732 
john-paw, 5 39* 
Johnson, on interbreeding of 
salmon, 317 
jolt-head porgy, 559* 
Jordanella, 416* 
Jordania, 653* 
jorobado, 491 
joturo, 437* 
Joturus, 437* 
jugular-fishes, 709 
Jugulares, 709-716 
jurel, 491 
Kamchatka lamprey, 176* 
Kamloops trout, 324 
kelp-blenny, 718* 
Kerr, on Lepidosiren, 243 
kettleman, 749 
killifishes, 413 
king of the mackerel, 636* 
king of salmon, 688* 
kingfish, 570, 571* 
king-salmon, 294* 
Kirtlandia, 434* 
kisugo, 572 
klipvisch, 730 
Kneriide, 422 
Kochi, 652 
Kuhliide, 519 
kumu, 566 
Kyphoside, 563 
Labridz, 596 
Labyrinthici, 579-590 
labyrinthine fishes, gill in, 579 
Lachnolaimus, 598* 
Lactariide, 572 
Lactophrys, 31*, 627, 628%, 
629* 
face view of, 628* 
skeleton of, 629* 
ladyfish, 271* 
transformation of, 37* 
Lagocephalus, 630* 
lake herring, 289 
Lake Tahoe, trout of, 327 
lake sturgeon, 256* : 
Lamna, tecth of, 194* 
Lamnide, family of, 194 
Lamnoid sharks, 190 
Lampetra, 172, 176* 
Lampridide, 458 
lampreys, 70, 167-178 
ascending brook, 175* 
breeding habits of, 178 
catfishes destroyed by, 177* 
of Cayuga Lake, 174-178 
defined, 170 
fod of, 171 
gill-basket of, 166* 
Kamchatka, 176* 
larval, 172* 
metamorphosis of, 171 
Index 
lampreys, 
mischief by, 173 
of Oregon, 175* 
running of, 174 
structure of, 167 
Surface on, 172 
Lampris, 132* 
shoulder-girdle of, 458* 
lancelet, 163 
California, 165* 
habits of, 164 
origin of, 165 
species of, 164 
lancet of surgeon-fish, 53 
lancet-fishes, 357, 358*, 619 
lane-snapper, 550* 
lantern-fishes, 352, 356* 
large-mouthed black _ bass, 
519, 520% 
larva 
of common eel, 367* 
of conger-eel, 369* 
of eel, 366 
of Lepidosiren, 244* 
larval flounder, 77*, 693* 
lateral line, 8, 20 
Dean on, 21 
function of, 21 
Latilide, 575 
Latridide, 577 
laws of distribution, 91 
lawyer, 743 
le monstre marin, 150*, 151* 
least darter, 530 
Lendenfeld, on luminous or- 
gans, 61 
length of intestine, 31 
leopard-toadfish, 735* 
Lepidaplois, 600* 
Lepidosiren, adult male of, 
242% 
embryo of, 243* 
Kerr on, 243 
larva of, 244* 
Lepidosirenide, 242 
Lepidostei, order of, 259 
Lepisosteide, family of, 259 
Lepisosteus, 261* 
Lepomis, 2*, 3%, 515* 
Leptecheneis, 69*, 679* 
Leptocardii, 163-166 
Leptocephalus, larva of, 369* 
Leptolepide, 268 
Leptolepis, 268* 
Leptoscopide, 713 
Leuciscus, 388* 
_ pharyngeal bones of, 382* 
ling, 743 
lion-fish, 646* 
Florida, 644* 
Liopsetta, 704* 
liparid, 665* 
Liparidide, 665 
little-head porgy, 559 
littoral fishes, 101 
distribution of, 100 
T.iuranus, 86* 
lizard-fishes, 353* 
lizard-skipper, 83*, 719* 
loaches, 394 
Lobotes, 545 
Lobotide, 545 
local barriers, 107 
Lockington, on long-jawed 
goby, 673 
log-perch, 526 
long-eared sunfish, 1, 2*, 3%, 
515* 
long-fin albacore, 478* 
long-jawed goby, 673, 674* 
Lockington on, 673 
long-necked eels, 372 
Lophiide, 748 
Lophius, 16*, 749* 
Lophobranchii, 442-455 
Lopholotilus, 575 
Lophopsetta, 697* 
Lophotidir, 506 
Lord, on nest-building of 
sticklebacks, 445 
Loricaria, 405* 
Loricariidz, 404 
Lota, 744* 
louse-fish, 680 
louvar, 505* 
lower jaw 
of Heterodontus, 187* 
of Neoceratodus, 242* 
of Polypterus, 232* 
lower pharyngeals 
of parrot-fish, 604 
of Placopharynx, 390* 
lowland fishes, 122 
Luciocephalide, 584 
luminous organs, 59, 60%, 61, 
62, 64% 
lumpfish, 665* 
lump-suckers, 664 
lungfishes, 235-245 
Lutianide, 547 
Lutianus, 140%*, 548*, 550* 
Luvaridz, 506 
Luvarus, 505* 
Lycenchelys, 729* 
Lycodapus, 730* 
Lycodes, 729* 
Lyomeri, order of, 374 
Lyopomi, order of, 361 
Lysopteri, order of, 249 
Mackenzie River saimon, 291 
mackerel, 141* 
Atka, 650 
frigate, 477 
Goode on, 475 
king of, 636* 
