

493 



..;,-/<>/, dii^tivr s\ 

 <l:i( '1.UI.IS, 77 



.U \r: 



f| 72 



M;I, -'63 



Neun tic realm, 331 



..phagous, 373 

 Necrophorus, 236, 276 



Ihum, 54, 104, 424, 438, 447, 45 6 

 462 



Nelson, 453 

 Xcnwln'ns, leg of, *5O 

 Neotropical realm, 331 

 Nepa, respiration of, 169 

 Nephrocyte, no 



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

 :vous system, 80; development of, 133, 



*i35 



vures, 54 



Xeuration, *54, *5S, *S 6 

 Xeuroblasts, *i35 



Xeuromeres, 44, *34; of head, *43, 80 

 Neuroptera, denned, 17; metamorphosis of, 



24, *H3 



Xe \vbigin, 458, 460 

 omer, 362 



Newell, A. G., 44 



Newell, W., 426 



New Mexico, insect communities in, 399 



Newport, on metamorphosis, 162; muscles, 

 78; 435> 44i, 442 



Xewton, 442 



Xicolle, 267 



Noguchi, 255, 256 



Northrop, 373, 476 



Notolophus, olfactory organs of, 89 



Notonecta, *i 66; locomotion of, *i66; res- 

 piration, 169 



Notum, 45 



Novius, 275, 412, 428 



Nucleolus, 129 

 X umber of insects, 27 

 Xuttall, 464 

 Xymph, 139 



Oaks, insects of, 212, 410 

 Obcrea, eyes of, 30 

 Obtect pupa, "147 

 ( Kcipital foramen, 29, *3O 



' 



i re of, 9v 



iromerc, *43', segment, 44 



cgments of, 60; copu- 



lation o! '4't ocelli, 



Odor -46 



Odynerus, 225 



(Bcantlm*, abdominal appendages of, 61, 



13; embryo, *I33J stridulation, 93 

 (Ecophylla, 291 



(Mipoda, dorsal vessel of, *no 

 (Eneis, distribution of, 325 

 (Enocytes, *ii4 

 (Esophageal commissures, *82 

 (Esophagus, * 102, "103, *io4 

 (Estridae, 234 

 O'Kane, 426, 477 

 Olfactory organs, 87, *88, *89 

 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, *25 

 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^ 

 Osmeterium, *74 

 Osmia, 225 



Osmodernm. cocoon of, 148 

 Osten-Sacken, 440 

 Ostium, *i09, *no 

 Oudemans, 45 

 Oustalet, 455 

 Ovaries, 123, "126 

 Ovariole, 125 

 Oviducts, 125, *i26 

 Ovipositor, 62, *63, *67 

 Ovogenesis, 129 



Ovum, of Mnsca, *I29; Vanessa, * 

 warble, *i4-\ 235 



