;66 



INDEX. 



Nerves, structure of, 288 



thoracic, of imago. 435 



viscera], of larva, 6^ 

 Nervous system, 62, 228, 433, 479 



bibliography of, 62, 433, 479 



comparative morphology of, 62 



development of, 479 



functions of, 228, 473 



morphology of, 494 



See also Neuroblast 

 Neural crest, 482 

 Neural disc of optic stalk, 545 

 Neural surface, 8 

 Neuroblast, 22, 67, 68 



cells of, 480 



changes of, in nymph, 324 



changes of, in pronymph, 491 



of adult larva, 490 



position of, in pronymph, 313 

 Neuromeres, 157 

 Neurospongium, 535 

 Newly-hatched larva, 2 



nerves of, 65 



stomal disc of, 42 

 Newport on alary nerves, 64 



on aorta, 638 



on lateral nerves, 64 



on nervous system of Myriopoda, 



477 



on trachea: of Bombus, 227 

 on visual organs of (Kstrus larva, 



7' 

 Newport's segment, 34, 35, 748. Sec 



Metacephalic ring 

 Newton on Cauliculus, 464 



on optic ganglia of Lobster, 540 

 Nodes of Ranvier, 289 

 Nodulus, 456, 458 

 Notochrysa, hearing in, 498 



pygidium of, 629 

 Notthaft on vision in Arthropods, 



557 

 Nuclear division. Sec Karyokinesis 



and Direct nuclear division 

 Nuclear nucleoli, 268 



threads, fibres, or skeins, 266 

 Nucleolus, 208 

 Nuclcoplusm, 266 

 Nucleus, 264 



accessory. See Paranucleus 



active, 269 



free, 71'. 



hUtolysis of the, 308, 713 



of Graber, 613 



Nucleus resting, 266 



Nussbaum on development of sexual 

 ducts, 703 



Nutrient cells ot egg, 701 



Nycteribia?, 30 



Nymph, development of, 292 



bibliography, 292 

 on fifth day, condition of, 330 

 relations of imaginal discs in, 31 5 

 sections, mode of preparing, 348 

 tracheal ecdysis of, 339 



Nymphoid stage of embryo, 257 



OCELLUS, abnormal, in Cicindela, 



H5 

 compared with pineal eye, 115 



5'4 



development of, 514 

 in nymph, 345 



lens of. 510 



morphology of, 512 



nerve to, 467, 494 



pigment cells ot, 511 



preretinal membrane of, 512 



retina of, 510, 511 



structure of, 510 

 Oculo-olfactory bundle, 468 

 CEsophagtral commissures of larva, 

 491 



connectives in Orthoptera, 449 

 (Esophagus of imago, 407 



of larva, 56 



of nymph, 314 

 CEstrus, pharynx of larva, 46 



pronymph of, 293 



visual organs ot larva of, 71 

 Oinocytes, 274, 276 



bibliography of, 276 

 Oken on antenna-, 589 

 Olfactory bulbs. Sec Anton n,il 

 gang! 1. 1 



cones, 588 



sense, 4<;S 

 Omentum of larva, 86. Sec Fat 



bodies 

 Ommateum, ; i<> 



compared with astronomical tele- 

 scope, 562 



development of, 54^ 



See Compound eye 

 Ongulaire, 209 

 Operculuni, 4 



of 1 1 yiiKiioptera, 179 



