INDEX TO NEW GENERA AND SUBGENERA. 
11 
Ophiopristis, Verrill, Ech. 81 
Opliioscalus, Verrill, Ech. 81 
Ophiotreta, Verrill, Ech. 82 
Opisthioglyphe, Looss, Verm. 42 
Opisthopatus, Purcell, Myr. 17 
Opisthoporodesmus, Silvestri, Myr. 
13 
Oralien, Smith, Crust. 32 
Orcagnia, Oppenheim, Moll. 55 
Oreocalamus, Boulenger, Kept. 22 
Oreogenes, Stichel, Ins. 191 
Oreogobius, Smitt, Pisces 24 
Oreoxenia, Foerster, Ins. 265 
Orneates, Jacoby, Ins. 159 
Ornosia, Grouvelle, Ins. 110 
Orphnoda, Weise, Ins. 159 
Ortliocyclops, Forbes, Crust. 32 
Orthomycterus, Faust, Ins. 147 
Orthoxiphus, Saussure, Ins. 271 
Oryzaephilus, Ganglbauer, Ins. 113 
Ostlingoceras, Hyatt, Moll. 58 
Ostophycephalus, Ogilby, Pisces 30 
Otosciurus, Nelson, Mamm. 29 
Ourococcus, Fuller, Ins. 258 
Oxysenodon, Wortman, Mamm. 28 
Oxybeloceras, Hyatt, Moll. 58 
Oxymelus, Faust, Ins. 148 
Oxynema, Mnstow, Verm. 46 
Oxystigmatium, Kraatz, Ins. 130 
Ozodania, Dyar, Ins. 206 
Pachyurus, Philippi, Kept. 22 
Paganettia, Ganglbauer, Ins. Ill 
Palceoerioptera, Meunier, Ins. 95 
Paleeogoniatites, Hyatt, Moll. 58 
Pal se ogonomyia, Meunier, Ins. 95 
Palseomyopa, Meunier, Ins. 95 
Palseopcecilostola, Meunier, Ins. 95 
Palseoporites, Kidr, Ccel. 23 
Palanda, Moore, Ins. 194 
Palystodes, Pocock, Arachn. 21 
Pampsilota, Konow, Ins. 186 
Pan, Richmond, Axes 53 
Pandalina, Caiman, Crust. 20 
Pandassana, Moore, Ins. 194 
Paneryma, Wulp, Ins. 240 
Panoptidius, Faust, Ins. 148 
Panteliella, Kiefer, Ins. 185 
Papaipema, Smith, Ins. 212 
Papillicardium, Sacco, Moll. 82 
Paracalliope, Stebbing, Crust. 26 
Paracandona, Hartwig, Crust. 34 
Paracantlia, Coquillett, Ins. 240 
Paracelia, Bedel, Ins. 99 
Paraceratites, Hyatt, Moll. 58 
Paraclialcides, Boulenger , Kept. 19 
Paracorophium, Stebbing, Crust. 26 
Paractinoceras, Hyatt, Moll. 60 
Paracyproidea, Stebbing, Crust. 26 
Paradexamine, Stebbing, Crust. 26 
Paradownesia, Gestro, Ins. 160 
Paradoxocerus, Kraatz, Ins. 130 
Parafairmairia, Cockerell, Ins. 258 
Paragaleodes, Kraepelin, Arachn. 24 
Paragonimus, Looss, Verm. 42 
Paragonocnemis, Kraatz, Ins. 134 
Paragymnites, Hyatt, Moll. 58 
Parahalictoides, Cockerell and Porter, 
Ins. 170 
Parahoplites, Anthula, Moll. 58 
Parahybos, Kertesz, Ins. 235 
Parahypostena, Strobl, Ins. 238 
Paraikichthys, Ameghino, Pisces 39 
Parailia, Boulenger, Pisces 30 
Parailurus, Schlosser, Mamm. 28 
Paralenticeras, Hyatt, Moll. 58 
Paralepida, Dali, Moll. 84 
Paraleptamphopus, Stebbing, Crust. 
26 
Paraleucothoe, Stebbing, Crust. 26 
Paramastax, Burr, Ins. 275 
Paramblythyreus, Bianchi, Ins. 245 
Paramesostoma, Attems, Verm. 34 
Paransemia, Casey, Ins. 163 
Parandania, Stebbing, Crust. 26 
Paraneptunides, Kraatz, Ins. 122 
Parantheoides, Carlgren, Coel. 18 
Parapacliydiscus, Hyatt, Moll. 58 
Paraphsedusa, Boettger, Moll. 68 
Paraphago, Boulenger, Pisces 33 
Paraphloeus, Sharp, Ins. 113 
Paraphyllites, Hyatt, Moll. 58 
Parapsiloceras, Hyatt, Moll. 58 
Pararhabdotis, Kraatz, Ins. 122 
Parastephanites, Hyatt, Moll. 58 
Parathericles, Burr, Ins. 275 
Paratornoceras, Hyatt, Moll. 58 
Paratrachichthys, Waite, Pisces 20 
Paratryphosites, Stebbing, Crust. 26 
Parazodesmus, Pocock, Myr. 13 
Parerigone, Brauer, Ins. 238 
Parhipinia, Stebbing, Crust. 26 
Parienia, Berg, Ins. 228 
Parilimya, Melvill and Standen, 
Moll. 82 
Parmunculus, Collinge, Moll. 63 
Paropisa, Stebbing, Crust. 27 
Paropomala, Scudder, Ins. 275 
Pasiglyptus, Berg , Ins. 106 
Pattonia, Peach, Myr. 16 
Paulistanus, Gounelle, Ins. 153 
Paurocope, Brady, Crust. 32 
Pauropsylla, Riibsaamen, Ins. 253 
Pectinatarca, Sacco, Moll. 86 
Peloriadapis, Grandidier, Mamm. 24 
