truncus arteriosus, ii, 6 
trunkfishes, i, 16, 19, 206, 
373) 375, 378, 429; il, 
415-417 
Index 
upland fishes, i, 311 
Uranidea, ii, 443, 445 
figure of, ii, 445 
Uranoplosus, ii, 22 
figure of, 1, 373, 376, 377~| Uranoscopus, i, 259, 260, 
horned, ii, 41 
hornless, ii, 419 
spineless, li, 417 
spotted, ii, 416 
Trypauchen, ii, 467 
tschawytscha, ii, 73 
Tschudi, i, 415 
tsuzume, ii, 402 
tullibee, ii, 67 
tunicates, i, 460, 462, 467-481 
adult, figured, i, 480 
anatomy, figured, i, 472 
Kingsley on, i, 467, 468, 
469 
larva, figured, i, 471 
Ritter on, i, 474 
tunny, i, 19, 210 
great, ii, 262 
turbots, i, 206, 328; ii, 488, 
489 
tribe, the, ii, 487 
Turner, 
on Dallia, ii, 207 
Turton, i, 410 
Tutuila Island, 
lizard skipper from, i, 230 
Twin Lakes, 
trout of, i, 241 
Two-Ocean Pass, i, 307, 308, 
309, 310 
Evermann on, i, 307 
tyee, li, 69 
Tylosurus, i, 128 
figure of, ii, 210 
shoulder-girdle of, i, 59 
Typhlichthys, i, 220, 314; 
ii, 201, 202 
figure of, i, 116; ii, 202 
Typhlogobius, i, 198; ii, 467 
Typodus, ii, 222 
uku, i, 325; ii, 338 
Ulema, i, 271 
ulchen, ii, 124 
figure of, i, 320; ii, 124 
Umbra, i, 253; li, 35 
figure of, ii, 193 
Umbride, i, 290; ii, 193, 194 
Umbrina, ii, 356, 357 
figure of, ii, 357 
umiuma, i, 429 
uncertain conclusions, i, 79 
Undina, i, 204, 605 
unicorn-fish, ii, 409, 415 
U.S. Fish Commission, ii, 69 
Upeneus, ii, 353 
Upham, 
on glacial effects, i, 275 
393; li, 361, 364, 503, 
504 
Uranoscopide, ii, 503, 504, 
506, 525 
Urenchelyide, ii, 142 
Urenchelys, ii, 142 
ureters, ii, 6 
Urochordata, i, 460 
Urodela, i, 76 
Urolophus, i, 555-557 
Uronemide, i, 612 
Uronemus, i, 612 
Urophycis, i, 187; ii, 538 
Uropterygius, ii, 153 
urosome, i, 84, 85 
Urosphen, ii, 234 
Urosphenide, ii, 234 
urostyle, i, 84 
Usinosita, ii, 498 
uu, i, 162 
vaca, i, 235; li, 327 
Vahl, i, 396 
Vaillant, 1, 412 
portrait of, i, 413 
Valenciennellus, ii, 134 
Valenciennes, i, 401, 404 
Valenciennesia, ii, 460 
Valentyn, i, 396 
Valisneri, ii, 144 
Valisneria, ii, 144 
Van Dyke, ii, 93 
on Ouananiche, ii, 93 
vaqueta de dos colores, li, 404 
variability of instinct, 
Whitman on, i, 156 
variation in colors, 1, 235 
variation in fin-rays, i, 211 
Variola, ii, 327 
vasa efferentia, ii, 6 
vas deferens, i, 28 
Velifer, ii, 286 
Vellitor, i, 260; ii, 448 
vendace, ii, 67 
venomous spines, 
of catfish, i, 179 
of scorpion-fish, i, 180 
ventral fins, i, 10 
Venustodus, i, 531 
Verasper, ii, 492 
ver blanc, i, 351 
Verilus, ii, 338 
vertebre, i, 203, 205 
vertebre in fishes, i, 212 
Boulenger on, i, 213 
figure of, i, 510 
vertebral column, i, 46-48 
figure of, i, 48 
5o7 
vertebral column, 
of lancelet, i, 55 
of Roccus, i, 48 
verrugato, ii, 356 
vessels engaged in fish-collect- 
ing, 1, 408, 410 
villiform teeth, i, 29 
Vinciguerra, i, 408 
portrait of, i, 413 
Vinciguerria, ii, 134 
Vinson, 
on Gourami, ii, 369 
Violante, the, i, 408; ii, 60 
viper-fish, ii, 129 
Vireosa, ii, 460, 
figure of, ii, 461 
viscera of fish, i, 26, 28 
viviparous fishes, 
figure of, i, 125, 126, 222; 
ii, 200 
viviparous perch 
figure of, ii, 379 
voices of fishes, i, 121 
Vogmar, ii, 477 
Vogt, i, 428 
Volador, ii, 458 
Vomer, ii, 276 
vomer, i, 6 
Vomeropsis, ii, 278 
wachna cod, ii, 537 
Wagner, i, 427 
Waha Lake, ii, 104 
Waite, i, 408, 416 
portrait of, i, 409 
Walbaum, i, 397; li, 68 
Walcott, i, 428, 603 
on fossil chimzroids, i, 565 
on oldest forms, i, 435 
walking-fish, i, 167 
wall-eye, ii, 307 
wall-eyed surf-fish, ii, 375 
Walton, i, 336, 337 
Ward, 
on parasitic diseases, i, 
343) 344 
Wardichthys, ii, 15 
water-beetle, ii, 144 
water-pig, ii, 369 
watersheds, i, 305 
the Cassiquiare, i, 307 
how fishes cross, i, 306 
the Suletind, i, 306 
swampy, i, 314 
Two-Ocean Pass, i, 307 
weakfish, ii, 353 
Weber, i, 428 
on swim-bladder, i, 96 
Weberian apparatus, i, 93, 
96, 97; i, 160 
figure of, i, 93; ii, 160 
weevers, ii, 500 
Gill on, i, 500 
