10 
INDEX TO NEW GENERA AND SUBGENERA. 
Mysidion, Hansen , Crust. 36 
Mysmenopsis, Simon , Arachn. 40 
Mystriosuchus, Fraas , Rept. 27 
Myxocystis, Mrdzek , Prot. 19 
Nanaster, Perrier , Echin. 90 
Nanno, Clarice , Moll. 50 
Nanorrhacus, Myr. 14 
Nantesia, Kirby , Ins. 220 
Nassopsidia, Martens , Moll. 63 
Nastocerus, Fairmaire , Ins. 152 
Natalia, Godwin- Austen, Moll. 65 
Neaenus, Fowler , Ins. 275 
Neagathia, IFarrew, Ins. 234 
Neaporia, Gorham , Ins. 162 
Neladius, Casey, Ins. 105 
Nelsonia, Merriam, Mamm. 29 
Neneba, Be Vis, Aves 48 
Neoatractosoma, Silvestri, Myr. 11 
Neochorista, Warren, Ins. 234 
Neoctenus, Simon, Arachn. 31 
Neodora, IFarrew, Ins. 234 
Neodrepta, Turner, Ins. 253 
Neoreta, Warren, Ins. 211 
Neoscelis, Schoch , Ins. 120 
Neotrachydesmus, Silvestri, Myr. 15 
Nephelina, Kirby, Ins. 220 
Neromia, Staudingei\ Ins. 234 
Nesaeoearabus, Bedel, Ins. 97 
Nesalcis, Warren, Ins. 234 
Nesarpalus, Bedel, Ins. 97 
Netrosoma, Scudder, Ins. 299 
Neurotoca, Warren, Ins. 234 
Neurotoma, Konow, Ins. 188 
Nidara, Mabille, Ins. 211 
Nitelopsis, Ashmead, Ins. 170 
Noctophus, Casey, Ins. 105 
Noeryma, Ashmead, Ins. 180 
Noetlingia, Lambert, Echin. 76 
Notaspidium, Balia Torre, Ins. 184 
Nothabraxas, Warren, Ins. 235 
Nothapalus, Martens, Moll. 56 
Notodryas, Meyrick, Ins. 253 
Notomenia, Tldele, Moll. 77 
Notommata, Stokes, Verm. 49 
Notopithecus, Ameghino, Mamm. 23 
Notostylops, Ameghino, Mamm. 33 
Nucterocephalus, Besbrochers, Ins. 
143 
Nudifrons, Staudinger, Ins. 220 
Nummocalcar, Cossmann, Moll. 63 
Nyctibadistes, Warren, Ins. 235 
Nymphopsis, Reuter , Ins. 194 
Oberthuria, Leech, Ins. 212 
Ochodontus, Besbrochers, Ins. 143 
Odontella, Schaffer , Ins. 290 
Odontoceras, Steuer, Moll. 49 
Odontoplia, Fairmaire, Ins. 116 
Odontoptila, Warren, Ins. 235 
Odontothyrea, Schoch, Ins. 120 
(Ecia, Walsingham, Ins. 253 
(Edaleonotus, Scudder, Ins. 299 
(Ediplura, Ortmann, Crust. 23 
(Edipo valgus, Kolbe, Ins. 120 
(Enoptila, Warren, Ins. 235 
CEnothalia, Warren, Ins. 235 
CErane, Elwes and Edwards, Ins. 
201 
Olbiosyrphus, Mik, Ins. 261 
Olemira, Banks, Ins. 283 
Oligusa, Wasmann, Ins. 100 
Oliophthalmus, Pocock, Arachn. 33 
Ommatopteryx, Kirby, Ins. 245 
Omogymna, Martens, Moll. 61 
Omospira, Ulrich, Moll. 70 
Omphaloptera, Llampson, Ins. 245 
Oncodopus, Brongniart, Ins. 297 
Onomeris, Cook, Myr. 9 
Onychostylus, Bolivar, Ins. 292 
Onychotarsus, Schoch, Ins. 120 
Oocassida, Weise, Ins. 159 
Oophthora, Aurivillius , Ins. 184 
Oospila, Warren, Ins. 235 
Opas, Cambridge, Arachn. 26 
Ophidiocephalus, Lucas and Frost, 
Rept. 18 
Ophiletina, Ulrich and Scofield , 
Moll. 63 
Ophiorrhinus, Bouglas-Ogilby, Pis- 
ces 21 
Ophiotrema, Koehler, Echin. 98 
Ophiotriton, Boederlein, Echin. 98 
Ophiotypa, Koehler, Echin. 98 
Ophrydesmus, Cook, Myr. 15 
Ophrynopus, Konow, Ins. 186 
Opisthodon, Canestrini, Arachn. 48 
Opresus, Casey , Ins. 105 
Orchestomerus, Bietz, Ins. 144 
Orchiomys, Ameghino, Mamm. 30 
Orcus, Needham, Ins. 288 
Oreophis, Hughs , Rept. 23 
Oreospiza, Be Vis, Aves 45 
Oreotrogus, Kolbe, Ins. 116 
Oribatula, Berlese, Arachn. 48 
Origes, Simon, Arachn. 33 
Ormastralium, Sacco, Moll. 69 
Ortalistes, Gorham, Ins. 162 
Orthobula, Simon, Arachn. 29 
Orthocyphus, Arnaud, Echin. 77 
Orthoderella, Giglio-Tos , Ins. 293 
Orthoporus, Silvestri, Myr. 18 
Orthoyoldia, Verrill and Bush, Moll. 
77 
