416 



Index. 



Mylophus schomburgki, 271 

 Mylosoma, 261 



albiscopus, 265. 266 



aureus, 265 



ocellatum, 235, 265 



Nannagraecia, 378 

 Nannostomatinae, 98 

 Nannostomus marginatus, 99 

 Nannotettix, 342 



guentheri, 359 



longipes, 341 



steinbachi, 359 

 Nastonotus, 341 

 nattereri, Pygocentrus, 242 



Rooseveltiella, 227, 23-, 233, 239, 

 240, 241, 242 



Serrasalmo, 240, 242 

 Neanias, 399 



? americanus, 401 

 necessarius, Neoconocephalus, 395 

 nemoptera, Phlugis, 364, 367 

 nemoralis, Conocephalus, 372, 375 

 Neoborus, 96 

 Neoconocephalus, 381, 390, 391 



chapadensis, 395 



crassus, 392 



elongatus, 392 



giganticus, 394 



gladiator, 394 



heteropus, 394 



infuscatus, 394 



irroratus, 393 



longicauda, 393 



longifossor, 396 



macropterus, 395 



maxillosus, 393 



mexicanus, 393 



muticus, 393 



necessarius, 395 



nietoi, 394 



nigropunctatus, 392 



nigrosignatus, 392 



redtenbacheri, 393 

 Neortus, 399 

 Nephroma Isevigatum, 123 



var. parile, 123 

 Nephromopsis ciliaris, 121 

 neptunia, Homeosaurus, 89, 90, 91 

 Nesa?cia, 340 

 neumanni, Epimys, 18 

 Neuropteris, 125 



clarksoni, 127 



fasciculata, 126 



fimbriata, 127 



liirsuta, 127 



var. angustifolia, 127 



missouriensis, 126, 127 



scheuchzeri, 127 



Neuropteris tenuifolia, 127 

 nietoi, Neoconocephalus, 394 

 niger, Pygocentrus, 241 



Rooseveltiella, 240, 241 



Serrasalmo, 241 

 nigra, Scaphura, 314 

 nigricans, Pygocentrus, 239, 240 



Serrasalmo, 239 

 nigricaudum, Leurophyllum, 350, 351 

 nigrifrons, Eriolus, 387 

 nigripinnis, Colosoma, 263 



Myletes, 262 



Piaractus, 262, 263 

 nigrispinis, Liparoscelis, 356 

 nigriventris, Platyphyllum, 352 

 nigrolineata, Theudoria, 291 

 nigrolineatus, Orophus, 333 

 nigropunctatus, Neoconocephalus, 392 

 nigrosignatus, Neoconocephalus, 392 

 nigro-spinosus, Diophanes, 360 



Eschatoceras, 278 

 nigrotaeniatus, Leporinus, 95, 98 

 nilotica, Tilapia, 97 

 niloticus, Arvicanthis, 21 

 nitida, Bothriolepis, 280 

 nodulosa, Anaulacomera, 319 

 notata, Anisitsia, 95 

 notatus, Pygocentrus, 243 



Rooseveltiella, 240, 241 



Serrasalmo, 242 

 nubilans, Arvicanthis abyssinicus, 20, 



23. 25 

 nyama, Tatera nigricauda, 14, 15, 17 



oberthuri, Caulopsis, 390, 391 



obliqua, Licodia, 403 



obscura var. cndophoenicea, Physcia, 



121 

 obscuratum, Rhizocarpon, 124 

 obscuripenne, Enthephippion, 306 

 ocellatum, Mylosoma, 235, 265 

 ocellatus, Poecilobrycon, 98, 99 

 ocellifer, Hemigrammus, 105 

 ochraceus, Meroncidius, 354 

 odoe, Sarcodaces, 113 

 Odontoxiphidion, 370 

 Odonturella, 286 

 CEdipomidas, 81 

 oligolepis, Mcenkhausia, 106 

 olivacea, Parmelia, 122 

 olivaceus, Ligocatinus, 290 

 opacus, Diplophyllus, 331 

 orbicularis, Fowleriana, 109 

 Orchelimum, 370 

 orestes, Otomys, 10, 11 

 Orophus, 296 



angustatus, 332 



colosseus, 333 



erosus, 333 



