 456, 486, 



498 

 Oviposition cage, 347, 353, 456 

 Oviposition tray, 466 

 Oviposition vials, 250 

 Ovomucoid medium, 66 

 Ox gall, 176 

 Oxytricha, 64, 128 

 Oxytrichidae, 130 

 Oxyuriformidae, 172 

 Oyster, 86, 241, 537 

 Oyster drills, 532, 535 

 Oyster tongs, 7 



Pablum, 49 



Packard, Charles Earl, 176 



Palm, C. E., 472 



Paludicella, 178 



Pandalidae, 231 



Pandalopsis, 231 



Pandalus, 231 



Paniscus, 497 



Pantala, 272 



Papaipema, 361 



Paraffin, 66, 137, 245, 295, 320, 466, 496 



Parameciidae, 112 



Paramecium, 55, 60, 62, 100, 102, 105, 



112, 119, 121, 126, 127 

 Parapolytoma, 113, 116 

 Parasite-free chicks, 89 

 Parasites, 291, 348, 513, 516 

 Parasitic flatworms, 156 

 Parasitic nematode larvae, 171, 173 

 Paratenodera, 284 

 Paratettix, 292, 293 



