INDEX TO NEW GENERA AND SUBGENERA. 
13 
Neopolita, Warren, Ins. 281 
Neorileya, Ashonead, Ins. 230 
Neosconella, Cambt^idffe, Arachn. 29 
Neoseius, Oudemans, Arachn. 45 
Neosyagrius, Lea, Ins. 178 
Neotaxia, Dognin, Ins. 281 
Neplirocoria, Stichel, Ins. 246 
Nerissella, Jacohy, Ins. 194 
Nervicompressa, JBethune-Baker, Ins. 
261 
Nesiopheedusa, Pilshry, Moll. 68 
Nesohippus, Ameghino, Mamm. 49 
Nesolycaena, Waterhouse and Turner^ 
Ins. 250 
Nesomyia, Ashmead, Ins. 230 
Nezumia, Jordan and >Sta?'ks, Pisces 
40 
Nicholsonia, Bogatireiv, Coel. 30 
Nichomachus, Distant, Ins. 327 
Nicostratus, Distant, Ins. 327 
Niphoparmena, Aurivillius, Ins. 188 
Nipponites, Yabe, Moll. 60 
Nodiilina, Rafray, Ins. 142 
Nomimonyx, Faust, Ins. 178 
Notamphicyon, Ameghino, Mamm. 
50 
Notanisomorpha, Ashmead, Ins. 230 
Nothamusium, Hind, Moll. 90 
Notochampsa, Broom, Rept. 29 
Notoprotogonia, Ameghino, Mamm. 
49 
Nyctereutica, Turner, Ins. 289 
Nycterorhinus, Fa.irmadre, Ins. 179 
Nyctibates, Boulenger, Rept. 36 
Nyctidea, Renter, Ins. 327 
Nymannus, Distant, Ins. 328 
Ochisme, Kirkaldy, Ins. 315 
Ochleroptera, Eohnherg, Ins. 212 
Ochrophlegma, BoUvar, Ins. 361 
Ochrorrhaca, Breddin, Ins. 318 
Ochrotettix, Bruner, Ins. 361 
Ocosia, Jordan and Starks, Pisces 
31 
Octomitus, Proioazek, Prot. 57 
Octomylodon, Ameghino, Mamm. 51 
Octosmicra, Ashmead, Ins. 230 
Ocyglossa, Giard, Prot. 57 
Ocynectes, Jordan and Starks, 
Pisces 29 
Odontogonus, Bergroth, Ins. 323 
Odc-.topsalis, Burr, Ins. 353 
Odoiitothynniis, Cameron, Ins. 212 
Odontotrupes, Boucoraont, Ins. 151 
QEdalechilus, Fowler, Pisces 41 
(Edaloneura, Mahille, Ins. 252 
CRdania, Buckman, Moll. 61 
Q^mida, Gahan, Ins. 188 
GEmodana, Gahan, Ins. 188 
GLnides, Mahille, Ins. 252 
CEnomys, Thomas, Mamm. 40 
Ogovia, Hansen and Sorensen, 
Arachn. 37 
Ogulnia, Cameron, Ins. 221 
Olbophthalmus, Simon, Arachn. 32 
Oligozaptyx, Pilshry, Moll. 68 
Ohndioides, Goto, Coel. 20 
Olha, Dyar, Ins. 289 
Ololajlaps, Berlese, Arachn. 45 
Omotimns, Raff ray, Ins. 142 
Onchodellus, Berlese, Arachn. 46 
Oncinoproctiis, Breddin, Ins. 318 
Oncochalcis, Cameron, Ins. 230 
Oncotophasma, Rehn, Ins. 356 
Oneilella, Cameron, Ins. 222 
Onomaus, Distant, Ins. 328 
Onychelus, Coolc, Myr. 16 
Onycocaris, Nohili, Crust, 36 
Oocamenta, Peringuey, Ins. 154 
Oophsedusa, Pilshry, Moll. 68 
Ophelias, Raffray, Ins. 142 
Ophiochrysis, Koehler, Echin. 83 
Ophiocirce, Koehler, Echin. 83 
Ophiocrates, Koehler, Echin. 84 
Ophiodoris, Koehler, Echin. 84 
Ophioleuce, Koehler, Echin. 84 
Ophiomidas, Koehler, Echin. 85 
Ophiomoeris, Koehler, Echin. 85 
Ophiomytis, Koehler, Echin. 85 
Ophiononeura, Cameron, Ins. 222 
Ophiopallas, Koehler, Echin. 85 
Ophrygonius, Zang, Ins. 149 
Ophthalmotilapia, Pellegrin, Pisces 
35 
Opisthoctenodon, Broom, Rept. 33 
Opisthodisciis, Cohn, Verm. 49 
Orbignyella, Ulrich and Bassler, 
Bry. 12 
Oreohelix, Pilshry, Moll. 66 
Oreonoma, Warren, Ins. 281 
Oreophoetes, Rehn, Ins. 356 
Oreo valgus, Kolhe, Ins. 158 
Oria, Distant, Ins. 331 
Origenes, Marshall, Ins. 179 
Orinella, Dall and Bartsch, Moll. 
83 
Ornicholax, Carriker, Ins. 345 
Ornithissus, Fowler, Ins. 333 
Oroacrodon, Ameghino, Mamm, 49 
Orthoarthrus, Ameghino, Mamm. 50 
Orthochalcis, Kieffer, Ins, 230 
Orthonecroscia, Kirhy, Ins. 356 
Orthopodomyia, Theobald, Ins. 301 
Orthoptila, Meyrick, Ins. 295 
Orthosurcula, Casey, Moll. 75 
1904. [Vol. xli.] 
F 13 
