ALPHABETICAL INDEX. 



4-10 



nematophorus (Platysta- 



cus), 270. 

 Nematopoma, 287. 

 -nematurus (Chalcinus), 



340. 

 nemurus (Bagrus), 80. 

 neniurus (Hernibagrus), 



80. 

 nemurus (Macrones), 80. 

 Neoscopelus, 404. 

 Netuma, 138. 

 netuma (Bagrus), 140. 

 nicaraguensis (Pimelo- 



dus), 125. 

 nieuhofii (Clarias), 20. 

 niger (Astronestlies), 425. 

 niger (Chiasmodus), 435. 

 niger (Doras), 209. 

 niger (Malacosteus), 428. 

 niger (Oxydoras), 209. 

 niger (Pygocentrus), 369. 

 niger (Rhinodoras), 209. 

 niger (Serrasalmo), 369. 

 nigra (Astronesthes), 425. 

 nigrescens (Pimelodus), 



100. 

 nigricans (Amiurus), 100. 

 nigricans (Arius), 138. 

 nigricans (Chaetostomus), 



246. 

 nigricans (Hypostomus), 



246. 

 nigricans (Pacu), 295. 

 nigricans (Pimelodus), 



100. 

 nigricans (Prochilodus), 



295. 

 nigricans (Pygocentrus), 



368. 

 nigricans (Serrasalmo), 



368. 

 nigricans (Trichomycte- 



rus), 274. 

 nigriceps (Bagrus), 77. 

 nigriceps (Macrones), 77. 

 nigrita (Bagrus), 72. 

 nigritus (Synodontis), 



214. 

 nigrodigitatus (Chrysich- 



thys), 73, 430. 

 nigi'odigitatus (Melano- 



dactylus), 73. 

 nigrodigitatus (Pimelo- 

 dus), 73. 

 nigro-punctatus (Bagrus), 



112. 

 nigro-t«>niatus(Clialceus), 



309. 

 nigro-tseniatus (Lepori- 



nus), 309. 

 niloticus(Characinus),312. 

 VOL. T. 



niloticus (Coregomis), 



379. 

 niloticus (Distichodus), 



360. 

 niloticus (Eutropius), 52. 

 niloticus (Hypophthal- 



mus), 52. 

 niloticus (Mochocus), 217. 

 niloticus (Sahno), 312, 



313, 360. 

 niloticus (Schilbe), 51. 

 niloticus (Silurus), 51. 

 niveatus (Chaetostomus), 



243. 

 niveatus (Hypostomus), 



243. 

 nodosus (Arius), 194. 

 nodosus (Auchenipterus), 



194. 

 nodosus (Silurus), 194. 

 notatus (Anoclus), 298. 

 notatus (Hemiodus), 298. 

 notatus (Pimelodus), 98, 



131. 

 notatus (Scopelus), 414. 

 Notoglanis, 136. 

 Notoscopelus, 405. 

 Noturus, 104. 

 novem-fasciatus (Lepori- 



nus), 308. 

 nuchalis ( iElurichthys), 



179. 

 nuchalis (Arius), 171. 

 nuchalis (Auchenipterus), 



193. 

 nuchalis (Euanemus), 193. 

 nuchalis (Hypophthal- 



mus), 193. 

 nudiceps (ChaBtostomus), 



249. 

 nudiceps (Hypostomus), 



249. 

 nudirostris (Loricaria), 



259. 

 nudiventris (Loricaria), 



256. 

 nurse (Alestes), 314. 

 nurse (Brachyalestes), 



314. 

 nurse (MyletesJ, 314. 

 Nyctophus, 404. 



obesus (Amiurus), 99. 

 obscurus (Auchenipterus), 



195. 

 obscurus (Copidoglanis), 



26. 

 obtusidens (Curimatus), 



306. 

 obtusidens (Leporinus). 



306. 



obtusirostris (Eutropius\ 



53. 



occidentalis (Noturus). 



105. 

 occidentalis (Pimelodus), 



137. 

 ocellatum (Xipliostoma), 



357. 

 ocellatus (Silurus), 167. 

 Octonematichthys, 70. 

 ocvdatus (Bagrus), 75. 

 odoe, 352. 

 Odontostomus, 417. 

 olfersii (Argyropelecus), 



386. 

 olfersii (Sternoptyx), 386. 

 oligacanthus (Myletes), 



378. 

 oligacanthus (Myleus\ 



378. 

 oligolepis (Prochilodus), 



295. 

 oligolepis (Tetragonopte- 



rus), 327. 

 Oligosarcus, 353. 

 oligospilus (Chaetosto- 



mus), 244. 

 oli vaceus(Pimelodus), 1 02 

 olivaris (Hopladelus), 



104. 

 Olyra, 97, 98. 

 omias (Synodontis), 213. 

 Ompok, 45. 

 oncina (Arius), 194. 

 opalinus (Brycon), 384. 

 opalinus (Chalceus), 334. 

 ophiodon (Saurus), 402. 

 Opisthopterffi (Siluridaa), 



271. 

 Opladelus, 103. 

 orbicidaris (Tetragono- 



pterus), 320. 

 orbignianum (Platysto- 



ma), 107. 

 orbignyanus (Chalceus), 



333. 

 orbignyanus (Myletes), 



375. 

 orbignyanus (Salminus), 



350. 

 orbignyanus (Tetragono- 



pterus), 317. 

 orbignyi (Rhinodoras), 



209. 

 ornatus (Pimelodus), 116. 

 orontis (Clarias), 15. 

 orthotamia (Brycon), 335. 

 oseryi (Xiphostoma), 357 

 Osteogeniosus, 181. 

 Oued denne, 55. 

 Oxvdoras. 206, 209. 

 2 H 



