846 - 



Natiicinae 222. 



Natiirliche Auslese 138, 300, 765. 



Naucrotes ductor 341. 



Naupliales Alesoderm 498. 



Nauplius 243, 554, 675. 



Nau p 1 i u s - Larven 472. 



N an pi i us- Stadium 630, 677. 



Navicula 103. 



Mebalia 565, 711. 



Nebenaugen (Scopelidae) 430. 



Nebeukern 12, 270, 581. 



Nebenkernspindel (Infusoria) 267. 



Nebeuniere (Pisces) 57. 



Nebennucleolus (Ovocyten) 291. 



Nebenspermakerne 337. 



Necrobiose 132. 



N ectar i ni i dae 187. 



Nectochaeta 260. 



Nectochaeta- Larve 260. 



Nectnrus 362, 730. 



Nemachilus barbatulus 725. 



Nemathelrainthes Syst. 239, 278, 343, 344, 

 345, 590, Faun. 100, 139, 306. 343, 

 344, 345, 746, -- Biol. 271, 276, 277, 

 278, 313, 343, 344, 391, 564, 565, 590, 

 746, Anat. 313, \Jorph. 239, 276, 



- IntginDt. 239, 274, 276, 344, 565, - 

 Nerv.Syst. 239, 274, 277, 398, Sinnes- 

 org. 274, Muscl. 239, 274, 277, - 

 Ernahr.App. 275, 276, 277, 278, 525, - 

 Excr.Org. 274, 276, 277, 278, 356, 399, 



Genit.App. 239, 270, 275, 276, 278, 

 294, 525, - - Drusen 239, 277, 278, 526, 



- Histol. 239, 344, - Entwickl. 270, 

 276, 277, 278, 294, 306, 312, 313, 398, 

 553, 590, 591, 625. 



N em at odes 100, 139, 270, 273, 276, 277, 

 278, 306, 310, 313, 343, 344, 345, 356, 

 391, 398, 525, 564, 565, 590, 591, 746. 



Nematois 655. 



Nematorhyucha 310. 



Nematus 650. 



Nemertini 146, 493, 752. 



Nemocera 719. 



Nemoptera 163. 



Nemoura cuvicularis 654, borealis 654, 

 cinerea 654, dubitans 654, fumosa 

 654, humeralis 654, inconspicua 

 654, - - marginata 654, - nitida 654, 



palicornis 654 , praecox 654 , 



sulcicollis 654. 

 Nemouridae 653. 

 Neomenia 111. 

 Neomenidae 776. 

 Neomorphaster forcipatus 42. 

 Neophryninae 157. 

 Neophrynus 157. 

 Neorhynchidae 239. 



Neorhynchus agilis 238, dlavaeceps 238. 

 Neoris 215, shadulla 215. 

 Neossopt ilae 381. 

 Nepa 251, - - cinerea 289. 

 Nephelis 152. 



Nephridialdriise (Gastropoda) 483. 



Nephridialgauge (Insect a) 653. 



Nepbridien (Annelides) 152, 202, 261, 

 263, 401, 648, 649. 



Nephridioporen (T u r b e 1 1 a r i a) 694. 



Nephridium (Bryozoa) 307,403, (Tar- 

 dig ra da) 309. 



Nephvostomen (Amphibia) 179, 366, 

 (Tardigrada) 308. 



Nephthya 140, -- amentacea 141, chabroli 

 141, - - coliimnans 141. 



Nepticulidae 655. 



Neptunus 708. 



Nereis 413, 526. 



Nerfs cruraux 715. 



Neritina 415, 681. 



Nervenbecher 162. 



Nervenelemente (H y d r o i d e i) 589 



Nervenendapparate (Annelides) 261. 



Nervenendigungen (Cestodes) 43, - (Ne- 

 matodes) 277, (Pisces) 429. 



Nervenendplatten 723. 



Nervenfasern (A r thr opo da) 715. 



Nervenfaserschicht (Arachnidenauge) 507. 



Nervenfibrillen (Arth r opo da) 714, 

 (Gastropoda) 571. 



Nervenleiste (Amphibia) 362. 



Nervenring (Nematodes) 274, 277. 



Nervensystem (Krankheiten) 226. 



Nervenzelleu (Gastropoda) 570, -- (Ro- 

 tatoria) 757, --. (Tur bellar ia) 794. 



Nervus acusticus (Gastropoda) 572, 573, 

 - hypoglossus(Amniota) 666, laryn- 

 geus (Mammalia) 445, 447, lateralis 

 (Pisces) 425, opticus (Cephalo- 

 poda) 359, -- (Pisces) 177, -- visce- 

 ralis (Cephalopoda) 357. 



NesoJcia hardwickei 191, - - indica 191. 



Nesselfadeu (Hydroidei) 489. 



Nesselkapseln (H y droidei) 302, 303, 489, 



(Scyphomedusae) 112. 



Nesselorgane (Hydroidei) 302. 



Nesselzelle (Hydroidei) 302, 489, (T re- 

 in at o d es) 390. 



Nestbau (Aves) 96, 672, (Batrachia) 



615. 



Nestor norfolcensis 441, - - prodttctus 441. 

 Nettle-threads 586. 

 Netzhaut siehe Retina. 

 Neu-evolutionistische Anschauung 621. 

 Neuralleiste (Amphibia) 362. 

 Neuralplatten (Chelonia) 377, 667. 

 Neurapophysen (Rep t ilia) 665. 

 Neurilemm 570. 

 Neurocbord 722. 

 Neurochordzellen 493. 

 Neuroctenus damarensis 83, dilatatus 83, 



medins 83, - secrelus 83, - trigo- 

 nus 83. 



Neuroglia 571. 

 Neuromeren 176. 

 Neuromerie 729. 

 Neuronephroblasten 527. 



