INDEX 



513 



Mormyrus, 389, 390 ; M. 

 oxyrhynchus, 388/. 



Morone, 431 



Motella, 482 



mouth, 18, 67 



Moxostoma, 375 



mucous glands, 50 



Mugil, 356, 420 ; M. 

 cephalus, 420,/'. 



Mugilidae, 420 



Mugiliformes, 419 



Mullidae, 429 



Mulloides, 429 



MuUus, 429 



Mvracna, 408 ; M. picta, 

 408/. 



Muraenidae, 408 



Muraenolepidae, 483 



Mwaenolepis, 352, 479, 

 483 



muscles, 3 ; of eye, 5 ; 

 epibranchial, 6 ; hypo- 

 branchial, 5 ; trapezius, ti 



Mustelus, 94/., 134, 151 . 

 M. antarcticus, 111 /., 

 115/ ; M. laevis, 20 /'., 

 68/ 



myelencephalon, 13 



Myliobatidae, 165 



Myliobatinae, 165 



Myliobatis, 128, 166 ; M. 

 aquila, 166/ 



Mylostoma, 263 ; M. vari- 

 abilis, 264 / 



Mylostoniidae, 263 



myodome, 326 



myotome, 2 



Myriacanthidae, 176 



Myriacanthus, 172, 176. 

 177/., 178/, 180 



Myriolepis, 311 



Myripristis, 427 



Myroconger, 408 



Myrus, 405 



Myxine, 35, 42 /., 46, 

 48 /., 51, 133 / ; M. 

 glutinosa, 33 /., 35 /., 

 44/, 47/, 50/ 



Myxinidae, 51 



Myxinoidea, 46 



Myants, 420 



Naudidae, 445 

 Nandus, 445 

 Nannoglanis, 382 

 Narcine, 161, 163 

 Nasevs, 436 

 Naucrates, 464 ; N. duetor 



353 /. 

 Nealotus, 466 



Nectwrus, 11 



Xedy stoma , 382 

 Neencheli, 405 

 Nematonotus, 399 

 Nematoptychiiis, 310 

 Nemichthyidae, 406 

 Nemichtkys, 406 

 Nemopt&ryx, 482 

 Neohonts, 375 

 Neobythites, 459 

 Xeoceratodus, 258 

 Neochanna, 398 

 Neopercis, 456 

 Neorhom bolepis, 331 

 Neosilurus, 380 

 ixephridia, 27 

 Nerophis, 415 

 nerve-components, 19, 22 



/ ; acustico-lateral, 19 ; 



general cutaneous, 21 ; 



general splanchnic, 21 ; 



somatic motor, 21 ; 



splanchnic motor, 21 ; 



splanchnic sensory, 21 

 nerve-roots, 2, 4 

 nerve supply, 78 / 

 Nettastoma, 405 

 nictitating membrane, 151 

 Nomeus, 421 

 Nostril, median, 39 ; paired, 



82 

 nostrils of Elasmobranchs, 



125 ; of "Dipnoi, 241 ; 



of Osteichthyes, 227 

 Notacanthidae, 418 

 Notacanthiformes, 416 

 Notacanthus, 418 ; N. 



analis, 418/ 

 Notagogus, 336 

 Xotelojis, 387 

 Notidani, 139 

 Notidanidae, 143 

 Notidanus, 140, 142/, 143 ; 



N. cinereus, 76 / 

 notochord, 1, 68, 97 

 notochordal sheaths, 31, 



97, 273 

 Notoglanis, 382 

 Notogoneus, 395 

 Notopteridae, 389 

 Notopterus, 390 ; N. Jeapi- 



rat, 389/ 

 Xotothenia, 456 

 Nototheniidae, 456 

 JYovacula, 447 



occipital region, 11 

 occipito-spinal nerves, 12 

 Odax, 447 

 Odaxothrissa, 393 



Odontasjns, 150 

 Odontostomus, 399 

 Oenoscoptts, 337 

 Ogcocephalus, 462 ; O. ves- 



pertilio, 461 /. 

 olfactory organ, 23 

 Oligopleuridae, 337 

 Olignpleurus, 337 

 Oncobatis, 161 

 Onirodes, 462 ; 0. glome- 



rosus, 462 / 

 Onychodontidae, 286 

 Onychodus, 286 

 operculum, 169, 223 

 Ophichthys, 405 

 Ophidiidae, 460 

 Ophidium, 460 

 Ophiocephalidae, 422 

 Ophiocephalns, 422 ; 0. 



striatus, 421/, 422/ 

 Ophiodon, 453 

 Ophiopsis, 336 

 Opistkocentrus, 458 

 0}risthognathvs, 431 

 Opisthomi, 477 

 Opisthomyzon, 449 

 Opisthojrroctvs, 394 ; 0. 



soleatus, 406 / 

 Opsauus, 460 

 OracantMts, 192, 193 

 Orectolobinae, 149 

 Orectolobus, 149 

 Or est las, 401 



organs, urinogenital, 84 / 

 Orodus, 146, 147 

 Orthacanthus, 183/ 

 Orthacodus, 150 

 Orthagoriscus, 441 

 Osmeroides, 387 

 Osmerus, 365, 367, 369, 



394 

 Osphromenidae, 422 

 Osphromenus, 422 ; 0. 



o#oa;, 423/ 

 Ostariophysi, 371 

 Osteichthyes, 210 

 Osteoglossidae, 390 

 Osteoglossum, 363, 390 

 Osteolepida, 280 

 Osteolepidae, 285 

 Osteolepidoti, 280 

 Osteolepis, 280, 299 ; O. 



macrolepidotus, 283 / 

 Osteorhachis, 331 ; 0. leedsi, 



329/ 

 Osteostraci, 200 

 Ostracion, 117, 439 

 Ostraciontidae, 439 

 Ostracodermi, 194, 437 

 otic process, 97, 139, 144 

 otoliths, 298, 324 



33 



