INDEX 



493 



Myrmeleon, digestive system of, *ios; pre- 



daceous, 270; silk glands, 77 

 Myrmica, *2Q9 

 Mystacides, androconia of, 72 



Nagana, 263 .. 



Nagel, 444 



Nearctic realm, 331 



Necrophagous, 373 



Necrophorus, 236, 276 



Needham, 54, 104, 424, .438, 447, 45^, 



462 



Nelson, 453 

 Nemobius, leg of, *5o 

 Neotropical realm, 331 

 Nepa, respiration of, 169 

 Nephrocyte,*! 10 



Nerves, of head, 81, *82; structure, *8i 

 Nervous system, 80; development of, 133, 



*i3S 



Nervures, 54 

 Neuration, *54, *55, *5 6 

 Neuroblasts, *i35 



Neuromeres, 44, *34; of head, *43, 86 

 Neuroptera, defined, 17; metamorphosis of, 



24, *i43 



Newbigin, 458, 460 

 Newcomer, 362 

 Newell, A. G., 44 

 Newell, W., 426 



New Mexico, insect communities in, 399 

 Newport, on metamorphosis, 162; muscles, 



78; 435, 44i, 442 

 Newton, 442 

 Nicolle, 267 

 Noguchi, 255, 256 

 Northrop, 373, 4?6 

 Notolophus, olfactory organs of, 89 

 Notonecta, *i66; locomotion of, *i66; res- 

 piration, 169 

 Notum, 45 



Novius, 275, 4 12 , 428 



Nucleolus, 129 



Number of insects, 2 7 



Nuttall, 464 



Nymph, 139 



Oaks, insects of, 212, 410 

 Oberea, eyes of, 30 

 Obtect pupa, *i47 

 Occipital foramen, 29, *30 



Occiput, 29 



Ocelli, *3i; structure of, 95; vision by, 



96 



Ockler, 437 



Ocular, neuromere, *43; segment, 44 

 Odonata, abdominal segments of, 60; copu- 

 lation of, 65; denned, 14; ocelli, 31; 

 origin, 23; spiracles, 60 

 Odors, 73; efficiency of, 246 

 Odynerus, 225 

 (Ecanthus, abdominal appendages of, 61, 



*i33; embryo, *i335 stridulation, 93 

 (Ecophylla, 291 



(Edipoda, dorsal vessel of, *no 

 (Eneis, distribution of, 325 

 (Enocytes, *H4 

 (Esophageal commissures, *82 

 (Esophagus, *io2, *io3, *io4 

 (Estridae, 234 

 O'Kane, 426, 477 

 Olfactory organs, 87, *88, *8g 

 Oligocene insects, 341 

 Oligophagous, 373 

 Oligotoma, *n 

 Ommatidium, *97, *98 

 Onthophagus, mandible of, *36 

 Onychophora, 2. *3 

 Ophthalmia, 269 

 Orchelimum, stridulation of, 92 

 Orders of insects, 7, * 2 5 

 Oriental realm, 332 

 Origin of arthropods, *8; of insects, 6 

 Oroya fever, 269 



Orthoptera, abdominal segments of, 60: 

 denned, 9; ecological succession, 408 

 origin, 22; stridulation, 92, *93 

 Osborn, 426, 477 

 Osburn, 384, 386,- 387, 45 6 

 Osmeterium, *74 

 Osmia, 225 



Osmoderma, cocoon of, 148 

 Osten-Sacken, 440 

 Ostium, *io9, *no 

 Oudemans, 450 

 Oustalet, 455 

 Ovaries, J. 23, *i26 

 Ovariole, 125 

 Oviducts, 125, *i26 

 Ovipositor, 62, *63, *6j 

 Ovogenesis, 129 



Ovum, of Musca, *i2g; Vanessa, *i2? 

 Ox-warble, *i42, 235 



